truffle: src/share/vm/opto/macro.cpp annotate

annotate src/share/vm/opto/macro.cpp @ 601:523ded093c31

6809798: SafePointScalarObject node placed into incorrect block during GCM Summary: Replace the control edge of a pinned node before scheduling. Reviewed-by: never

author	kvn
date	Thu, 26 Feb 2009 14:26:02 -0800
parents	49a36a80b0c7
children	98cb887364d3

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
196 d1605aabd0a1 6719955: Update copyright year xdono parents: 168 diff changeset	2 * Copyright 2005-2008 Sun Microsystems, Inc. All Rights Reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
a61af66fc99e Initial load duke parents: diff changeset	19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
a61af66fc99e Initial load duke parents: diff changeset	20 * CA 95054 USA or visit www.sun.com if you need additional information or
a61af66fc99e Initial load duke parents: diff changeset	21 * have any questions.
a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
a61af66fc99e Initial load duke parents: diff changeset	25 #include "incls/_precompiled.incl"
a61af66fc99e Initial load duke parents: diff changeset	26 #include "incls/_macro.cpp.incl"
a61af66fc99e Initial load duke parents: diff changeset	27
a61af66fc99e Initial load duke parents: diff changeset	28
a61af66fc99e Initial load duke parents: diff changeset	29 //
a61af66fc99e Initial load duke parents: diff changeset	30 // Replace any references to "oldref" in inputs to "use" with "newref".
a61af66fc99e Initial load duke parents: diff changeset	31 // Returns the number of replacements made.
a61af66fc99e Initial load duke parents: diff changeset	32 //
a61af66fc99e Initial load duke parents: diff changeset	33 int PhaseMacroExpand::replace_input(Node use, Node oldref, Node *newref) {
a61af66fc99e Initial load duke parents: diff changeset	34 int nreplacements = 0;
a61af66fc99e Initial load duke parents: diff changeset	35 uint req = use->req();
a61af66fc99e Initial load duke parents: diff changeset	36 for (uint j = 0; j < use->len(); j++) {
a61af66fc99e Initial load duke parents: diff changeset	37 Node *uin = use->in(j);
a61af66fc99e Initial load duke parents: diff changeset	38 if (uin == oldref) {
a61af66fc99e Initial load duke parents: diff changeset	39 if (j < req)
a61af66fc99e Initial load duke parents: diff changeset	40 use->set_req(j, newref);
a61af66fc99e Initial load duke parents: diff changeset	41 else
a61af66fc99e Initial load duke parents: diff changeset	42 use->set_prec(j, newref);
a61af66fc99e Initial load duke parents: diff changeset	43 nreplacements++;
a61af66fc99e Initial load duke parents: diff changeset	44 } else if (j >= req && uin == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	45 break;
a61af66fc99e Initial load duke parents: diff changeset	46 }
a61af66fc99e Initial load duke parents: diff changeset	47 }
a61af66fc99e Initial load duke parents: diff changeset	48 return nreplacements;
a61af66fc99e Initial load duke parents: diff changeset	49 }
a61af66fc99e Initial load duke parents: diff changeset	50
a61af66fc99e Initial load duke parents: diff changeset	51 void PhaseMacroExpand::copy_call_debug_info(CallNode oldcall, CallNode newcall) {
a61af66fc99e Initial load duke parents: diff changeset	52 // Copy debug information and adjust JVMState information
a61af66fc99e Initial load duke parents: diff changeset	53 uint old_dbg_start = oldcall->tf()->domain()->cnt();
a61af66fc99e Initial load duke parents: diff changeset	54 uint new_dbg_start = newcall->tf()->domain()->cnt();
a61af66fc99e Initial load duke parents: diff changeset	55 int jvms_adj = new_dbg_start - old_dbg_start;
a61af66fc99e Initial load duke parents: diff changeset	56 assert (new_dbg_start == newcall->req(), "argument count mismatch");
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	57
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	58 Dict* sosn_map = new Dict(cmpkey,hashkey);
0 a61af66fc99e Initial load duke parents: diff changeset	59 for (uint i = old_dbg_start; i < oldcall->req(); i++) {
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	60 Node* old_in = oldcall->in(i);
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	61 // Clone old SafePointScalarObjectNodes, adjusting their field contents.
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	62 if (old_in != NULL && old_in->is_SafePointScalarObject()) {
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	63 SafePointScalarObjectNode* old_sosn = old_in->as_SafePointScalarObject();
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	64 uint old_unique = C->unique();
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	65 Node* new_in = old_sosn->clone(jvms_adj, sosn_map);
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	66 if (old_unique != C->unique()) {
601 523ded093c31 6809798: SafePointScalarObject node placed into incorrect block during GCM kvn parents: 584 diff changeset	67 new_in->set_req(0, newcall->in(0)); // reset control edge
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	68 new_in = transform_later(new_in); // Register new node.
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	69 }
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	70 old_in = new_in;
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	71 }
eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	72 newcall->add_req(old_in);
0 a61af66fc99e Initial load duke parents: diff changeset	73 }
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	74
0 a61af66fc99e Initial load duke parents: diff changeset	75 newcall->set_jvms(oldcall->jvms());
a61af66fc99e Initial load duke parents: diff changeset	76 for (JVMState *jvms = newcall->jvms(); jvms != NULL; jvms = jvms->caller()) {
a61af66fc99e Initial load duke parents: diff changeset	77 jvms->set_map(newcall);
a61af66fc99e Initial load duke parents: diff changeset	78 jvms->set_locoff(jvms->locoff()+jvms_adj);
a61af66fc99e Initial load duke parents: diff changeset	79 jvms->set_stkoff(jvms->stkoff()+jvms_adj);
a61af66fc99e Initial load duke parents: diff changeset	80 jvms->set_monoff(jvms->monoff()+jvms_adj);
63 eac007780a58 6671807: (Escape Analysis) Add new ideal node to represent the state of a scalarized object at a safepoint kvn parents: 0 diff changeset	81 jvms->set_scloff(jvms->scloff()+jvms_adj);
0 a61af66fc99e Initial load duke parents: diff changeset	82 jvms->set_endoff(jvms->endoff()+jvms_adj);
a61af66fc99e Initial load duke parents: diff changeset	83 }
a61af66fc99e Initial load duke parents: diff changeset	84 }
a61af66fc99e Initial load duke parents: diff changeset	85
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	86 Node* PhaseMacroExpand::opt_bits_test(Node* ctrl, Node* region, int edge, Node* word, int mask, int bits, bool return_fast_path) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	87 Node* cmp;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	88 if (mask != 0) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	89 Node* and_node = transform_later(new (C, 3) AndXNode(word, MakeConX(mask)));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	90 cmp = transform_later(new (C, 3) CmpXNode(and_node, MakeConX(bits)));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	91 } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	92 cmp = word;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	93 }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	94 Node* bol = transform_later(new (C, 2) BoolNode(cmp, BoolTest::ne));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	95 IfNode* iff = new (C, 2) IfNode( ctrl, bol, PROB_MIN, COUNT_UNKNOWN );
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	96 transform_later(iff);
0 a61af66fc99e Initial load duke parents: diff changeset	97
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	98 // Fast path taken.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	99 Node *fast_taken = transform_later( new (C, 1) IfFalseNode(iff) );
0 a61af66fc99e Initial load duke parents: diff changeset	100
a61af66fc99e Initial load duke parents: diff changeset	101 // Fast path not-taken, i.e. slow path
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	102 Node *slow_taken = transform_later( new (C, 1) IfTrueNode(iff) );
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	103
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	104 if (return_fast_path) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	105 region->init_req(edge, slow_taken); // Capture slow-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	106 return fast_taken;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	107 } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	108 region->init_req(edge, fast_taken); // Capture fast-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	109 return slow_taken;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	110 }
0 a61af66fc99e Initial load duke parents: diff changeset	111 }
a61af66fc99e Initial load duke parents: diff changeset	112
a61af66fc99e Initial load duke parents: diff changeset	113 //--------------------copy_predefined_input_for_runtime_call--------------------
a61af66fc99e Initial load duke parents: diff changeset	114 void PhaseMacroExpand::copy_predefined_input_for_runtime_call(Node * ctrl, CallNode* oldcall, CallNode* call) {
a61af66fc99e Initial load duke parents: diff changeset	115 // Set fixed predefined input arguments
a61af66fc99e Initial load duke parents: diff changeset	116 call->init_req( TypeFunc::Control, ctrl );
a61af66fc99e Initial load duke parents: diff changeset	117 call->init_req( TypeFunc::I_O , oldcall->in( TypeFunc::I_O) );
a61af66fc99e Initial load duke parents: diff changeset	118 call->init_req( TypeFunc::Memory , oldcall->in( TypeFunc::Memory ) ); // ?????
a61af66fc99e Initial load duke parents: diff changeset	119 call->init_req( TypeFunc::ReturnAdr, oldcall->in( TypeFunc::ReturnAdr ) );
a61af66fc99e Initial load duke parents: diff changeset	120 call->init_req( TypeFunc::FramePtr, oldcall->in( TypeFunc::FramePtr ) );
a61af66fc99e Initial load duke parents: diff changeset	121 }
a61af66fc99e Initial load duke parents: diff changeset	122
a61af66fc99e Initial load duke parents: diff changeset	123 //------------------------------make_slow_call---------------------------------
a61af66fc99e Initial load duke parents: diff changeset	124 CallNode* PhaseMacroExpand::make_slow_call(CallNode oldcall, const TypeFunc slow_call_type, address slow_call, const char* leaf_name, Node* slow_path, Node* parm0, Node* parm1) {
a61af66fc99e Initial load duke parents: diff changeset	125
a61af66fc99e Initial load duke parents: diff changeset	126 // Slow-path call
a61af66fc99e Initial load duke parents: diff changeset	127 int size = slow_call_type->domain()->cnt();
a61af66fc99e Initial load duke parents: diff changeset	128 CallNode *call = leaf_name
a61af66fc99e Initial load duke parents: diff changeset	129 ? (CallNode*)new (C, size) CallLeafNode ( slow_call_type, slow_call, leaf_name, TypeRawPtr::BOTTOM )
a61af66fc99e Initial load duke parents: diff changeset	130 : (CallNode*)new (C, size) CallStaticJavaNode( slow_call_type, slow_call, OptoRuntime::stub_name(slow_call), oldcall->jvms()->bci(), TypeRawPtr::BOTTOM );
a61af66fc99e Initial load duke parents: diff changeset	131
a61af66fc99e Initial load duke parents: diff changeset	132 // Slow path call has no side-effects, uses few values
a61af66fc99e Initial load duke parents: diff changeset	133 copy_predefined_input_for_runtime_call(slow_path, oldcall, call );
a61af66fc99e Initial load duke parents: diff changeset	134 if (parm0 != NULL) call->init_req(TypeFunc::Parms+0, parm0);
a61af66fc99e Initial load duke parents: diff changeset	135 if (parm1 != NULL) call->init_req(TypeFunc::Parms+1, parm1);
a61af66fc99e Initial load duke parents: diff changeset	136 copy_call_debug_info(oldcall, call);
a61af66fc99e Initial load duke parents: diff changeset	137 call->set_cnt(PROB_UNLIKELY_MAG(4)); // Same effect as RC_UNCOMMON.
a61af66fc99e Initial load duke parents: diff changeset	138 _igvn.hash_delete(oldcall);
a61af66fc99e Initial load duke parents: diff changeset	139 _igvn.subsume_node(oldcall, call);
a61af66fc99e Initial load duke parents: diff changeset	140 transform_later(call);
a61af66fc99e Initial load duke parents: diff changeset	141
a61af66fc99e Initial load duke parents: diff changeset	142 return call;
a61af66fc99e Initial load duke parents: diff changeset	143 }
a61af66fc99e Initial load duke parents: diff changeset	144
a61af66fc99e Initial load duke parents: diff changeset	145 void PhaseMacroExpand::extract_call_projections(CallNode *call) {
a61af66fc99e Initial load duke parents: diff changeset	146 _fallthroughproj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	147 _fallthroughcatchproj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	148 _ioproj_fallthrough = NULL;
a61af66fc99e Initial load duke parents: diff changeset	149 _ioproj_catchall = NULL;
a61af66fc99e Initial load duke parents: diff changeset	150 _catchallcatchproj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	151 _memproj_fallthrough = NULL;
a61af66fc99e Initial load duke parents: diff changeset	152 _memproj_catchall = NULL;
a61af66fc99e Initial load duke parents: diff changeset	153 _resproj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	154 for (DUIterator_Fast imax, i = call->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load duke parents: diff changeset	155 ProjNode *pn = call->fast_out(i)->as_Proj();
a61af66fc99e Initial load duke parents: diff changeset	156 switch (pn->_con) {
a61af66fc99e Initial load duke parents: diff changeset	157 case TypeFunc::Control:
a61af66fc99e Initial load duke parents: diff changeset	158 {
a61af66fc99e Initial load duke parents: diff changeset	159 // For Control (fallthrough) and I_O (catch_all_index) we have CatchProj -> Catch -> Proj
a61af66fc99e Initial load duke parents: diff changeset	160 _fallthroughproj = pn;
a61af66fc99e Initial load duke parents: diff changeset	161 DUIterator_Fast jmax, j = pn->fast_outs(jmax);
a61af66fc99e Initial load duke parents: diff changeset	162 const Node *cn = pn->fast_out(j);
a61af66fc99e Initial load duke parents: diff changeset	163 if (cn->is_Catch()) {
a61af66fc99e Initial load duke parents: diff changeset	164 ProjNode *cpn = NULL;
a61af66fc99e Initial load duke parents: diff changeset	165 for (DUIterator_Fast kmax, k = cn->fast_outs(kmax); k < kmax; k++) {
a61af66fc99e Initial load duke parents: diff changeset	166 cpn = cn->fast_out(k)->as_Proj();
a61af66fc99e Initial load duke parents: diff changeset	167 assert(cpn->is_CatchProj(), "must be a CatchProjNode");
a61af66fc99e Initial load duke parents: diff changeset	168 if (cpn->_con == CatchProjNode::fall_through_index)
a61af66fc99e Initial load duke parents: diff changeset	169 _fallthroughcatchproj = cpn;
a61af66fc99e Initial load duke parents: diff changeset	170 else {
a61af66fc99e Initial load duke parents: diff changeset	171 assert(cpn->_con == CatchProjNode::catch_all_index, "must be correct index.");
a61af66fc99e Initial load duke parents: diff changeset	172 _catchallcatchproj = cpn;
a61af66fc99e Initial load duke parents: diff changeset	173 }
a61af66fc99e Initial load duke parents: diff changeset	174 }
a61af66fc99e Initial load duke parents: diff changeset	175 }
a61af66fc99e Initial load duke parents: diff changeset	176 break;
a61af66fc99e Initial load duke parents: diff changeset	177 }
a61af66fc99e Initial load duke parents: diff changeset	178 case TypeFunc::I_O:
a61af66fc99e Initial load duke parents: diff changeset	179 if (pn->_is_io_use)
a61af66fc99e Initial load duke parents: diff changeset	180 _ioproj_catchall = pn;
a61af66fc99e Initial load duke parents: diff changeset	181 else
a61af66fc99e Initial load duke parents: diff changeset	182 _ioproj_fallthrough = pn;
a61af66fc99e Initial load duke parents: diff changeset	183 break;
a61af66fc99e Initial load duke parents: diff changeset	184 case TypeFunc::Memory:
a61af66fc99e Initial load duke parents: diff changeset	185 if (pn->_is_io_use)
a61af66fc99e Initial load duke parents: diff changeset	186 _memproj_catchall = pn;
a61af66fc99e Initial load duke parents: diff changeset	187 else
a61af66fc99e Initial load duke parents: diff changeset	188 _memproj_fallthrough = pn;
a61af66fc99e Initial load duke parents: diff changeset	189 break;
a61af66fc99e Initial load duke parents: diff changeset	190 case TypeFunc::Parms:
a61af66fc99e Initial load duke parents: diff changeset	191 _resproj = pn;
a61af66fc99e Initial load duke parents: diff changeset	192 break;
a61af66fc99e Initial load duke parents: diff changeset	193 default:
a61af66fc99e Initial load duke parents: diff changeset	194 assert(false, "unexpected projection from allocation node.");
a61af66fc99e Initial load duke parents: diff changeset	195 }
a61af66fc99e Initial load duke parents: diff changeset	196 }
a61af66fc99e Initial load duke parents: diff changeset	197
a61af66fc99e Initial load duke parents: diff changeset	198 }
a61af66fc99e Initial load duke parents: diff changeset	199
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	200 // Eliminate a card mark sequence. p2x is a ConvP2XNode
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	201 void PhaseMacroExpand::eliminate_card_mark(Node *p2x) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	202 assert(p2x->Opcode() == Op_CastP2X, "ConvP2XNode required");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	203 Node *shift = p2x->unique_out();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	204 Node *addp = shift->unique_out();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	205 for (DUIterator_Last jmin, j = addp->last_outs(jmin); j >= jmin; --j) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	206 Node *st = addp->last_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	207 assert(st->is_Store(), "store required");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	208 _igvn.replace_node(st, st->in(MemNode::Memory));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	209 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	210 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	211
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	212 // Search for a memory operation for the specified memory slice.
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	213 static Node scan_mem_chain(Node mem, int alias_idx, int offset, Node start_mem, Node alloc, PhaseGVN *phase) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	214 Node *orig_mem = mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	215 Node *alloc_mem = alloc->in(TypeFunc::Memory);
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	216 const TypeOopPtr *tinst = phase->C->get_adr_type(alias_idx)->isa_oopptr();
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	217 while (true) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	218 if (mem == alloc_mem \|\| mem == start_mem ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	219 return mem; // hit one of our sentinals
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	220 } else if (mem->is_MergeMem()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	221 mem = mem->as_MergeMem()->memory_at(alias_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	222 } else if (mem->is_Proj() && mem->as_Proj()->_con == TypeFunc::Memory) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	223 Node *in = mem->in(0);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	224 // we can safely skip over safepoints, calls, locks and membars because we
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	225 // already know that the object is safe to eliminate.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	226 if (in->is_Initialize() && in->as_Initialize()->allocation() == alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	227 return in;
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	228 } else if (in->is_Call()) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	229 CallNode *call = in->as_Call();
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	230 if (!call->may_modify(tinst, phase)) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	231 mem = call->in(TypeFunc::Memory);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	232 }
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	233 mem = in->in(TypeFunc::Memory);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	234 } else if (in->is_MemBar()) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	235 mem = in->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	236 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	237 assert(false, "unexpected projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	238 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	239 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	240 const TypePtr* atype = mem->as_Store()->adr_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	241 int adr_idx = Compile::current()->get_alias_index(atype);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	242 if (adr_idx == alias_idx) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	243 assert(atype->isa_oopptr(), "address type must be oopptr");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	244 int adr_offset = atype->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	245 uint adr_iid = atype->is_oopptr()->instance_id();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	246 // Array elements references have the same alias_idx
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	247 // but different offset and different instance_id.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	248 if (adr_offset == offset && adr_iid == alloc->_idx)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	249 return mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	250 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	251 assert(adr_idx == Compile::AliasIdxRaw, "address must match or be raw");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	252 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	253 mem = mem->in(MemNode::Memory);
584 49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	254 } else if (mem->Opcode() == Op_SCMemProj) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	255 assert(mem->in(0)->is_LoadStore(), "sanity");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	256 const TypePtr* atype = mem->in(0)->in(MemNode::Address)->bottom_type()->is_ptr();
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	257 int adr_idx = Compile::current()->get_alias_index(atype);
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	258 if (adr_idx == alias_idx) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	259 assert(false, "Object is not scalar replaceable if a LoadStore node access its field");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	260 return NULL;
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	261 }
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	262 mem = mem->in(0)->in(MemNode::Memory);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	263 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	264 return mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	265 }
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	266 assert(mem != orig_mem, "dead memory loop");
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	267 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	268 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	269
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	270 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	271 // Given a Memory Phi, compute a value Phi containing the values from stores
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	272 // on the input paths.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	273 // Note: this function is recursive, its depth is limied by the "level" argument
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	274 // Returns the computed Phi, or NULL if it cannot compute it.
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	275 Node PhaseMacroExpand::value_from_mem_phi(Node mem, BasicType ft, const Type phi_type, const TypeOopPtr adr_t, Node alloc, Node_Stack value_phis, int level) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	276 assert(mem->is_Phi(), "sanity");
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	277 int alias_idx = C->get_alias_index(adr_t);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	278 int offset = adr_t->offset();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	279 int instance_id = adr_t->instance_id();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	280
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	281 // Check if an appropriate value phi already exists.
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	282 Node* region = mem->in(0);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	283 for (DUIterator_Fast kmax, k = region->fast_outs(kmax); k < kmax; k++) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	284 Node* phi = region->fast_out(k);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	285 if (phi->is_Phi() && phi != mem &&
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	286 phi->as_Phi()->is_same_inst_field(phi_type, instance_id, alias_idx, offset)) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	287 return phi;
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	288 }
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	289 }
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	290 // Check if an appropriate new value phi already exists.
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	291 Node* new_phi = NULL;
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	292 uint size = value_phis->size();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	293 for (uint i=0; i < size; i++) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	294 if ( mem->_idx == value_phis->index_at(i) ) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	295 return value_phis->node_at(i);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	296 }
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	297 }
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	298
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	299 if (level <= 0) {
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	300 return NULL; // Give up: phi tree too deep
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	301 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	302 Node *start_mem = C->start()->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	303 Node *alloc_mem = alloc->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	304
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	305 uint length = mem->req();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	306 GrowableArray <Node *> values(length, length, NULL);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	307
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	308 // create a new Phi for the value
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	309 PhiNode *phi = new (C, length) PhiNode(mem->in(0), phi_type, NULL, instance_id, alias_idx, offset);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	310 transform_later(phi);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	311 value_phis->push(phi, mem->_idx);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	312
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	313 for (uint j = 1; j < length; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	314 Node *in = mem->in(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	315 if (in == NULL \|\| in->is_top()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	316 values.at_put(j, in);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	317 } else {
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	318 Node *val = scan_mem_chain(in, alias_idx, offset, start_mem, alloc, &_igvn);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	319 if (val == start_mem \|\| val == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	320 // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	321 values.at_put(j, _igvn.zerocon(ft));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	322 continue;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	323 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	324 if (val->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	325 val = val->as_Initialize()->find_captured_store(offset, type2aelembytes(ft), &_igvn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	326 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	327 if (val == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	328 return NULL; // can't find a value on this path
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	329 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	330 if (val == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	331 values.at_put(j, mem);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	332 } else if (val->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	333 values.at_put(j, val->in(MemNode::ValueIn));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	334 } else if(val->is_Proj() && val->in(0) == alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	335 values.at_put(j, _igvn.zerocon(ft));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	336 } else if (val->is_Phi()) {
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	337 val = value_from_mem_phi(val, ft, phi_type, adr_t, alloc, value_phis, level-1);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	338 if (val == NULL) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	339 return NULL;
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	340 }
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	341 values.at_put(j, val);
584 49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	342 } else if (val->Opcode() == Op_SCMemProj) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	343 assert(val->in(0)->is_LoadStore(), "sanity");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	344 assert(false, "Object is not scalar replaceable if a LoadStore node access its field");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	345 return NULL;
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	346 } else {
584 49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	347 #ifdef ASSERT
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	348 val->dump();
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	349 assert(false, "unknown node on this path");
584 49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path") kvn parents: 565 diff changeset	350 #endif
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	351 return NULL; // unknown node on this path
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	352 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	353 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	354 }
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	355 // Set Phi's inputs
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	356 for (uint j = 1; j < length; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	357 if (values.at(j) == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	358 phi->init_req(j, phi);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	359 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	360 phi->init_req(j, values.at(j));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	361 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	362 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	363 return phi;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	364 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	365
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	366 // Search the last value stored into the object's field.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	367 Node PhaseMacroExpand::value_from_mem(Node sfpt_mem, BasicType ft, const Type ftype, const TypeOopPtr adr_t, Node *alloc) {
223 1dd146f17531 6716441: error in meet with +DoEscapeAnalysis kvn parents: 221 diff changeset	368 assert(adr_t->is_known_instance_field(), "instance required");
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis kvn parents: 221 diff changeset	369 int instance_id = adr_t->instance_id();
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis kvn parents: 221 diff changeset	370 assert((uint)instance_id == alloc->_idx, "wrong allocation");
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	371
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	372 int alias_idx = C->get_alias_index(adr_t);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	373 int offset = adr_t->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	374 Node *start_mem = C->start()->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	375 Node *alloc_ctrl = alloc->in(TypeFunc::Control);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	376 Node *alloc_mem = alloc->in(TypeFunc::Memory);
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	377 Arena *a = Thread::current()->resource_area();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	378 VectorSet visited(a);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	379
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	380
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	381 bool done = sfpt_mem == alloc_mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	382 Node *mem = sfpt_mem;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	383 while (!done) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	384 if (visited.test_set(mem->_idx)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	385 return NULL; // found a loop, give up
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	386 }
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	387 mem = scan_mem_chain(mem, alias_idx, offset, start_mem, alloc, &_igvn);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	388 if (mem == start_mem \|\| mem == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	389 done = true; // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	390 } else if (mem->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	391 mem = mem->as_Initialize()->find_captured_store(offset, type2aelembytes(ft), &_igvn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	392 if (mem == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	393 done = true; // Something go wrong.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	394 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	395 const TypePtr* atype = mem->as_Store()->adr_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	396 assert(C->get_alias_index(atype) == Compile::AliasIdxRaw, "store is correct memory slice");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	397 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	398 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	399 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	400 const TypeOopPtr* atype = mem->as_Store()->adr_type()->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	401 assert(atype != NULL, "address type must be oopptr");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	402 assert(C->get_alias_index(atype) == alias_idx &&
223 1dd146f17531 6716441: error in meet with +DoEscapeAnalysis kvn parents: 221 diff changeset	403 atype->is_known_instance_field() && atype->offset() == offset &&
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	404 atype->instance_id() == instance_id, "store is correct memory slice");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	405 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	406 } else if (mem->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	407 // try to find a phi's unique input
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	408 Node *unique_input = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	409 Node *top = C->top();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	410 for (uint i = 1; i < mem->req(); i++) {
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	411 Node *n = scan_mem_chain(mem->in(i), alias_idx, offset, start_mem, alloc, &_igvn);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	412 if (n == NULL \|\| n == top \|\| n == mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	413 continue;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	414 } else if (unique_input == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	415 unique_input = n;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	416 } else if (unique_input != n) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	417 unique_input = top;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	418 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	419 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	420 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	421 if (unique_input != NULL && unique_input != top) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	422 mem = unique_input;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	423 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	424 done = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	425 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	426 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	427 assert(false, "unexpected node");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	428 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	429 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	430 if (mem != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	431 if (mem == start_mem \|\| mem == alloc_mem) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	432 // hit a sentinel, return appropriate 0 value
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	433 return _igvn.zerocon(ft);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	434 } else if (mem->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	435 return mem->in(MemNode::ValueIn);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	436 } else if (mem->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	437 // attempt to produce a Phi reflecting the values on the input paths of the Phi
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	438 Node_Stack value_phis(a, 8);
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	439 Node * phi = value_from_mem_phi(mem, ft, ftype, adr_t, alloc, &value_phis, ValueSearchLimit);
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	440 if (phi != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	441 return phi;
247 02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	442 } else {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	443 // Kill all new Phis
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	444 while(value_phis.is_nonempty()) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	445 Node* n = value_phis.node();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	446 _igvn.hash_delete(n);
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	447 _igvn.subsume_node(n, C->top());
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	448 value_phis.pop();
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric kvn parents: 235 diff changeset	449 }
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	450 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	451 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	452 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	453 // Something go wrong.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	454 return NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	455 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	456
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	457 // Check the possibility of scalar replacement.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	458 bool PhaseMacroExpand::can_eliminate_allocation(AllocateNode alloc, GrowableArray <SafePointNode >& safepoints) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	459 // Scan the uses of the allocation to check for anything that would
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	460 // prevent us from eliminating it.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	461 NOT_PRODUCT( const char* fail_eliminate = NULL; )
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	462 DEBUG_ONLY( Node* disq_node = NULL; )
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	463 bool can_eliminate = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	464
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	465 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	466 const TypeOopPtr* res_type = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	467 if (res == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	468 // All users were eliminated.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	469 } else if (!res->is_CheckCastPP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	470 alloc->_is_scalar_replaceable = false; // don't try again
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	471 NOT_PRODUCT(fail_eliminate = "Allocation does not have unique CheckCastPP";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	472 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	473 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	474 res_type = _igvn.type(res)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	475 if (res_type == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	476 NOT_PRODUCT(fail_eliminate = "Neither instance or array allocation";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	477 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	478 } else if (res_type->isa_aryptr()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	479 int length = alloc->in(AllocateNode::ALength)->find_int_con(-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	480 if (length < 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	481 NOT_PRODUCT(fail_eliminate = "Array's size is not constant";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	482 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	483 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	484 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	485 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	486
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	487 if (can_eliminate && res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	488 for (DUIterator_Fast jmax, j = res->fast_outs(jmax);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	489 j < jmax && can_eliminate; j++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	490 Node* use = res->fast_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	491
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	492 if (use->is_AddP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	493 const TypePtr* addp_type = _igvn.type(use)->is_ptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	494 int offset = addp_type->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	495
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	496 if (offset == Type::OffsetTop \|\| offset == Type::OffsetBot) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	497 NOT_PRODUCT(fail_eliminate = "Undefined field referrence";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	498 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	499 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	500 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	501 for (DUIterator_Fast kmax, k = use->fast_outs(kmax);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	502 k < kmax && can_eliminate; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	503 Node* n = use->fast_out(k);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	504 if (!n->is_Store() && n->Opcode() != Op_CastP2X) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	505 DEBUG_ONLY(disq_node = n;)
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 247 diff changeset	506 if (n->is_Load() \|\| n->is_LoadStore()) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	507 NOT_PRODUCT(fail_eliminate = "Field load";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	508 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	509 NOT_PRODUCT(fail_eliminate = "Not store field referrence";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	510 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	511 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	512 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	513 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	514 } else if (use->is_SafePoint()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	515 SafePointNode* sfpt = use->as_SafePoint();
168 7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops kvn parents: 163 diff changeset	516 if (sfpt->is_Call() && sfpt->as_Call()->has_non_debug_use(res)) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	517 // Object is passed as argument.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	518 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	519 NOT_PRODUCT(fail_eliminate = "Object is passed as argument";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	520 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	521 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	522 Node* sfptMem = sfpt->memory();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	523 if (sfptMem == NULL \|\| sfptMem->is_top()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	524 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	525 NOT_PRODUCT(fail_eliminate = "NULL or TOP memory";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	526 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	527 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	528 safepoints.append_if_missing(sfpt);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	529 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	530 } else if (use->Opcode() != Op_CastP2X) { // CastP2X is used by card mark
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	531 if (use->is_Phi()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	532 if (use->outcnt() == 1 && use->unique_out()->Opcode() == Op_Return) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	533 NOT_PRODUCT(fail_eliminate = "Object is return value";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	534 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	535 NOT_PRODUCT(fail_eliminate = "Object is referenced by Phi";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	536 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	537 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	538 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	539 if (use->Opcode() == Op_Return) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	540 NOT_PRODUCT(fail_eliminate = "Object is return value";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	541 }else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	542 NOT_PRODUCT(fail_eliminate = "Object is referenced by node";)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	543 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	544 DEBUG_ONLY(disq_node = use;)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	545 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	546 can_eliminate = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	547 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	548 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	549 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	550
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	551 #ifndef PRODUCT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	552 if (PrintEliminateAllocations) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	553 if (can_eliminate) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	554 tty->print("Scalar ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	555 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	556 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	557 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	558 res->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	559 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	560 tty->print("NotScalar (%s)", fail_eliminate);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	561 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	562 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	563 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	564 res->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	565 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	566 if (disq_node != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	567 tty->print(" >>>> ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	568 disq_node->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	569 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	570 #endif /ASSERT/
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	571 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	572 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	573 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	574 return can_eliminate;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	575 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	576
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	577 // Do scalar replacement.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	578 bool PhaseMacroExpand::scalar_replacement(AllocateNode alloc, GrowableArray <SafePointNode >& safepoints) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	579 GrowableArray <SafePointNode *> safepoints_done;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	580
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	581 ciKlass* klass = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	582 ciInstanceKlass* iklass = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	583 int nfields = 0;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	584 int array_base;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	585 int element_size;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	586 BasicType basic_elem_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	587 ciType* elem_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	588
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	589 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	590 const TypeOopPtr* res_type = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	591 if (res != NULL) { // Could be NULL when there are no users
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	592 res_type = _igvn.type(res)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	593 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	594
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	595 if (res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	596 klass = res_type->klass();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	597 if (res_type->isa_instptr()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	598 // find the fields of the class which will be needed for safepoint debug information
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	599 assert(klass->is_instance_klass(), "must be an instance klass.");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	600 iklass = klass->as_instance_klass();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	601 nfields = iklass->nof_nonstatic_fields();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	602 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	603 // find the array's elements which will be needed for safepoint debug information
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	604 nfields = alloc->in(AllocateNode::ALength)->find_int_con(-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	605 assert(klass->is_array_klass() && nfields >= 0, "must be an array klass.");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	606 elem_type = klass->as_array_klass()->element_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	607 basic_elem_type = elem_type->basic_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	608 array_base = arrayOopDesc::base_offset_in_bytes(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	609 element_size = type2aelembytes(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	610 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	611 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	612 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	613 // Process the safepoint uses
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	614 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	615 while (safepoints.length() > 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	616 SafePointNode* sfpt = safepoints.pop();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	617 Node* mem = sfpt->memory();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	618 uint first_ind = sfpt->req();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	619 SafePointScalarObjectNode* sobj = new (C, 1) SafePointScalarObjectNode(res_type,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	620 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	621 alloc,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	622 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	623 first_ind, nfields);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	624 sobj->init_req(0, sfpt->in(TypeFunc::Control));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	625 transform_later(sobj);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	626
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	627 // Scan object's fields adding an input to the safepoint for each field.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	628 for (int j = 0; j < nfields; j++) {
306 af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows kvn parents: 253 diff changeset	629 intptr_t offset;
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	630 ciField* field = NULL;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	631 if (iklass != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	632 field = iklass->nonstatic_field_at(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	633 offset = field->offset();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	634 elem_type = field->type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	635 basic_elem_type = field->layout_type();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	636 } else {
306 af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows kvn parents: 253 diff changeset	637 offset = array_base + j * (intptr_t)element_size;
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	638 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	639
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	640 const Type *field_type;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	641 // The next code is taken from Parse::do_get_xxx().
124 b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	642 if (basic_elem_type == T_OBJECT \|\| basic_elem_type == T_ARRAY) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	643 if (!elem_type->is_loaded()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	644 field_type = TypeInstPtr::BOTTOM;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	645 } else if (field != NULL && field->is_constant()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	646 // This can happen if the constant oop is non-perm.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	647 ciObject* con = field->constant_value().as_object();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	648 // Do not "join" in the previous type; it doesn't add value,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	649 // and may yield a vacuous result if the field is of interface type.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	650 field_type = TypeOopPtr::make_from_constant(con)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	651 assert(field_type != NULL, "field singleton type must be consistent");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	652 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	653 field_type = TypeOopPtr::make_from_klass(elem_type->as_klass());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	654 }
124 b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	655 if (UseCompressedOops) {
221 1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	656 field_type = field_type->make_narrowoop();
124 b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	657 basic_elem_type = T_NARROWOOP;
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	658 }
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	659 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	660 field_type = Type::get_const_basic_type(basic_elem_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	661 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	662
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	663 const TypeOopPtr *field_addr_type = res_type->add_offset(offset)->isa_oopptr();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	664
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	665 Node *field_val = value_from_mem(mem, basic_elem_type, field_type, field_addr_type, alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	666 if (field_val == NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	667 // we weren't able to find a value for this field,
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	668 // give up on eliminating this allocation
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	669 alloc->_is_scalar_replaceable = false; // don't try again
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	670 // remove any extra entries we added to the safepoint
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	671 uint last = sfpt->req() - 1;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	672 for (int k = 0; k < j; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	673 sfpt->del_req(last--);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	674 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	675 // rollback processed safepoints
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	676 while (safepoints_done.length() > 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	677 SafePointNode* sfpt_done = safepoints_done.pop();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	678 // remove any extra entries we added to the safepoint
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	679 last = sfpt_done->req() - 1;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	680 for (int k = 0; k < nfields; k++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	681 sfpt_done->del_req(last--);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	682 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	683 JVMState *jvms = sfpt_done->jvms();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	684 jvms->set_endoff(sfpt_done->req());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	685 // Now make a pass over the debug information replacing any references
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	686 // to SafePointScalarObjectNode with the allocated object.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	687 int start = jvms->debug_start();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	688 int end = jvms->debug_end();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	689 for (int i = start; i < end; i++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	690 if (sfpt_done->in(i)->is_SafePointScalarObject()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	691 SafePointScalarObjectNode* scobj = sfpt_done->in(i)->as_SafePointScalarObject();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	692 if (scobj->first_index() == sfpt_done->req() &&
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	693 scobj->n_fields() == (uint)nfields) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	694 assert(scobj->alloc() == alloc, "sanity");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	695 sfpt_done->set_req(i, res);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	696 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	697 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	698 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	699 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	700 #ifndef PRODUCT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	701 if (PrintEliminateAllocations) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	702 if (field != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	703 tty->print("=== At SafePoint node %d can't find value of Field: ",
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	704 sfpt->_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	705 field->print();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	706 int field_idx = C->get_alias_index(field_addr_type);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	707 tty->print(" (alias_idx=%d)", field_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	708 } else { // Array's element
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	709 tty->print("=== At SafePoint node %d can't find value of array element [%d]",
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	710 sfpt->_idx, j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	711 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	712 tty->print(", which prevents elimination of: ");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	713 if (res == NULL)
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	714 alloc->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	715 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	716 res->dump();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	717 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	718 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	719 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	720 }
124 b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	721 if (UseCompressedOops && field_type->isa_narrowoop()) {
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	722 // Enable "DecodeN(EncodeP(Allocate)) --> Allocate" transformation
b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	723 // to be able scalar replace the allocation.
221 1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	724 if (field_val->is_EncodeP()) {
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	725 field_val = field_val->in(1);
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	726 } else {
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	727 field_val = transform_later(new (C, 2) DecodeNNode(field_val, field_val->bottom_type()->make_ptr()));
1e026f8da827 6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode kvn parents: 216 diff changeset	728 }
124 b130b98db9cf 6689060: Escape Analysis does not work with Compressed Oops kvn parents: 113 diff changeset	729 }
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	730 sfpt->add_req(field_val);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	731 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	732 JVMState *jvms = sfpt->jvms();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	733 jvms->set_endoff(sfpt->req());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	734 // Now make a pass over the debug information replacing any references
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	735 // to the allocated object with "sobj"
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	736 int start = jvms->debug_start();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	737 int end = jvms->debug_end();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	738 for (int i = start; i < end; i++) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	739 if (sfpt->in(i) == res) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	740 sfpt->set_req(i, sobj);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	741 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	742 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	743 safepoints_done.append_if_missing(sfpt); // keep it for rollback
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	744 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	745 return true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	746 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	747
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	748 // Process users of eliminated allocation.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	749 void PhaseMacroExpand::process_users_of_allocation(AllocateNode *alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	750 Node* res = alloc->result_cast();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	751 if (res != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	752 for (DUIterator_Last jmin, j = res->last_outs(jmin); j >= jmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	753 Node *use = res->last_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	754 uint oc1 = res->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	755
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	756 if (use->is_AddP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	757 for (DUIterator_Last kmin, k = use->last_outs(kmin); k >= kmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	758 Node *n = use->last_out(k);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	759 uint oc2 = use->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	760 if (n->is_Store()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	761 _igvn.replace_node(n, n->in(MemNode::Memory));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	762 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	763 assert( n->Opcode() == Op_CastP2X, "CastP2X required");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	764 eliminate_card_mark(n);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	765 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	766 k -= (oc2 - use->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	767 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	768 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	769 assert( !use->is_SafePoint(), "safepoint uses must have been already elimiated");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	770 assert( use->Opcode() == Op_CastP2X, "CastP2X required");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	771 eliminate_card_mark(use);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	772 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	773 j -= (oc1 - res->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	774 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	775 assert(res->outcnt() == 0, "all uses of allocated objects must be deleted");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	776 _igvn.remove_dead_node(res);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	777 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	778
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	779 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	780 // Process other users of allocation's projections
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	781 //
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	782 if (_resproj != NULL && _resproj->outcnt() != 0) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	783 for (DUIterator_Last jmin, j = _resproj->last_outs(jmin); j >= jmin; ) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	784 Node *use = _resproj->last_out(j);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	785 uint oc1 = _resproj->outcnt();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	786 if (use->is_Initialize()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	787 // Eliminate Initialize node.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	788 InitializeNode *init = use->as_Initialize();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	789 assert(init->outcnt() <= 2, "only a control and memory projection expected");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	790 Node *ctrl_proj = init->proj_out(TypeFunc::Control);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	791 if (ctrl_proj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	792 assert(init->in(TypeFunc::Control) == _fallthroughcatchproj, "allocation control projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	793 _igvn.replace_node(ctrl_proj, _fallthroughcatchproj);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	794 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	795 Node *mem_proj = init->proj_out(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	796 if (mem_proj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	797 Node *mem = init->in(TypeFunc::Memory);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	798 #ifdef ASSERT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	799 if (mem->is_MergeMem()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	800 assert(mem->in(TypeFunc::Memory) == _memproj_fallthrough, "allocation memory projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	801 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	802 assert(mem == _memproj_fallthrough, "allocation memory projection");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	803 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	804 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	805 _igvn.replace_node(mem_proj, mem);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	806 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	807 } else if (use->is_AddP()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	808 // raw memory addresses used only by the initialization
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	809 _igvn.hash_delete(use);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	810 _igvn.subsume_node(use, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	811 } else {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	812 assert(false, "only Initialize or AddP expected");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	813 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	814 j -= (oc1 - _resproj->outcnt());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	815 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	816 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	817 if (_fallthroughcatchproj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	818 _igvn.replace_node(_fallthroughcatchproj, alloc->in(TypeFunc::Control));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	819 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	820 if (_memproj_fallthrough != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	821 _igvn.replace_node(_memproj_fallthrough, alloc->in(TypeFunc::Memory));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	822 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	823 if (_memproj_catchall != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	824 _igvn.replace_node(_memproj_catchall, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	825 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	826 if (_ioproj_fallthrough != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	827 _igvn.replace_node(_ioproj_fallthrough, alloc->in(TypeFunc::I_O));
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	828 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	829 if (_ioproj_catchall != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	830 _igvn.replace_node(_ioproj_catchall, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	831 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	832 if (_catchallcatchproj != NULL) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	833 _igvn.replace_node(_catchallcatchproj, C->top());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	834 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	835 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	836
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	837 bool PhaseMacroExpand::eliminate_allocate_node(AllocateNode *alloc) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	838
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	839 if (!EliminateAllocations \|\| !alloc->_is_scalar_replaceable) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	840 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	841 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	842
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	843 extract_call_projections(alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	844
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	845 GrowableArray <SafePointNode *> safepoints;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	846 if (!can_eliminate_allocation(alloc, safepoints)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	847 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	848 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	849
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	850 if (!scalar_replacement(alloc, safepoints)) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	851 return false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	852 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	853
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	854 process_users_of_allocation(alloc);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	855
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	856 #ifndef PRODUCT
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	857 if (PrintEliminateAllocations) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	858 if (alloc->is_AllocateArray())
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	859 tty->print_cr("++++ Eliminated: %d AllocateArray", alloc->_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	860 else
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	861 tty->print_cr("++++ Eliminated: %d Allocate", alloc->_idx);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	862 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	863 #endif
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	864
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	865 return true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	866 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	867
0 a61af66fc99e Initial load duke parents: diff changeset	868
a61af66fc99e Initial load duke parents: diff changeset	869 //---------------------------set_eden_pointers-------------------------
a61af66fc99e Initial load duke parents: diff changeset	870 void PhaseMacroExpand::set_eden_pointers(Node* &eden_top_adr, Node* &eden_end_adr) {
a61af66fc99e Initial load duke parents: diff changeset	871 if (UseTLAB) { // Private allocation: load from TLS
a61af66fc99e Initial load duke parents: diff changeset	872 Node* thread = transform_later(new (C, 1) ThreadLocalNode());
a61af66fc99e Initial load duke parents: diff changeset	873 int tlab_top_offset = in_bytes(JavaThread::tlab_top_offset());
a61af66fc99e Initial load duke parents: diff changeset	874 int tlab_end_offset = in_bytes(JavaThread::tlab_end_offset());
a61af66fc99e Initial load duke parents: diff changeset	875 eden_top_adr = basic_plus_adr(top()/not oop/, thread, tlab_top_offset);
a61af66fc99e Initial load duke parents: diff changeset	876 eden_end_adr = basic_plus_adr(top()/not oop/, thread, tlab_end_offset);
a61af66fc99e Initial load duke parents: diff changeset	877 } else { // Shared allocation: load from globals
a61af66fc99e Initial load duke parents: diff changeset	878 CollectedHeap* ch = Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	879 address top_adr = (address)ch->top_addr();
a61af66fc99e Initial load duke parents: diff changeset	880 address end_adr = (address)ch->end_addr();
a61af66fc99e Initial load duke parents: diff changeset	881 eden_top_adr = makecon(TypeRawPtr::make(top_adr));
a61af66fc99e Initial load duke parents: diff changeset	882 eden_end_adr = basic_plus_adr(eden_top_adr, end_adr - top_adr);
a61af66fc99e Initial load duke parents: diff changeset	883 }
a61af66fc99e Initial load duke parents: diff changeset	884 }
a61af66fc99e Initial load duke parents: diff changeset	885
a61af66fc99e Initial load duke parents: diff changeset	886
a61af66fc99e Initial load duke parents: diff changeset	887 Node* PhaseMacroExpand::make_load(Node* ctl, Node* mem, Node* base, int offset, const Type* value_type, BasicType bt) {
a61af66fc99e Initial load duke parents: diff changeset	888 Node* adr = basic_plus_adr(base, offset);
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	889 const TypePtr* adr_type = adr->bottom_type()->is_ptr();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	890 Node* value = LoadNode::make(_igvn, ctl, mem, adr, adr_type, value_type, bt);
0 a61af66fc99e Initial load duke parents: diff changeset	891 transform_later(value);
a61af66fc99e Initial load duke parents: diff changeset	892 return value;
a61af66fc99e Initial load duke parents: diff changeset	893 }
a61af66fc99e Initial load duke parents: diff changeset	894
a61af66fc99e Initial load duke parents: diff changeset	895
a61af66fc99e Initial load duke parents: diff changeset	896 Node* PhaseMacroExpand::make_store(Node* ctl, Node* mem, Node* base, int offset, Node* value, BasicType bt) {
a61af66fc99e Initial load duke parents: diff changeset	897 Node* adr = basic_plus_adr(base, offset);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	898 mem = StoreNode::make(_igvn, ctl, mem, adr, NULL, value, bt);
0 a61af66fc99e Initial load duke parents: diff changeset	899 transform_later(mem);
a61af66fc99e Initial load duke parents: diff changeset	900 return mem;
a61af66fc99e Initial load duke parents: diff changeset	901 }
a61af66fc99e Initial load duke parents: diff changeset	902
a61af66fc99e Initial load duke parents: diff changeset	903 //=============================================================================
a61af66fc99e Initial load duke parents: diff changeset	904 //
a61af66fc99e Initial load duke parents: diff changeset	905 // A L L O C A T I O N
a61af66fc99e Initial load duke parents: diff changeset	906 //
a61af66fc99e Initial load duke parents: diff changeset	907 // Allocation attempts to be fast in the case of frequent small objects.
a61af66fc99e Initial load duke parents: diff changeset	908 // It breaks down like this:
a61af66fc99e Initial load duke parents: diff changeset	909 //
a61af66fc99e Initial load duke parents: diff changeset	910 // 1) Size in doublewords is computed. This is a constant for objects and
a61af66fc99e Initial load duke parents: diff changeset	911 // variable for most arrays. Doubleword units are used to avoid size
a61af66fc99e Initial load duke parents: diff changeset	912 // overflow of huge doubleword arrays. We need doublewords in the end for
a61af66fc99e Initial load duke parents: diff changeset	913 // rounding.
a61af66fc99e Initial load duke parents: diff changeset	914 //
a61af66fc99e Initial load duke parents: diff changeset	915 // 2) Size is checked for being 'too large'. Too-large allocations will go
a61af66fc99e Initial load duke parents: diff changeset	916 // the slow path into the VM. The slow path can throw any required
a61af66fc99e Initial load duke parents: diff changeset	917 // exceptions, and does all the special checks for very large arrays. The
a61af66fc99e Initial load duke parents: diff changeset	918 // size test can constant-fold away for objects. For objects with
a61af66fc99e Initial load duke parents: diff changeset	919 // finalizers it constant-folds the otherway: you always go slow with
a61af66fc99e Initial load duke parents: diff changeset	920 // finalizers.
a61af66fc99e Initial load duke parents: diff changeset	921 //
a61af66fc99e Initial load duke parents: diff changeset	922 // 3) If NOT using TLABs, this is the contended loop-back point.
a61af66fc99e Initial load duke parents: diff changeset	923 // Load-Locked the heap top. If using TLABs normal-load the heap top.
a61af66fc99e Initial load duke parents: diff changeset	924 //
a61af66fc99e Initial load duke parents: diff changeset	925 // 4) Check that heap top + size*8 < max. If we fail go the slow ` route.
a61af66fc99e Initial load duke parents: diff changeset	926 // NOTE: "top+size*8" cannot wrap the 4Gig line! Here's why: for largish
a61af66fc99e Initial load duke parents: diff changeset	927 // "size*8" we always enter the VM, where "largish" is a constant picked small
a61af66fc99e Initial load duke parents: diff changeset	928 // enough that there's always space between the eden max and 4Gig (old space is
a61af66fc99e Initial load duke parents: diff changeset	929 // there so it's quite large) and large enough that the cost of entering the VM
a61af66fc99e Initial load duke parents: diff changeset	930 // is dwarfed by the cost to initialize the space.
a61af66fc99e Initial load duke parents: diff changeset	931 //
a61af66fc99e Initial load duke parents: diff changeset	932 // 5) If NOT using TLABs, Store-Conditional the adjusted heap top back
a61af66fc99e Initial load duke parents: diff changeset	933 // down. If contended, repeat at step 3. If using TLABs normal-store
a61af66fc99e Initial load duke parents: diff changeset	934 // adjusted heap top back down; there is no contention.
a61af66fc99e Initial load duke parents: diff changeset	935 //
a61af66fc99e Initial load duke parents: diff changeset	936 // 6) If !ZeroTLAB then Bulk-clear the object/array. Fill in klass & mark
a61af66fc99e Initial load duke parents: diff changeset	937 // fields.
a61af66fc99e Initial load duke parents: diff changeset	938 //
a61af66fc99e Initial load duke parents: diff changeset	939 // 7) Merge with the slow-path; cast the raw memory pointer to the correct
a61af66fc99e Initial load duke parents: diff changeset	940 // oop flavor.
a61af66fc99e Initial load duke parents: diff changeset	941 //
a61af66fc99e Initial load duke parents: diff changeset	942 //=============================================================================
a61af66fc99e Initial load duke parents: diff changeset	943 // FastAllocateSizeLimit value is in DOUBLEWORDS.
a61af66fc99e Initial load duke parents: diff changeset	944 // Allocations bigger than this always go the slow route.
a61af66fc99e Initial load duke parents: diff changeset	945 // This value must be small enough that allocation attempts that need to
a61af66fc99e Initial load duke parents: diff changeset	946 // trigger exceptions go the slow route. Also, it must be small enough so
a61af66fc99e Initial load duke parents: diff changeset	947 // that heap_top + size_in_bytes does not wrap around the 4Gig limit.
a61af66fc99e Initial load duke parents: diff changeset	948 //=============================================================================j//
a61af66fc99e Initial load duke parents: diff changeset	949 // %%% Here is an old comment from parseHelper.cpp; is it outdated?
a61af66fc99e Initial load duke parents: diff changeset	950 // The allocator will coalesce int->oop copies away. See comment in
a61af66fc99e Initial load duke parents: diff changeset	951 // coalesce.cpp about how this works. It depends critically on the exact
a61af66fc99e Initial load duke parents: diff changeset	952 // code shape produced here, so if you are changing this code shape
a61af66fc99e Initial load duke parents: diff changeset	953 // make sure the GC info for the heap-top is correct in and around the
a61af66fc99e Initial load duke parents: diff changeset	954 // slow-path call.
a61af66fc99e Initial load duke parents: diff changeset	955 //
a61af66fc99e Initial load duke parents: diff changeset	956
a61af66fc99e Initial load duke parents: diff changeset	957 void PhaseMacroExpand::expand_allocate_common(
a61af66fc99e Initial load duke parents: diff changeset	958 AllocateNode* alloc, // allocation node to be expanded
a61af66fc99e Initial load duke parents: diff changeset	959 Node* length, // array length for an array allocation
a61af66fc99e Initial load duke parents: diff changeset	960 const TypeFunc* slow_call_type, // Type of slow call
a61af66fc99e Initial load duke parents: diff changeset	961 address slow_call_address // Address of slow call
a61af66fc99e Initial load duke parents: diff changeset	962 )
a61af66fc99e Initial load duke parents: diff changeset	963 {
a61af66fc99e Initial load duke parents: diff changeset	964
a61af66fc99e Initial load duke parents: diff changeset	965 Node* ctrl = alloc->in(TypeFunc::Control);
a61af66fc99e Initial load duke parents: diff changeset	966 Node* mem = alloc->in(TypeFunc::Memory);
a61af66fc99e Initial load duke parents: diff changeset	967 Node* i_o = alloc->in(TypeFunc::I_O);
a61af66fc99e Initial load duke parents: diff changeset	968 Node* size_in_bytes = alloc->in(AllocateNode::AllocSize);
a61af66fc99e Initial load duke parents: diff changeset	969 Node* klass_node = alloc->in(AllocateNode::KlassNode);
a61af66fc99e Initial load duke parents: diff changeset	970 Node* initial_slow_test = alloc->in(AllocateNode::InitialTest);
a61af66fc99e Initial load duke parents: diff changeset	971
a61af66fc99e Initial load duke parents: diff changeset	972 assert(ctrl != NULL, "must have control");
a61af66fc99e Initial load duke parents: diff changeset	973 // We need a Region and corresponding Phi's to merge the slow-path and fast-path results.
a61af66fc99e Initial load duke parents: diff changeset	974 // they will not be used if "always_slow" is set
a61af66fc99e Initial load duke parents: diff changeset	975 enum { slow_result_path = 1, fast_result_path = 2 };
a61af66fc99e Initial load duke parents: diff changeset	976 Node *result_region;
a61af66fc99e Initial load duke parents: diff changeset	977 Node *result_phi_rawmem;
a61af66fc99e Initial load duke parents: diff changeset	978 Node *result_phi_rawoop;
a61af66fc99e Initial load duke parents: diff changeset	979 Node *result_phi_i_o;
a61af66fc99e Initial load duke parents: diff changeset	980
a61af66fc99e Initial load duke parents: diff changeset	981 // The initial slow comparison is a size check, the comparison
a61af66fc99e Initial load duke parents: diff changeset	982 // we want to do is a BoolTest::gt
a61af66fc99e Initial load duke parents: diff changeset	983 bool always_slow = false;
a61af66fc99e Initial load duke parents: diff changeset	984 int tv = _igvn.find_int_con(initial_slow_test, -1);
a61af66fc99e Initial load duke parents: diff changeset	985 if (tv >= 0) {
a61af66fc99e Initial load duke parents: diff changeset	986 always_slow = (tv == 1);
a61af66fc99e Initial load duke parents: diff changeset	987 initial_slow_test = NULL;
a61af66fc99e Initial load duke parents: diff changeset	988 } else {
a61af66fc99e Initial load duke parents: diff changeset	989 initial_slow_test = BoolNode::make_predicate(initial_slow_test, &_igvn);
a61af66fc99e Initial load duke parents: diff changeset	990 }
a61af66fc99e Initial load duke parents: diff changeset	991
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	992 if (DTraceAllocProbes \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	993 !UseTLAB && (!Universe::heap()->supports_inline_contig_alloc() \|\|
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	994 (UseConcMarkSweepGC && CMSIncrementalMode))) {
0 a61af66fc99e Initial load duke parents: diff changeset	995 // Force slow-path allocation
a61af66fc99e Initial load duke parents: diff changeset	996 always_slow = true;
a61af66fc99e Initial load duke parents: diff changeset	997 initial_slow_test = NULL;
a61af66fc99e Initial load duke parents: diff changeset	998 }
a61af66fc99e Initial load duke parents: diff changeset	999
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1000
0 a61af66fc99e Initial load duke parents: diff changeset	1001 enum { too_big_or_final_path = 1, need_gc_path = 2 };
a61af66fc99e Initial load duke parents: diff changeset	1002 Node *slow_region = NULL;
a61af66fc99e Initial load duke parents: diff changeset	1003 Node *toobig_false = ctrl;
a61af66fc99e Initial load duke parents: diff changeset	1004
a61af66fc99e Initial load duke parents: diff changeset	1005 assert (initial_slow_test == NULL \|\| !always_slow, "arguments must be consistent");
a61af66fc99e Initial load duke parents: diff changeset	1006 // generate the initial test if necessary
a61af66fc99e Initial load duke parents: diff changeset	1007 if (initial_slow_test != NULL ) {
a61af66fc99e Initial load duke parents: diff changeset	1008 slow_region = new (C, 3) RegionNode(3);
a61af66fc99e Initial load duke parents: diff changeset	1009
a61af66fc99e Initial load duke parents: diff changeset	1010 // Now make the initial failure test. Usually a too-big test but
a61af66fc99e Initial load duke parents: diff changeset	1011 // might be a TRUE for finalizers or a fancy class check for
a61af66fc99e Initial load duke parents: diff changeset	1012 // newInstance0.
a61af66fc99e Initial load duke parents: diff changeset	1013 IfNode *toobig_iff = new (C, 2) IfNode(ctrl, initial_slow_test, PROB_MIN, COUNT_UNKNOWN);
a61af66fc99e Initial load duke parents: diff changeset	1014 transform_later(toobig_iff);
a61af66fc99e Initial load duke parents: diff changeset	1015 // Plug the failing-too-big test into the slow-path region
a61af66fc99e Initial load duke parents: diff changeset	1016 Node *toobig_true = new (C, 1) IfTrueNode( toobig_iff );
a61af66fc99e Initial load duke parents: diff changeset	1017 transform_later(toobig_true);
a61af66fc99e Initial load duke parents: diff changeset	1018 slow_region ->init_req( too_big_or_final_path, toobig_true );
a61af66fc99e Initial load duke parents: diff changeset	1019 toobig_false = new (C, 1) IfFalseNode( toobig_iff );
a61af66fc99e Initial load duke parents: diff changeset	1020 transform_later(toobig_false);
a61af66fc99e Initial load duke parents: diff changeset	1021 } else { // No initial test, just fall into next case
a61af66fc99e Initial load duke parents: diff changeset	1022 toobig_false = ctrl;
a61af66fc99e Initial load duke parents: diff changeset	1023 debug_only(slow_region = NodeSentinel);
a61af66fc99e Initial load duke parents: diff changeset	1024 }
a61af66fc99e Initial load duke parents: diff changeset	1025
a61af66fc99e Initial load duke parents: diff changeset	1026 Node *slow_mem = mem; // save the current memory state for slow path
a61af66fc99e Initial load duke parents: diff changeset	1027 // generate the fast allocation code unless we know that the initial test will always go slow
a61af66fc99e Initial load duke parents: diff changeset	1028 if (!always_slow) {
565 7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception kvn parents: 490 diff changeset	1029 // Fast path modifies only raw memory.
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception kvn parents: 490 diff changeset	1030 if (mem->is_MergeMem()) {
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception kvn parents: 490 diff changeset	1031 mem = mem->as_MergeMem()->memory_at(Compile::AliasIdxRaw);
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception kvn parents: 490 diff changeset	1032 }
7fe62bb75bf4 6799693: Server compiler leads to data corruption when expression throws an Exception kvn parents: 490 diff changeset	1033
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1034 Node* eden_top_adr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1035 Node* eden_end_adr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1036
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1037 set_eden_pointers(eden_top_adr, eden_end_adr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1038
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1039 // Load Eden::end. Loop invariant and hoisted.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1040 //
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1041 // Note: We set the control input on "eden_end" and "old_eden_top" when using
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1042 // a TLAB to work around a bug where these values were being moved across
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1043 // a safepoint. These are not oops, so they cannot be include in the oop
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1044 // map, but the can be changed by a GC. The proper way to fix this would
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1045 // be to set the raw memory state when generating a SafepointNode. However
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1046 // this will require extensive changes to the loop optimization in order to
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1047 // prevent a degradation of the optimization.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1048 // See comment in memnode.hpp, around line 227 in class LoadPNode.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1049 Node *eden_end = make_load(ctrl, mem, eden_end_adr, 0, TypeRawPtr::BOTTOM, T_ADDRESS);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: 124 diff changeset	1050
0 a61af66fc99e Initial load duke parents: diff changeset	1051 // allocate the Region and Phi nodes for the result
a61af66fc99e Initial load duke parents: diff changeset	1052 result_region = new (C, 3) RegionNode(3);
a61af66fc99e Initial load duke parents: diff changeset	1053 result_phi_rawmem = new (C, 3) PhiNode( result_region, Type::MEMORY, TypeRawPtr::BOTTOM );
a61af66fc99e Initial load duke parents: diff changeset	1054 result_phi_rawoop = new (C, 3) PhiNode( result_region, TypeRawPtr::BOTTOM );
a61af66fc99e Initial load duke parents: diff changeset	1055 result_phi_i_o = new (C, 3) PhiNode( result_region, Type::ABIO ); // I/O is used for Prefetch
a61af66fc99e Initial load duke parents: diff changeset	1056
a61af66fc99e Initial load duke parents: diff changeset	1057 // We need a Region for the loop-back contended case.
a61af66fc99e Initial load duke parents: diff changeset	1058 enum { fall_in_path = 1, contended_loopback_path = 2 };
a61af66fc99e Initial load duke parents: diff changeset	1059 Node *contended_region;
a61af66fc99e Initial load duke parents: diff changeset	1060 Node *contended_phi_rawmem;
a61af66fc99e Initial load duke parents: diff changeset	1061 if( UseTLAB ) {
a61af66fc99e Initial load duke parents: diff changeset	1062 contended_region = toobig_false;
a61af66fc99e Initial load duke parents: diff changeset	1063 contended_phi_rawmem = mem;
a61af66fc99e Initial load duke parents: diff changeset	1064 } else {
a61af66fc99e Initial load duke parents: diff changeset	1065 contended_region = new (C, 3) RegionNode(3);
a61af66fc99e Initial load duke parents: diff changeset	1066 contended_phi_rawmem = new (C, 3) PhiNode( contended_region, Type::MEMORY, TypeRawPtr::BOTTOM);
a61af66fc99e Initial load duke parents: diff changeset	1067 // Now handle the passing-too-big test. We fall into the contended
a61af66fc99e Initial load duke parents: diff changeset	1068 // loop-back merge point.
a61af66fc99e Initial load duke parents: diff changeset	1069 contended_region ->init_req( fall_in_path, toobig_false );
a61af66fc99e Initial load duke parents: diff changeset	1070 contended_phi_rawmem->init_req( fall_in_path, mem );
a61af66fc99e Initial load duke parents: diff changeset	1071 transform_later(contended_region);
a61af66fc99e Initial load duke parents: diff changeset	1072 transform_later(contended_phi_rawmem);
a61af66fc99e Initial load duke parents: diff changeset	1073 }
a61af66fc99e Initial load duke parents: diff changeset	1074
a61af66fc99e Initial load duke parents: diff changeset	1075 // Load(-locked) the heap top.
a61af66fc99e Initial load duke parents: diff changeset	1076 // See note above concerning the control input when using a TLAB
a61af66fc99e Initial load duke parents: diff changeset	1077 Node *old_eden_top = UseTLAB
a61af66fc99e Initial load duke parents: diff changeset	1078 ? new (C, 3) LoadPNode ( ctrl, contended_phi_rawmem, eden_top_adr, TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM )
a61af66fc99e Initial load duke parents: diff changeset	1079 : new (C, 3) LoadPLockedNode( contended_region, contended_phi_rawmem, eden_top_adr );
a61af66fc99e Initial load duke parents: diff changeset	1080
a61af66fc99e Initial load duke parents: diff changeset	1081 transform_later(old_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1082 // Add to heap top to get a new heap top
a61af66fc99e Initial load duke parents: diff changeset	1083 Node *new_eden_top = new (C, 4) AddPNode( top(), old_eden_top, size_in_bytes );
a61af66fc99e Initial load duke parents: diff changeset	1084 transform_later(new_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1085 // Check for needing a GC; compare against heap end
a61af66fc99e Initial load duke parents: diff changeset	1086 Node *needgc_cmp = new (C, 3) CmpPNode( new_eden_top, eden_end );
a61af66fc99e Initial load duke parents: diff changeset	1087 transform_later(needgc_cmp);
a61af66fc99e Initial load duke parents: diff changeset	1088 Node *needgc_bol = new (C, 2) BoolNode( needgc_cmp, BoolTest::ge );
a61af66fc99e Initial load duke parents: diff changeset	1089 transform_later(needgc_bol);
a61af66fc99e Initial load duke parents: diff changeset	1090 IfNode *needgc_iff = new (C, 2) IfNode(contended_region, needgc_bol, PROB_UNLIKELY_MAG(4), COUNT_UNKNOWN );
a61af66fc99e Initial load duke parents: diff changeset	1091 transform_later(needgc_iff);
a61af66fc99e Initial load duke parents: diff changeset	1092
a61af66fc99e Initial load duke parents: diff changeset	1093 // Plug the failing-heap-space-need-gc test into the slow-path region
a61af66fc99e Initial load duke parents: diff changeset	1094 Node *needgc_true = new (C, 1) IfTrueNode( needgc_iff );
a61af66fc99e Initial load duke parents: diff changeset	1095 transform_later(needgc_true);
a61af66fc99e Initial load duke parents: diff changeset	1096 if( initial_slow_test ) {
a61af66fc99e Initial load duke parents: diff changeset	1097 slow_region ->init_req( need_gc_path, needgc_true );
a61af66fc99e Initial load duke parents: diff changeset	1098 // This completes all paths into the slow merge point
a61af66fc99e Initial load duke parents: diff changeset	1099 transform_later(slow_region);
a61af66fc99e Initial load duke parents: diff changeset	1100 } else { // No initial slow path needed!
a61af66fc99e Initial load duke parents: diff changeset	1101 // Just fall from the need-GC path straight into the VM call.
a61af66fc99e Initial load duke parents: diff changeset	1102 slow_region = needgc_true;
a61af66fc99e Initial load duke parents: diff changeset	1103 }
a61af66fc99e Initial load duke parents: diff changeset	1104 // No need for a GC. Setup for the Store-Conditional
a61af66fc99e Initial load duke parents: diff changeset	1105 Node *needgc_false = new (C, 1) IfFalseNode( needgc_iff );
a61af66fc99e Initial load duke parents: diff changeset	1106 transform_later(needgc_false);
a61af66fc99e Initial load duke parents: diff changeset	1107
a61af66fc99e Initial load duke parents: diff changeset	1108 // Grab regular I/O before optional prefetch may change it.
a61af66fc99e Initial load duke parents: diff changeset	1109 // Slow-path does no I/O so just set it to the original I/O.
a61af66fc99e Initial load duke parents: diff changeset	1110 result_phi_i_o->init_req( slow_result_path, i_o );
a61af66fc99e Initial load duke parents: diff changeset	1111
a61af66fc99e Initial load duke parents: diff changeset	1112 i_o = prefetch_allocation(i_o, needgc_false, contended_phi_rawmem,
a61af66fc99e Initial load duke parents: diff changeset	1113 old_eden_top, new_eden_top, length);
a61af66fc99e Initial load duke parents: diff changeset	1114
a61af66fc99e Initial load duke parents: diff changeset	1115 // Store (-conditional) the modified eden top back down.
a61af66fc99e Initial load duke parents: diff changeset	1116 // StorePConditional produces flags for a test PLUS a modified raw
a61af66fc99e Initial load duke parents: diff changeset	1117 // memory state.
a61af66fc99e Initial load duke parents: diff changeset	1118 Node *store_eden_top;
a61af66fc99e Initial load duke parents: diff changeset	1119 Node *fast_oop_ctrl;
a61af66fc99e Initial load duke parents: diff changeset	1120 if( UseTLAB ) {
a61af66fc99e Initial load duke parents: diff changeset	1121 store_eden_top = new (C, 4) StorePNode( needgc_false, contended_phi_rawmem, eden_top_adr, TypeRawPtr::BOTTOM, new_eden_top );
a61af66fc99e Initial load duke parents: diff changeset	1122 transform_later(store_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1123 fast_oop_ctrl = needgc_false; // No contention, so this is the fast path
a61af66fc99e Initial load duke parents: diff changeset	1124 } else {
a61af66fc99e Initial load duke parents: diff changeset	1125 store_eden_top = new (C, 5) StorePConditionalNode( needgc_false, contended_phi_rawmem, eden_top_adr, new_eden_top, old_eden_top );
a61af66fc99e Initial load duke parents: diff changeset	1126 transform_later(store_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1127 Node *contention_check = new (C, 2) BoolNode( store_eden_top, BoolTest::ne );
a61af66fc99e Initial load duke parents: diff changeset	1128 transform_later(contention_check);
a61af66fc99e Initial load duke parents: diff changeset	1129 store_eden_top = new (C, 1) SCMemProjNode(store_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1130 transform_later(store_eden_top);
a61af66fc99e Initial load duke parents: diff changeset	1131
a61af66fc99e Initial load duke parents: diff changeset	1132 // If not using TLABs, check to see if there was contention.
a61af66fc99e Initial load duke parents: diff changeset	1133 IfNode *contention_iff = new (C, 2) IfNode ( needgc_false, contention_check, PROB_MIN, COUNT_UNKNOWN );
a61af66fc99e Initial load duke parents: diff changeset	1134 transform_later(contention_iff);
a61af66fc99e Initial load duke parents: diff changeset	1135 Node *contention_true = new (C, 1) IfTrueNode( contention_iff );
a61af66fc99e Initial load duke parents: diff changeset	1136 transform_later(contention_true);
a61af66fc99e Initial load duke parents: diff changeset	1137 // If contention, loopback and try again.
a61af66fc99e Initial load duke parents: diff changeset	1138 contended_region->init_req( contended_loopback_path, contention_true );
a61af66fc99e Initial load duke parents: diff changeset	1139 contended_phi_rawmem->init_req( contended_loopback_path, store_eden_top );
a61af66fc99e Initial load duke parents: diff changeset	1140
a61af66fc99e Initial load duke parents: diff changeset	1141 // Fast-path succeeded with no contention!
a61af66fc99e Initial load duke parents: diff changeset	1142 Node *contention_false = new (C, 1) IfFalseNode( contention_iff );
a61af66fc99e Initial load duke parents: diff changeset	1143 transform_later(contention_false);
a61af66fc99e Initial load duke parents: diff changeset	1144 fast_oop_ctrl = contention_false;
a61af66fc99e Initial load duke parents: diff changeset	1145 }
a61af66fc99e Initial load duke parents: diff changeset	1146
a61af66fc99e Initial load duke parents: diff changeset	1147 // Rename successful fast-path variables to make meaning more obvious
a61af66fc99e Initial load duke parents: diff changeset	1148 Node* fast_oop = old_eden_top;
a61af66fc99e Initial load duke parents: diff changeset	1149 Node* fast_oop_rawmem = store_eden_top;
a61af66fc99e Initial load duke parents: diff changeset	1150 fast_oop_rawmem = initialize_object(alloc,
a61af66fc99e Initial load duke parents: diff changeset	1151 fast_oop_ctrl, fast_oop_rawmem, fast_oop,
a61af66fc99e Initial load duke parents: diff changeset	1152 klass_node, length, size_in_bytes);
a61af66fc99e Initial load duke parents: diff changeset	1153
a61af66fc99e Initial load duke parents: diff changeset	1154 if (ExtendedDTraceProbes) {
a61af66fc99e Initial load duke parents: diff changeset	1155 // Slow-path call
a61af66fc99e Initial load duke parents: diff changeset	1156 int size = TypeFunc::Parms + 2;
a61af66fc99e Initial load duke parents: diff changeset	1157 CallLeafNode *call = new (C, size) CallLeafNode(OptoRuntime::dtrace_object_alloc_Type(),
a61af66fc99e Initial load duke parents: diff changeset	1158 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc_base),
a61af66fc99e Initial load duke parents: diff changeset	1159 "dtrace_object_alloc",
a61af66fc99e Initial load duke parents: diff changeset	1160 TypeRawPtr::BOTTOM);
a61af66fc99e Initial load duke parents: diff changeset	1161
a61af66fc99e Initial load duke parents: diff changeset	1162 // Get base of thread-local storage area
a61af66fc99e Initial load duke parents: diff changeset	1163 Node* thread = new (C, 1) ThreadLocalNode();
a61af66fc99e Initial load duke parents: diff changeset	1164 transform_later(thread);
a61af66fc99e Initial load duke parents: diff changeset	1165
a61af66fc99e Initial load duke parents: diff changeset	1166 call->init_req(TypeFunc::Parms+0, thread);
a61af66fc99e Initial load duke parents: diff changeset	1167 call->init_req(TypeFunc::Parms+1, fast_oop);
a61af66fc99e Initial load duke parents: diff changeset	1168 call->init_req( TypeFunc::Control, fast_oop_ctrl );
a61af66fc99e Initial load duke parents: diff changeset	1169 call->init_req( TypeFunc::I_O , top() ) ; // does no i/o
a61af66fc99e Initial load duke parents: diff changeset	1170 call->init_req( TypeFunc::Memory , fast_oop_rawmem );
a61af66fc99e Initial load duke parents: diff changeset	1171 call->init_req( TypeFunc::ReturnAdr, alloc->in(TypeFunc::ReturnAdr) );
a61af66fc99e Initial load duke parents: diff changeset	1172 call->init_req( TypeFunc::FramePtr, alloc->in(TypeFunc::FramePtr) );
a61af66fc99e Initial load duke parents: diff changeset	1173 transform_later(call);
a61af66fc99e Initial load duke parents: diff changeset	1174 fast_oop_ctrl = new (C, 1) ProjNode(call,TypeFunc::Control);
a61af66fc99e Initial load duke parents: diff changeset	1175 transform_later(fast_oop_ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1176 fast_oop_rawmem = new (C, 1) ProjNode(call,TypeFunc::Memory);
a61af66fc99e Initial load duke parents: diff changeset	1177 transform_later(fast_oop_rawmem);
a61af66fc99e Initial load duke parents: diff changeset	1178 }
a61af66fc99e Initial load duke parents: diff changeset	1179
a61af66fc99e Initial load duke parents: diff changeset	1180 // Plug in the successful fast-path into the result merge point
a61af66fc99e Initial load duke parents: diff changeset	1181 result_region ->init_req( fast_result_path, fast_oop_ctrl );
a61af66fc99e Initial load duke parents: diff changeset	1182 result_phi_rawoop->init_req( fast_result_path, fast_oop );
a61af66fc99e Initial load duke parents: diff changeset	1183 result_phi_i_o ->init_req( fast_result_path, i_o );
a61af66fc99e Initial load duke parents: diff changeset	1184 result_phi_rawmem->init_req( fast_result_path, fast_oop_rawmem );
a61af66fc99e Initial load duke parents: diff changeset	1185 } else {
a61af66fc99e Initial load duke parents: diff changeset	1186 slow_region = ctrl;
a61af66fc99e Initial load duke parents: diff changeset	1187 }
a61af66fc99e Initial load duke parents: diff changeset	1188
a61af66fc99e Initial load duke parents: diff changeset	1189 // Generate slow-path call
a61af66fc99e Initial load duke parents: diff changeset	1190 CallNode *call = new (C, slow_call_type->domain()->cnt())
a61af66fc99e Initial load duke parents: diff changeset	1191 CallStaticJavaNode(slow_call_type, slow_call_address,
a61af66fc99e Initial load duke parents: diff changeset	1192 OptoRuntime::stub_name(slow_call_address),
a61af66fc99e Initial load duke parents: diff changeset	1193 alloc->jvms()->bci(),
a61af66fc99e Initial load duke parents: diff changeset	1194 TypePtr::BOTTOM);
a61af66fc99e Initial load duke parents: diff changeset	1195 call->init_req( TypeFunc::Control, slow_region );
a61af66fc99e Initial load duke parents: diff changeset	1196 call->init_req( TypeFunc::I_O , top() ) ; // does no i/o
a61af66fc99e Initial load duke parents: diff changeset	1197 call->init_req( TypeFunc::Memory , slow_mem ); // may gc ptrs
a61af66fc99e Initial load duke parents: diff changeset	1198 call->init_req( TypeFunc::ReturnAdr, alloc->in(TypeFunc::ReturnAdr) );
a61af66fc99e Initial load duke parents: diff changeset	1199 call->init_req( TypeFunc::FramePtr, alloc->in(TypeFunc::FramePtr) );
a61af66fc99e Initial load duke parents: diff changeset	1200
a61af66fc99e Initial load duke parents: diff changeset	1201 call->init_req(TypeFunc::Parms+0, klass_node);
a61af66fc99e Initial load duke parents: diff changeset	1202 if (length != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1203 call->init_req(TypeFunc::Parms+1, length);
a61af66fc99e Initial load duke parents: diff changeset	1204 }
a61af66fc99e Initial load duke parents: diff changeset	1205
a61af66fc99e Initial load duke parents: diff changeset	1206 // Copy debug information and adjust JVMState information, then replace
a61af66fc99e Initial load duke parents: diff changeset	1207 // allocate node with the call
a61af66fc99e Initial load duke parents: diff changeset	1208 copy_call_debug_info((CallNode *) alloc, call);
a61af66fc99e Initial load duke parents: diff changeset	1209 if (!always_slow) {
a61af66fc99e Initial load duke parents: diff changeset	1210 call->set_cnt(PROB_UNLIKELY_MAG(4)); // Same effect as RC_UNCOMMON.
a61af66fc99e Initial load duke parents: diff changeset	1211 }
a61af66fc99e Initial load duke parents: diff changeset	1212 _igvn.hash_delete(alloc);
a61af66fc99e Initial load duke parents: diff changeset	1213 _igvn.subsume_node(alloc, call);
a61af66fc99e Initial load duke parents: diff changeset	1214 transform_later(call);
a61af66fc99e Initial load duke parents: diff changeset	1215
a61af66fc99e Initial load duke parents: diff changeset	1216 // Identify the output projections from the allocate node and
a61af66fc99e Initial load duke parents: diff changeset	1217 // adjust any references to them.
a61af66fc99e Initial load duke parents: diff changeset	1218 // The control and io projections look like:
a61af66fc99e Initial load duke parents: diff changeset	1219 //
a61af66fc99e Initial load duke parents: diff changeset	1220 // v---Proj(ctrl) <-----+ v---CatchProj(ctrl)
a61af66fc99e Initial load duke parents: diff changeset	1221 // Allocate Catch
a61af66fc99e Initial load duke parents: diff changeset	1222 // ^---Proj(io) <-------+ ^---CatchProj(io)
a61af66fc99e Initial load duke parents: diff changeset	1223 //
a61af66fc99e Initial load duke parents: diff changeset	1224 // We are interested in the CatchProj nodes.
a61af66fc99e Initial load duke parents: diff changeset	1225 //
a61af66fc99e Initial load duke parents: diff changeset	1226 extract_call_projections(call);
a61af66fc99e Initial load duke parents: diff changeset	1227
a61af66fc99e Initial load duke parents: diff changeset	1228 // An allocate node has separate memory projections for the uses on the control and i_o paths
a61af66fc99e Initial load duke parents: diff changeset	1229 // Replace uses of the control memory projection with result_phi_rawmem (unless we are only generating a slow call)
a61af66fc99e Initial load duke parents: diff changeset	1230 if (!always_slow && _memproj_fallthrough != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1231 for (DUIterator_Fast imax, i = _memproj_fallthrough->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load duke parents: diff changeset	1232 Node *use = _memproj_fallthrough->fast_out(i);
a61af66fc99e Initial load duke parents: diff changeset	1233 _igvn.hash_delete(use);
a61af66fc99e Initial load duke parents: diff changeset	1234 imax -= replace_input(use, _memproj_fallthrough, result_phi_rawmem);
a61af66fc99e Initial load duke parents: diff changeset	1235 _igvn._worklist.push(use);
a61af66fc99e Initial load duke parents: diff changeset	1236 // back up iterator
a61af66fc99e Initial load duke parents: diff changeset	1237 --i;
a61af66fc99e Initial load duke parents: diff changeset	1238 }
a61af66fc99e Initial load duke parents: diff changeset	1239 }
a61af66fc99e Initial load duke parents: diff changeset	1240 // Now change uses of _memproj_catchall to use _memproj_fallthrough and delete _memproj_catchall so
a61af66fc99e Initial load duke parents: diff changeset	1241 // we end up with a call that has only 1 memory projection
a61af66fc99e Initial load duke parents: diff changeset	1242 if (_memproj_catchall != NULL ) {
a61af66fc99e Initial load duke parents: diff changeset	1243 if (_memproj_fallthrough == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1244 _memproj_fallthrough = new (C, 1) ProjNode(call, TypeFunc::Memory);
a61af66fc99e Initial load duke parents: diff changeset	1245 transform_later(_memproj_fallthrough);
a61af66fc99e Initial load duke parents: diff changeset	1246 }
a61af66fc99e Initial load duke parents: diff changeset	1247 for (DUIterator_Fast imax, i = _memproj_catchall->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load duke parents: diff changeset	1248 Node *use = _memproj_catchall->fast_out(i);
a61af66fc99e Initial load duke parents: diff changeset	1249 _igvn.hash_delete(use);
a61af66fc99e Initial load duke parents: diff changeset	1250 imax -= replace_input(use, _memproj_catchall, _memproj_fallthrough);
a61af66fc99e Initial load duke parents: diff changeset	1251 _igvn._worklist.push(use);
a61af66fc99e Initial load duke parents: diff changeset	1252 // back up iterator
a61af66fc99e Initial load duke parents: diff changeset	1253 --i;
a61af66fc99e Initial load duke parents: diff changeset	1254 }
a61af66fc99e Initial load duke parents: diff changeset	1255 }
a61af66fc99e Initial load duke parents: diff changeset	1256
a61af66fc99e Initial load duke parents: diff changeset	1257 // An allocate node has separate i_o projections for the uses on the control and i_o paths
a61af66fc99e Initial load duke parents: diff changeset	1258 // Replace uses of the control i_o projection with result_phi_i_o (unless we are only generating a slow call)
a61af66fc99e Initial load duke parents: diff changeset	1259 if (_ioproj_fallthrough == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1260 _ioproj_fallthrough = new (C, 1) ProjNode(call, TypeFunc::I_O);
a61af66fc99e Initial load duke parents: diff changeset	1261 transform_later(_ioproj_fallthrough);
a61af66fc99e Initial load duke parents: diff changeset	1262 } else if (!always_slow) {
a61af66fc99e Initial load duke parents: diff changeset	1263 for (DUIterator_Fast imax, i = _ioproj_fallthrough->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load duke parents: diff changeset	1264 Node *use = _ioproj_fallthrough->fast_out(i);
a61af66fc99e Initial load duke parents: diff changeset	1265
a61af66fc99e Initial load duke parents: diff changeset	1266 _igvn.hash_delete(use);
a61af66fc99e Initial load duke parents: diff changeset	1267 imax -= replace_input(use, _ioproj_fallthrough, result_phi_i_o);
a61af66fc99e Initial load duke parents: diff changeset	1268 _igvn._worklist.push(use);
a61af66fc99e Initial load duke parents: diff changeset	1269 // back up iterator
a61af66fc99e Initial load duke parents: diff changeset	1270 --i;
a61af66fc99e Initial load duke parents: diff changeset	1271 }
a61af66fc99e Initial load duke parents: diff changeset	1272 }
a61af66fc99e Initial load duke parents: diff changeset	1273 // Now change uses of _ioproj_catchall to use _ioproj_fallthrough and delete _ioproj_catchall so
a61af66fc99e Initial load duke parents: diff changeset	1274 // we end up with a call that has only 1 control projection
a61af66fc99e Initial load duke parents: diff changeset	1275 if (_ioproj_catchall != NULL ) {
a61af66fc99e Initial load duke parents: diff changeset	1276 for (DUIterator_Fast imax, i = _ioproj_catchall->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load duke parents: diff changeset	1277 Node *use = _ioproj_catchall->fast_out(i);
a61af66fc99e Initial load duke parents: diff changeset	1278 _igvn.hash_delete(use);
a61af66fc99e Initial load duke parents: diff changeset	1279 imax -= replace_input(use, _ioproj_catchall, _ioproj_fallthrough);
a61af66fc99e Initial load duke parents: diff changeset	1280 _igvn._worklist.push(use);
a61af66fc99e Initial load duke parents: diff changeset	1281 // back up iterator
a61af66fc99e Initial load duke parents: diff changeset	1282 --i;
a61af66fc99e Initial load duke parents: diff changeset	1283 }
a61af66fc99e Initial load duke parents: diff changeset	1284 }
a61af66fc99e Initial load duke parents: diff changeset	1285
a61af66fc99e Initial load duke parents: diff changeset	1286 // if we generated only a slow call, we are done
a61af66fc99e Initial load duke parents: diff changeset	1287 if (always_slow)
a61af66fc99e Initial load duke parents: diff changeset	1288 return;
a61af66fc99e Initial load duke parents: diff changeset	1289
a61af66fc99e Initial load duke parents: diff changeset	1290
a61af66fc99e Initial load duke parents: diff changeset	1291 if (_fallthroughcatchproj != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1292 ctrl = _fallthroughcatchproj->clone();
a61af66fc99e Initial load duke parents: diff changeset	1293 transform_later(ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1294 _igvn.hash_delete(_fallthroughcatchproj);
a61af66fc99e Initial load duke parents: diff changeset	1295 _igvn.subsume_node(_fallthroughcatchproj, result_region);
a61af66fc99e Initial load duke parents: diff changeset	1296 } else {
a61af66fc99e Initial load duke parents: diff changeset	1297 ctrl = top();
a61af66fc99e Initial load duke parents: diff changeset	1298 }
a61af66fc99e Initial load duke parents: diff changeset	1299 Node *slow_result;
a61af66fc99e Initial load duke parents: diff changeset	1300 if (_resproj == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1301 // no uses of the allocation result
a61af66fc99e Initial load duke parents: diff changeset	1302 slow_result = top();
a61af66fc99e Initial load duke parents: diff changeset	1303 } else {
a61af66fc99e Initial load duke parents: diff changeset	1304 slow_result = _resproj->clone();
a61af66fc99e Initial load duke parents: diff changeset	1305 transform_later(slow_result);
a61af66fc99e Initial load duke parents: diff changeset	1306 _igvn.hash_delete(_resproj);
a61af66fc99e Initial load duke parents: diff changeset	1307 _igvn.subsume_node(_resproj, result_phi_rawoop);
a61af66fc99e Initial load duke parents: diff changeset	1308 }
a61af66fc99e Initial load duke parents: diff changeset	1309
a61af66fc99e Initial load duke parents: diff changeset	1310 // Plug slow-path into result merge point
a61af66fc99e Initial load duke parents: diff changeset	1311 result_region ->init_req( slow_result_path, ctrl );
a61af66fc99e Initial load duke parents: diff changeset	1312 result_phi_rawoop->init_req( slow_result_path, slow_result);
a61af66fc99e Initial load duke parents: diff changeset	1313 result_phi_rawmem->init_req( slow_result_path, _memproj_fallthrough );
a61af66fc99e Initial load duke parents: diff changeset	1314 transform_later(result_region);
a61af66fc99e Initial load duke parents: diff changeset	1315 transform_later(result_phi_rawoop);
a61af66fc99e Initial load duke parents: diff changeset	1316 transform_later(result_phi_rawmem);
a61af66fc99e Initial load duke parents: diff changeset	1317 transform_later(result_phi_i_o);
a61af66fc99e Initial load duke parents: diff changeset	1318 // This completes all paths into the result merge point
a61af66fc99e Initial load duke parents: diff changeset	1319 }
a61af66fc99e Initial load duke parents: diff changeset	1320
a61af66fc99e Initial load duke parents: diff changeset	1321
a61af66fc99e Initial load duke parents: diff changeset	1322 // Helper for PhaseMacroExpand::expand_allocate_common.
a61af66fc99e Initial load duke parents: diff changeset	1323 // Initializes the newly-allocated storage.
a61af66fc99e Initial load duke parents: diff changeset	1324 Node*
a61af66fc99e Initial load duke parents: diff changeset	1325 PhaseMacroExpand::initialize_object(AllocateNode* alloc,
a61af66fc99e Initial load duke parents: diff changeset	1326 Node* control, Node* rawmem, Node* object,
a61af66fc99e Initial load duke parents: diff changeset	1327 Node* klass_node, Node* length,
a61af66fc99e Initial load duke parents: diff changeset	1328 Node* size_in_bytes) {
a61af66fc99e Initial load duke parents: diff changeset	1329 InitializeNode* init = alloc->initialization();
a61af66fc99e Initial load duke parents: diff changeset	1330 // Store the klass & mark bits
a61af66fc99e Initial load duke parents: diff changeset	1331 Node* mark_node = NULL;
a61af66fc99e Initial load duke parents: diff changeset	1332 // For now only enable fast locking for non-array types
a61af66fc99e Initial load duke parents: diff changeset	1333 if (UseBiasedLocking && (length == NULL)) {
a61af66fc99e Initial load duke parents: diff changeset	1334 mark_node = make_load(NULL, rawmem, klass_node, Klass::prototype_header_offset_in_bytes() + sizeof(oopDesc), TypeRawPtr::BOTTOM, T_ADDRESS);
a61af66fc99e Initial load duke parents: diff changeset	1335 } else {
a61af66fc99e Initial load duke parents: diff changeset	1336 mark_node = makecon(TypeRawPtr::make((address)markOopDesc::prototype()));
a61af66fc99e Initial load duke parents: diff changeset	1337 }
a61af66fc99e Initial load duke parents: diff changeset	1338 rawmem = make_store(control, rawmem, object, oopDesc::mark_offset_in_bytes(), mark_node, T_ADDRESS);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	1339
0 a61af66fc99e Initial load duke parents: diff changeset	1340 rawmem = make_store(control, rawmem, object, oopDesc::klass_offset_in_bytes(), klass_node, T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	1341 int header_size = alloc->minimum_header_size(); // conservatively small
a61af66fc99e Initial load duke parents: diff changeset	1342
a61af66fc99e Initial load duke parents: diff changeset	1343 // Array length
a61af66fc99e Initial load duke parents: diff changeset	1344 if (length != NULL) { // Arrays need length field
a61af66fc99e Initial load duke parents: diff changeset	1345 rawmem = make_store(control, rawmem, object, arrayOopDesc::length_offset_in_bytes(), length, T_INT);
a61af66fc99e Initial load duke parents: diff changeset	1346 // conservatively small header size:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	1347 header_size = arrayOopDesc::base_offset_in_bytes(T_BYTE);
0 a61af66fc99e Initial load duke parents: diff changeset	1348 ciKlass* k = _igvn.type(klass_node)->is_klassptr()->klass();
a61af66fc99e Initial load duke parents: diff changeset	1349 if (k->is_array_klass()) // we know the exact header size in most cases:
a61af66fc99e Initial load duke parents: diff changeset	1350 header_size = Klass::layout_helper_header_size(k->layout_helper());
a61af66fc99e Initial load duke parents: diff changeset	1351 }
a61af66fc99e Initial load duke parents: diff changeset	1352
a61af66fc99e Initial load duke parents: diff changeset	1353 // Clear the object body, if necessary.
a61af66fc99e Initial load duke parents: diff changeset	1354 if (init == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	1355 // The init has somehow disappeared; be cautious and clear everything.
a61af66fc99e Initial load duke parents: diff changeset	1356 //
a61af66fc99e Initial load duke parents: diff changeset	1357 // This can happen if a node is allocated but an uncommon trap occurs
a61af66fc99e Initial load duke parents: diff changeset	1358 // immediately. In this case, the Initialize gets associated with the
a61af66fc99e Initial load duke parents: diff changeset	1359 // trap, and may be placed in a different (outer) loop, if the Allocate
a61af66fc99e Initial load duke parents: diff changeset	1360 // is in a loop. If (this is rare) the inner loop gets unrolled, then
a61af66fc99e Initial load duke parents: diff changeset	1361 // there can be two Allocates to one Initialize. The answer in all these
a61af66fc99e Initial load duke parents: diff changeset	1362 // edge cases is safety first. It is always safe to clear immediately
a61af66fc99e Initial load duke parents: diff changeset	1363 // within an Allocate, and then (maybe or maybe not) clear some more later.
a61af66fc99e Initial load duke parents: diff changeset	1364 if (!ZeroTLAB)
a61af66fc99e Initial load duke parents: diff changeset	1365 rawmem = ClearArrayNode::clear_memory(control, rawmem, object,
a61af66fc99e Initial load duke parents: diff changeset	1366 header_size, size_in_bytes,
a61af66fc99e Initial load duke parents: diff changeset	1367 &_igvn);
a61af66fc99e Initial load duke parents: diff changeset	1368 } else {
a61af66fc99e Initial load duke parents: diff changeset	1369 if (!init->is_complete()) {
a61af66fc99e Initial load duke parents: diff changeset	1370 // Try to win by zeroing only what the init does not store.
a61af66fc99e Initial load duke parents: diff changeset	1371 // We can also try to do some peephole optimizations,
a61af66fc99e Initial load duke parents: diff changeset	1372 // such as combining some adjacent subword stores.
a61af66fc99e Initial load duke parents: diff changeset	1373 rawmem = init->complete_stores(control, rawmem, object,
a61af66fc99e Initial load duke parents: diff changeset	1374 header_size, size_in_bytes, &_igvn);
a61af66fc99e Initial load duke parents: diff changeset	1375 }
a61af66fc99e Initial load duke parents: diff changeset	1376 // We have no more use for this link, since the AllocateNode goes away:
a61af66fc99e Initial load duke parents: diff changeset	1377 init->set_req(InitializeNode::RawAddress, top());
a61af66fc99e Initial load duke parents: diff changeset	1378 // (If we keep the link, it just confuses the register allocator,
a61af66fc99e Initial load duke parents: diff changeset	1379 // who thinks he sees a real use of the address by the membar.)
a61af66fc99e Initial load duke parents: diff changeset	1380 }
a61af66fc99e Initial load duke parents: diff changeset	1381
a61af66fc99e Initial load duke parents: diff changeset	1382 return rawmem;
a61af66fc99e Initial load duke parents: diff changeset	1383 }
a61af66fc99e Initial load duke parents: diff changeset	1384
a61af66fc99e Initial load duke parents: diff changeset	1385 // Generate prefetch instructions for next allocations.
a61af66fc99e Initial load duke parents: diff changeset	1386 Node* PhaseMacroExpand::prefetch_allocation(Node* i_o, Node*& needgc_false,
a61af66fc99e Initial load duke parents: diff changeset	1387 Node*& contended_phi_rawmem,
a61af66fc99e Initial load duke parents: diff changeset	1388 Node* old_eden_top, Node* new_eden_top,
a61af66fc99e Initial load duke parents: diff changeset	1389 Node* length) {
a61af66fc99e Initial load duke parents: diff changeset	1390 if( UseTLAB && AllocatePrefetchStyle == 2 ) {
a61af66fc99e Initial load duke parents: diff changeset	1391 // Generate prefetch allocation with watermark check.
a61af66fc99e Initial load duke parents: diff changeset	1392 // As an allocation hits the watermark, we will prefetch starting
a61af66fc99e Initial load duke parents: diff changeset	1393 // at a "distance" away from watermark.
a61af66fc99e Initial load duke parents: diff changeset	1394 enum { fall_in_path = 1, pf_path = 2 };
a61af66fc99e Initial load duke parents: diff changeset	1395
a61af66fc99e Initial load duke parents: diff changeset	1396 Node *pf_region = new (C, 3) RegionNode(3);
a61af66fc99e Initial load duke parents: diff changeset	1397 Node *pf_phi_rawmem = new (C, 3) PhiNode( pf_region, Type::MEMORY,
a61af66fc99e Initial load duke parents: diff changeset	1398 TypeRawPtr::BOTTOM );
a61af66fc99e Initial load duke parents: diff changeset	1399 // I/O is used for Prefetch
a61af66fc99e Initial load duke parents: diff changeset	1400 Node *pf_phi_abio = new (C, 3) PhiNode( pf_region, Type::ABIO );
a61af66fc99e Initial load duke parents: diff changeset	1401
a61af66fc99e Initial load duke parents: diff changeset	1402 Node *thread = new (C, 1) ThreadLocalNode();
a61af66fc99e Initial load duke parents: diff changeset	1403 transform_later(thread);
a61af66fc99e Initial load duke parents: diff changeset	1404
a61af66fc99e Initial load duke parents: diff changeset	1405 Node eden_pf_adr = new (C, 4) AddPNode( top()/not oop*/, thread,
a61af66fc99e Initial load duke parents: diff changeset	1406 _igvn.MakeConX(in_bytes(JavaThread::tlab_pf_top_offset())) );
a61af66fc99e Initial load duke parents: diff changeset	1407 transform_later(eden_pf_adr);
a61af66fc99e Initial load duke parents: diff changeset	1408
a61af66fc99e Initial load duke parents: diff changeset	1409 Node *old_pf_wm = new (C, 3) LoadPNode( needgc_false,
a61af66fc99e Initial load duke parents: diff changeset	1410 contended_phi_rawmem, eden_pf_adr,
a61af66fc99e Initial load duke parents: diff changeset	1411 TypeRawPtr::BOTTOM, TypeRawPtr::BOTTOM );
a61af66fc99e Initial load duke parents: diff changeset	1412 transform_later(old_pf_wm);
a61af66fc99e Initial load duke parents: diff changeset	1413
a61af66fc99e Initial load duke parents: diff changeset	1414 // check against new_eden_top
a61af66fc99e Initial load duke parents: diff changeset	1415 Node *need_pf_cmp = new (C, 3) CmpPNode( new_eden_top, old_pf_wm );
a61af66fc99e Initial load duke parents: diff changeset	1416 transform_later(need_pf_cmp);
a61af66fc99e Initial load duke parents: diff changeset	1417 Node *need_pf_bol = new (C, 2) BoolNode( need_pf_cmp, BoolTest::ge );
a61af66fc99e Initial load duke parents: diff changeset	1418 transform_later(need_pf_bol);
a61af66fc99e Initial load duke parents: diff changeset	1419 IfNode *need_pf_iff = new (C, 2) IfNode( needgc_false, need_pf_bol,
a61af66fc99e Initial load duke parents: diff changeset	1420 PROB_UNLIKELY_MAG(4), COUNT_UNKNOWN );
a61af66fc99e Initial load duke parents: diff changeset	1421 transform_later(need_pf_iff);
a61af66fc99e Initial load duke parents: diff changeset	1422
a61af66fc99e Initial load duke parents: diff changeset	1423 // true node, add prefetchdistance
a61af66fc99e Initial load duke parents: diff changeset	1424 Node *need_pf_true = new (C, 1) IfTrueNode( need_pf_iff );
a61af66fc99e Initial load duke parents: diff changeset	1425 transform_later(need_pf_true);
a61af66fc99e Initial load duke parents: diff changeset	1426
a61af66fc99e Initial load duke parents: diff changeset	1427 Node *need_pf_false = new (C, 1) IfFalseNode( need_pf_iff );
a61af66fc99e Initial load duke parents: diff changeset	1428 transform_later(need_pf_false);
a61af66fc99e Initial load duke parents: diff changeset	1429
a61af66fc99e Initial load duke parents: diff changeset	1430 Node *new_pf_wmt = new (C, 4) AddPNode( top(), old_pf_wm,
a61af66fc99e Initial load duke parents: diff changeset	1431 _igvn.MakeConX(AllocatePrefetchDistance) );
a61af66fc99e Initial load duke parents: diff changeset	1432 transform_later(new_pf_wmt );
a61af66fc99e Initial load duke parents: diff changeset	1433 new_pf_wmt->set_req(0, need_pf_true);
a61af66fc99e Initial load duke parents: diff changeset	1434
a61af66fc99e Initial load duke parents: diff changeset	1435 Node *store_new_wmt = new (C, 4) StorePNode( need_pf_true,
a61af66fc99e Initial load duke parents: diff changeset	1436 contended_phi_rawmem, eden_pf_adr,
a61af66fc99e Initial load duke parents: diff changeset	1437 TypeRawPtr::BOTTOM, new_pf_wmt );
a61af66fc99e Initial load duke parents: diff changeset	1438 transform_later(store_new_wmt);
a61af66fc99e Initial load duke parents: diff changeset	1439
a61af66fc99e Initial load duke parents: diff changeset	1440 // adding prefetches
a61af66fc99e Initial load duke parents: diff changeset	1441 pf_phi_abio->init_req( fall_in_path, i_o );
a61af66fc99e Initial load duke parents: diff changeset	1442
a61af66fc99e Initial load duke parents: diff changeset	1443 Node *prefetch_adr;
a61af66fc99e Initial load duke parents: diff changeset	1444 Node *prefetch;
a61af66fc99e Initial load duke parents: diff changeset	1445 uint lines = AllocatePrefetchDistance / AllocatePrefetchStepSize;
a61af66fc99e Initial load duke parents: diff changeset	1446 uint step_size = AllocatePrefetchStepSize;
a61af66fc99e Initial load duke parents: diff changeset	1447 uint distance = 0;
a61af66fc99e Initial load duke parents: diff changeset	1448
a61af66fc99e Initial load duke parents: diff changeset	1449 for ( uint i = 0; i < lines; i++ ) {
a61af66fc99e Initial load duke parents: diff changeset	1450 prefetch_adr = new (C, 4) AddPNode( old_pf_wm, new_pf_wmt,
a61af66fc99e Initial load duke parents: diff changeset	1451 _igvn.MakeConX(distance) );
a61af66fc99e Initial load duke parents: diff changeset	1452 transform_later(prefetch_adr);
a61af66fc99e Initial load duke parents: diff changeset	1453 prefetch = new (C, 3) PrefetchWriteNode( i_o, prefetch_adr );
a61af66fc99e Initial load duke parents: diff changeset	1454 transform_later(prefetch);
a61af66fc99e Initial load duke parents: diff changeset	1455 distance += step_size;
a61af66fc99e Initial load duke parents: diff changeset	1456 i_o = prefetch;
a61af66fc99e Initial load duke parents: diff changeset	1457 }
a61af66fc99e Initial load duke parents: diff changeset	1458 pf_phi_abio->set_req( pf_path, i_o );
a61af66fc99e Initial load duke parents: diff changeset	1459
a61af66fc99e Initial load duke parents: diff changeset	1460 pf_region->init_req( fall_in_path, need_pf_false );
a61af66fc99e Initial load duke parents: diff changeset	1461 pf_region->init_req( pf_path, need_pf_true );
a61af66fc99e Initial load duke parents: diff changeset	1462
a61af66fc99e Initial load duke parents: diff changeset	1463 pf_phi_rawmem->init_req( fall_in_path, contended_phi_rawmem );
a61af66fc99e Initial load duke parents: diff changeset	1464 pf_phi_rawmem->init_req( pf_path, store_new_wmt );
a61af66fc99e Initial load duke parents: diff changeset	1465
a61af66fc99e Initial load duke parents: diff changeset	1466 transform_later(pf_region);
a61af66fc99e Initial load duke parents: diff changeset	1467 transform_later(pf_phi_rawmem);
a61af66fc99e Initial load duke parents: diff changeset	1468 transform_later(pf_phi_abio);
a61af66fc99e Initial load duke parents: diff changeset	1469
a61af66fc99e Initial load duke parents: diff changeset	1470 needgc_false = pf_region;
a61af66fc99e Initial load duke parents: diff changeset	1471 contended_phi_rawmem = pf_phi_rawmem;
a61af66fc99e Initial load duke parents: diff changeset	1472 i_o = pf_phi_abio;
a61af66fc99e Initial load duke parents: diff changeset	1473 } else if( AllocatePrefetchStyle > 0 ) {
a61af66fc99e Initial load duke parents: diff changeset	1474 // Insert a prefetch for each allocation only on the fast-path
a61af66fc99e Initial load duke parents: diff changeset	1475 Node *prefetch_adr;
a61af66fc99e Initial load duke parents: diff changeset	1476 Node *prefetch;
a61af66fc99e Initial load duke parents: diff changeset	1477 // Generate several prefetch instructions only for arrays.
a61af66fc99e Initial load duke parents: diff changeset	1478 uint lines = (length != NULL) ? AllocatePrefetchLines : 1;
a61af66fc99e Initial load duke parents: diff changeset	1479 uint step_size = AllocatePrefetchStepSize;
a61af66fc99e Initial load duke parents: diff changeset	1480 uint distance = AllocatePrefetchDistance;
a61af66fc99e Initial load duke parents: diff changeset	1481 for ( uint i = 0; i < lines; i++ ) {
a61af66fc99e Initial load duke parents: diff changeset	1482 prefetch_adr = new (C, 4) AddPNode( old_eden_top, new_eden_top,
a61af66fc99e Initial load duke parents: diff changeset	1483 _igvn.MakeConX(distance) );
a61af66fc99e Initial load duke parents: diff changeset	1484 transform_later(prefetch_adr);
a61af66fc99e Initial load duke parents: diff changeset	1485 prefetch = new (C, 3) PrefetchWriteNode( i_o, prefetch_adr );
a61af66fc99e Initial load duke parents: diff changeset	1486 // Do not let it float too high, since if eden_top == eden_end,
a61af66fc99e Initial load duke parents: diff changeset	1487 // both might be null.
a61af66fc99e Initial load duke parents: diff changeset	1488 if( i == 0 ) { // Set control for first prefetch, next follows it
a61af66fc99e Initial load duke parents: diff changeset	1489 prefetch->init_req(0, needgc_false);
a61af66fc99e Initial load duke parents: diff changeset	1490 }
a61af66fc99e Initial load duke parents: diff changeset	1491 transform_later(prefetch);
a61af66fc99e Initial load duke parents: diff changeset	1492 distance += step_size;
a61af66fc99e Initial load duke parents: diff changeset	1493 i_o = prefetch;
a61af66fc99e Initial load duke parents: diff changeset	1494 }
a61af66fc99e Initial load duke parents: diff changeset	1495 }
a61af66fc99e Initial load duke parents: diff changeset	1496 return i_o;
a61af66fc99e Initial load duke parents: diff changeset	1497 }
a61af66fc99e Initial load duke parents: diff changeset	1498
a61af66fc99e Initial load duke parents: diff changeset	1499
a61af66fc99e Initial load duke parents: diff changeset	1500 void PhaseMacroExpand::expand_allocate(AllocateNode *alloc) {
a61af66fc99e Initial load duke parents: diff changeset	1501 expand_allocate_common(alloc, NULL,
a61af66fc99e Initial load duke parents: diff changeset	1502 OptoRuntime::new_instance_Type(),
a61af66fc99e Initial load duke parents: diff changeset	1503 OptoRuntime::new_instance_Java());
a61af66fc99e Initial load duke parents: diff changeset	1504 }
a61af66fc99e Initial load duke parents: diff changeset	1505
a61af66fc99e Initial load duke parents: diff changeset	1506 void PhaseMacroExpand::expand_allocate_array(AllocateArrayNode *alloc) {
a61af66fc99e Initial load duke parents: diff changeset	1507 Node* length = alloc->in(AllocateNode::ALength);
a61af66fc99e Initial load duke parents: diff changeset	1508 expand_allocate_common(alloc, length,
a61af66fc99e Initial load duke parents: diff changeset	1509 OptoRuntime::new_array_Type(),
a61af66fc99e Initial load duke parents: diff changeset	1510 OptoRuntime::new_array_Java());
a61af66fc99e Initial load duke parents: diff changeset	1511 }
a61af66fc99e Initial load duke parents: diff changeset	1512
a61af66fc99e Initial load duke parents: diff changeset	1513
a61af66fc99e Initial load duke parents: diff changeset	1514 // we have determined that this lock/unlock can be eliminated, we simply
a61af66fc99e Initial load duke parents: diff changeset	1515 // eliminate the node without expanding it.
a61af66fc99e Initial load duke parents: diff changeset	1516 //
a61af66fc99e Initial load duke parents: diff changeset	1517 // Note: The membar's associated with the lock/unlock are currently not
a61af66fc99e Initial load duke parents: diff changeset	1518 // eliminated. This should be investigated as a future enhancement.
a61af66fc99e Initial load duke parents: diff changeset	1519 //
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1520 bool PhaseMacroExpand::eliminate_locking_node(AbstractLockNode *alock) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1521
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1522 if (!alock->is_eliminated()) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1523 return false;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1524 }
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1525 if (alock->is_Lock() && !alock->is_coarsened()) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1526 // Create new "eliminated" BoxLock node and use it
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1527 // in monitor debug info for the same object.
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1528 BoxLockNode* oldbox = alock->box_node()->as_BoxLock();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1529 Node* obj = alock->obj_node();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1530 if (!oldbox->is_eliminated()) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1531 BoxLockNode* newbox = oldbox->clone()->as_BoxLock();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1532 newbox->set_eliminated();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1533 transform_later(newbox);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1534 // Replace old box node with new box for all users
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1535 // of the same object.
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1536 for (uint i = 0; i < oldbox->outcnt();) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1537
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1538 bool next_edge = true;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1539 Node* u = oldbox->raw_out(i);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1540 if (u == alock) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1541 i++;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1542 continue; // It will be removed below
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1543 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1544 if (u->is_Lock() &&
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1545 u->as_Lock()->obj_node() == obj &&
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1546 // oldbox could be referenced in debug info also
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1547 u->as_Lock()->box_node() == oldbox) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1548 assert(u->as_Lock()->is_eliminated(), "sanity");
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1549 _igvn.hash_delete(u);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1550 u->set_req(TypeFunc::Parms + 1, newbox);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1551 next_edge = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1552 #ifdef ASSERT
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1553 } else if (u->is_Unlock() && u->as_Unlock()->obj_node() == obj) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1554 assert(u->as_Unlock()->is_eliminated(), "sanity");
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1555 #endif
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1556 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1557 // Replace old box in monitor debug info.
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1558 if (u->is_SafePoint() && u->as_SafePoint()->jvms()) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1559 SafePointNode* sfn = u->as_SafePoint();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1560 JVMState* youngest_jvms = sfn->jvms();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1561 int max_depth = youngest_jvms->depth();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1562 for (int depth = 1; depth <= max_depth; depth++) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1563 JVMState* jvms = youngest_jvms->of_depth(depth);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1564 int num_mon = jvms->nof_monitors();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1565 // Loop over monitors
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1566 for (int idx = 0; idx < num_mon; idx++) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1567 Node* obj_node = sfn->monitor_obj(jvms, idx);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1568 Node* box_node = sfn->monitor_box(jvms, idx);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1569 if (box_node == oldbox && obj_node == obj) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1570 int j = jvms->monitor_box_offset(idx);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1571 _igvn.hash_delete(u);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1572 u->set_req(j, newbox);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1573 next_edge = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1574 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1575 } // for (int idx = 0;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1576 } // for (int depth = 1;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1577 } // if (u->is_SafePoint()
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1578 if (next_edge) i++;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1579 } // for (uint i = 0; i < oldbox->outcnt();)
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1580 } // if (!oldbox->is_eliminated())
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1581 } // if (alock->is_Lock() && !lock->is_coarsened())
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1582
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1583 #ifndef PRODUCT
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1584 if (PrintEliminateLocks) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1585 if (alock->is_Lock()) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1586 tty->print_cr("++++ Eliminating: %d Lock", alock->_idx);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1587 } else {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1588 tty->print_cr("++++ Eliminating: %d Unlock", alock->_idx);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1589 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1590 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1591 #endif
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1592
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1593 Node* mem = alock->in(TypeFunc::Memory);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1594 Node* ctrl = alock->in(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1595
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1596 extract_call_projections(alock);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1597 // There are 2 projections from the lock. The lock node will
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1598 // be deleted when its last use is subsumed below.
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1599 assert(alock->outcnt() == 2 &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1600 _fallthroughproj != NULL &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1601 _memproj_fallthrough != NULL,
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1602 "Unexpected projections from Lock/Unlock");
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1603
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1604 Node* fallthroughproj = _fallthroughproj;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1605 Node* memproj_fallthrough = _memproj_fallthrough;
0 a61af66fc99e Initial load duke parents: diff changeset	1606
a61af66fc99e Initial load duke parents: diff changeset	1607 // The memory projection from a lock/unlock is RawMem
a61af66fc99e Initial load duke parents: diff changeset	1608 // The input to a Lock is merged memory, so extract its RawMem input
a61af66fc99e Initial load duke parents: diff changeset	1609 // (unless the MergeMem has been optimized away.)
a61af66fc99e Initial load duke parents: diff changeset	1610 if (alock->is_Lock()) {
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1611 // Seach for MemBarAcquire node and delete it also.
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1612 MemBarNode* membar = fallthroughproj->unique_ctrl_out()->as_MemBar();
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1613 assert(membar != NULL && membar->Opcode() == Op_MemBarAcquire, "");
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1614 Node* ctrlproj = membar->proj_out(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1615 Node* memproj = membar->proj_out(TypeFunc::Memory);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1616 _igvn.hash_delete(ctrlproj);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1617 _igvn.subsume_node(ctrlproj, fallthroughproj);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1618 _igvn.hash_delete(memproj);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1619 _igvn.subsume_node(memproj, memproj_fallthrough);
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1620
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1621 // Delete FastLock node also if this Lock node is unique user
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1622 // (a loop peeling may clone a Lock node).
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1623 Node* flock = alock->as_Lock()->fastlock_node();
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1624 if (flock->outcnt() == 1) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1625 assert(flock->unique_out() == alock, "sanity");
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1626 _igvn.hash_delete(flock);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1627 _igvn.subsume_node(flock, top());
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1628 }
0 a61af66fc99e Initial load duke parents: diff changeset	1629 }
a61af66fc99e Initial load duke parents: diff changeset	1630
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1631 // Seach for MemBarRelease node and delete it also.
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1632 if (alock->is_Unlock() && ctrl != NULL && ctrl->is_Proj() &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1633 ctrl->in(0)->is_MemBar()) {
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1634 MemBarNode* membar = ctrl->in(0)->as_MemBar();
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1635 assert(membar->Opcode() == Op_MemBarRelease &&
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1636 mem->is_Proj() && membar == mem->in(0), "");
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1637 _igvn.hash_delete(fallthroughproj);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1638 _igvn.subsume_node(fallthroughproj, ctrl);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1639 _igvn.hash_delete(memproj_fallthrough);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1640 _igvn.subsume_node(memproj_fallthrough, mem);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1641 fallthroughproj = ctrl;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1642 memproj_fallthrough = mem;
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1643 ctrl = membar->in(TypeFunc::Control);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1644 mem = membar->in(TypeFunc::Memory);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1645 }
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1646
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1647 _igvn.hash_delete(fallthroughproj);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1648 _igvn.subsume_node(fallthroughproj, ctrl);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1649 _igvn.hash_delete(memproj_fallthrough);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1650 _igvn.subsume_node(memproj_fallthrough, mem);
6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1651 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	1652 }
a61af66fc99e Initial load duke parents: diff changeset	1653
a61af66fc99e Initial load duke parents: diff changeset	1654
a61af66fc99e Initial load duke parents: diff changeset	1655 //------------------------------expand_lock_node----------------------
a61af66fc99e Initial load duke parents: diff changeset	1656 void PhaseMacroExpand::expand_lock_node(LockNode *lock) {
a61af66fc99e Initial load duke parents: diff changeset	1657
a61af66fc99e Initial load duke parents: diff changeset	1658 Node* ctrl = lock->in(TypeFunc::Control);
a61af66fc99e Initial load duke parents: diff changeset	1659 Node* mem = lock->in(TypeFunc::Memory);
a61af66fc99e Initial load duke parents: diff changeset	1660 Node* obj = lock->obj_node();
a61af66fc99e Initial load duke parents: diff changeset	1661 Node* box = lock->box_node();
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1662 Node* flock = lock->fastlock_node();
0 a61af66fc99e Initial load duke parents: diff changeset	1663
a61af66fc99e Initial load duke parents: diff changeset	1664 // Make the merge point
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1665 Node *region;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1666 Node *mem_phi;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1667 Node *slow_path;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1668
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1669 if (UseOptoBiasInlining) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1670 /*
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1671 * See the full descrition in MacroAssembler::biased_locking_enter().
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1672 *
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1673 * if( (mark_word & biased_lock_mask) == biased_lock_pattern ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1674 * // The object is biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1675 * proto_node = klass->prototype_header;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1676 * o_node = thread \| proto_node;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1677 * x_node = o_node ^ mark_word;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1678 * if( (x_node & ~age_mask) == 0 ) { // Biased to the current thread ?
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1679 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1680 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1681 * if( (x_node & biased_lock_mask) != 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1682 * // The klass's prototype header is no longer biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1683 * cas(&mark_word, mark_word, proto_node)
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1684 * goto cas_lock;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1685 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1686 * // The klass's prototype header is still biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1687 * if( (x_node & epoch_mask) != 0 ) { // Expired epoch?
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1688 * old = mark_word;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1689 * new = o_node;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1690 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1691 * // Different thread or anonymous biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1692 * old = mark_word & (epoch_mask \| age_mask \| biased_lock_mask);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1693 * new = thread \| old;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1694 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1695 * // Try to rebias.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1696 * if( cas(&mark_word, old, new) == 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1697 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1698 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1699 * goto slow_path; // Failed.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1700 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1701 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1702 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1703 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1704 * // The object is not biased.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1705 * cas_lock:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1706 * if( FastLock(obj) == 0 ) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1707 * // Done.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1708 * } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1709 * slow_path:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1710 * OptoRuntime::complete_monitor_locking_Java(obj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1711 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1712 * }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1713 */
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1714
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1715 region = new (C, 5) RegionNode(5);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1716 // create a Phi for the memory state
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1717 mem_phi = new (C, 5) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1718
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1719 Node* fast_lock_region = new (C, 3) RegionNode(3);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1720 Node* fast_lock_mem_phi = new (C, 3) PhiNode( fast_lock_region, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1721
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1722 // First, check mark word for the biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1723 Node* mark_node = make_load(ctrl, mem, obj, oopDesc::mark_offset_in_bytes(), TypeX_X, TypeX_X->basic_type());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1724
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1725 // Get fast path - mark word has the biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1726 ctrl = opt_bits_test(ctrl, fast_lock_region, 1, mark_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1727 markOopDesc::biased_lock_mask_in_place,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1728 markOopDesc::biased_lock_pattern, true);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1729 // fast_lock_region->in(1) is set to slow path.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1730 fast_lock_mem_phi->init_req(1, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1731
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1732 // Now check that the lock is biased to the current thread and has
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1733 // the same epoch and bias as Klass::_prototype_header.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1734
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1735 // Special-case a fresh allocation to avoid building nodes:
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1736 Node* klass_node = AllocateNode::Ideal_klass(obj, &_igvn);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1737 if (klass_node == NULL) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1738 Node* k_adr = basic_plus_adr(obj, oopDesc::klass_offset_in_bytes());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1739 klass_node = transform_later( LoadKlassNode::make(_igvn, mem, k_adr, _igvn.type(k_adr)->is_ptr()) );
490 dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1740 #ifdef _LP64
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1741 if (UseCompressedOops && klass_node->is_DecodeN()) {
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1742 assert(klass_node->in(1)->Opcode() == Op_LoadNKlass, "sanity");
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1743 klass_node->in(1)->init_req(0, ctrl);
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1744 } else
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1745 #endif
dd70dd4c91de 6782820: Server VM fails with "unhandled implicit exception in compiled code" kvn parents: 460 diff changeset	1746 klass_node->init_req(0, ctrl);
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1747 }
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1748 Node *proto_node = make_load(ctrl, mem, klass_node, Klass::prototype_header_offset_in_bytes() + sizeof(oopDesc), TypeX_X, TypeX_X->basic_type());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1749
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1750 Node* thread = transform_later(new (C, 1) ThreadLocalNode());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1751 Node* cast_thread = transform_later(new (C, 2) CastP2XNode(ctrl, thread));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1752 Node* o_node = transform_later(new (C, 3) OrXNode(cast_thread, proto_node));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1753 Node* x_node = transform_later(new (C, 3) XorXNode(o_node, mark_node));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1754
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1755 // Get slow path - mark word does NOT match the value.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1756 Node* not_biased_ctrl = opt_bits_test(ctrl, region, 3, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1757 (~markOopDesc::age_mask_in_place), 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1758 // region->in(3) is set to fast path - the object is biased to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1759 mem_phi->init_req(3, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1760
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1761
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1762 // Mark word does NOT match the value (thread \| Klass::_prototype_header).
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1763
0 a61af66fc99e Initial load duke parents: diff changeset	1764
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1765 // First, check biased pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1766 // Get fast path - _prototype_header has the same biased lock pattern.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1767 ctrl = opt_bits_test(not_biased_ctrl, fast_lock_region, 2, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1768 markOopDesc::biased_lock_mask_in_place, 0, true);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1769
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1770 not_biased_ctrl = fast_lock_region->in(2); // Slow path
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1771 // fast_lock_region->in(2) - the prototype header is no longer biased
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1772 // and we have to revoke the bias on this object.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1773 // We are going to try to reset the mark of this object to the prototype
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1774 // value and fall through to the CAS-based locking scheme.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1775 Node* adr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1776 Node* cas = new (C, 5) StoreXConditionalNode(not_biased_ctrl, mem, adr,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1777 proto_node, mark_node);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1778 transform_later(cas);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1779 Node* proj = transform_later( new (C, 1) SCMemProjNode(cas));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1780 fast_lock_mem_phi->init_req(2, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1781
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1782
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1783 // Second, check epoch bits.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1784 Node* rebiased_region = new (C, 3) RegionNode(3);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1785 Node* old_phi = new (C, 3) PhiNode( rebiased_region, TypeX_X);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1786 Node* new_phi = new (C, 3) PhiNode( rebiased_region, TypeX_X);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1787
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1788 // Get slow path - mark word does NOT match epoch bits.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1789 Node* epoch_ctrl = opt_bits_test(ctrl, rebiased_region, 1, x_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1790 markOopDesc::epoch_mask_in_place, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1791 // The epoch of the current bias is not valid, attempt to rebias the object
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1792 // toward the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1793 rebiased_region->init_req(2, epoch_ctrl);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1794 old_phi->init_req(2, mark_node);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1795 new_phi->init_req(2, o_node);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1796
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1797 // rebiased_region->in(1) is set to fast path.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1798 // The epoch of the current bias is still valid but we know
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1799 // nothing about the owner; it might be set or it might be clear.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1800 Node* cmask = MakeConX(markOopDesc::biased_lock_mask_in_place \|
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1801 markOopDesc::age_mask_in_place \|
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1802 markOopDesc::epoch_mask_in_place);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1803 Node* old = transform_later(new (C, 3) AndXNode(mark_node, cmask));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1804 cast_thread = transform_later(new (C, 2) CastP2XNode(ctrl, thread));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1805 Node* new_mark = transform_later(new (C, 3) OrXNode(cast_thread, old));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1806 old_phi->init_req(1, old);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1807 new_phi->init_req(1, new_mark);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1808
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1809 transform_later(rebiased_region);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1810 transform_later(old_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1811 transform_later(new_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1812
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1813 // Try to acquire the bias of the object using an atomic operation.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1814 // If this fails we will go in to the runtime to revoke the object's bias.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1815 cas = new (C, 5) StoreXConditionalNode(rebiased_region, mem, adr,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1816 new_phi, old_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1817 transform_later(cas);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1818 proj = transform_later( new (C, 1) SCMemProjNode(cas));
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1819
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1820 // Get slow path - Failed to CAS.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1821 not_biased_ctrl = opt_bits_test(rebiased_region, region, 4, cas, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1822 mem_phi->init_req(4, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1823 // region->in(4) is set to fast path - the object is rebiased to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1824
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1825 // Failed to CAS.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1826 slow_path = new (C, 3) RegionNode(3);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1827 Node *slow_mem = new (C, 3) PhiNode( slow_path, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1828
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1829 slow_path->init_req(1, not_biased_ctrl); // Capture slow-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1830 slow_mem->init_req(1, proj);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1831
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1832 // Call CAS-based locking scheme (FastLock node).
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1833
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1834 transform_later(fast_lock_region);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1835 transform_later(fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1836
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1837 // Get slow path - FastLock failed to lock the object.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1838 ctrl = opt_bits_test(fast_lock_region, region, 2, flock, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1839 mem_phi->init_req(2, fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1840 // region->in(2) is set to fast path - the object is locked to the current thread.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1841
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1842 slow_path->init_req(2, ctrl); // Capture slow-control
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1843 slow_mem->init_req(2, fast_lock_mem_phi);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1844
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1845 transform_later(slow_path);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1846 transform_later(slow_mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1847 // Reset lock's memory edge.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1848 lock->set_req(TypeFunc::Memory, slow_mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1849
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1850 } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1851 region = new (C, 3) RegionNode(3);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1852 // create a Phi for the memory state
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1853 mem_phi = new (C, 3) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1854
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1855 // Optimize test; set region slot 2
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1856 slow_path = opt_bits_test(ctrl, region, 2, flock, 0, 0);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1857 mem_phi->init_req(2, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1858 }
0 a61af66fc99e Initial load duke parents: diff changeset	1859
a61af66fc99e Initial load duke parents: diff changeset	1860 // Make slow path call
a61af66fc99e Initial load duke parents: diff changeset	1861 CallNode call = make_slow_call( (CallNode ) lock, OptoRuntime::complete_monitor_enter_Type(), OptoRuntime::complete_monitor_locking_Java(), NULL, slow_path, obj, box );
a61af66fc99e Initial load duke parents: diff changeset	1862
a61af66fc99e Initial load duke parents: diff changeset	1863 extract_call_projections(call);
a61af66fc99e Initial load duke parents: diff changeset	1864
a61af66fc99e Initial load duke parents: diff changeset	1865 // Slow path can only throw asynchronous exceptions, which are always
a61af66fc99e Initial load duke parents: diff changeset	1866 // de-opted. So the compiler thinks the slow-call can never throw an
a61af66fc99e Initial load duke parents: diff changeset	1867 // exception. If it DOES throw an exception we would need the debug
a61af66fc99e Initial load duke parents: diff changeset	1868 // info removed first (since if it throws there is no monitor).
a61af66fc99e Initial load duke parents: diff changeset	1869 assert ( _ioproj_fallthrough == NULL && _ioproj_catchall == NULL &&
a61af66fc99e Initial load duke parents: diff changeset	1870 _memproj_catchall == NULL && _catchallcatchproj == NULL, "Unexpected projection from Lock");
a61af66fc99e Initial load duke parents: diff changeset	1871
a61af66fc99e Initial load duke parents: diff changeset	1872 // Capture slow path
a61af66fc99e Initial load duke parents: diff changeset	1873 // disconnect fall-through projection from call and create a new one
a61af66fc99e Initial load duke parents: diff changeset	1874 // hook up users of fall-through projection to region
a61af66fc99e Initial load duke parents: diff changeset	1875 Node *slow_ctrl = _fallthroughproj->clone();
a61af66fc99e Initial load duke parents: diff changeset	1876 transform_later(slow_ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1877 _igvn.hash_delete(_fallthroughproj);
a61af66fc99e Initial load duke parents: diff changeset	1878 _fallthroughproj->disconnect_inputs(NULL);
a61af66fc99e Initial load duke parents: diff changeset	1879 region->init_req(1, slow_ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1880 // region inputs are now complete
a61af66fc99e Initial load duke parents: diff changeset	1881 transform_later(region);
a61af66fc99e Initial load duke parents: diff changeset	1882 _igvn.subsume_node(_fallthroughproj, region);
a61af66fc99e Initial load duke parents: diff changeset	1883
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1884 Node *memproj = transform_later( new(C, 1) ProjNode(call, TypeFunc::Memory) );
0 a61af66fc99e Initial load duke parents: diff changeset	1885 mem_phi->init_req(1, memproj );
a61af66fc99e Initial load duke parents: diff changeset	1886 transform_later(mem_phi);
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1887 _igvn.hash_delete(_memproj_fallthrough);
0 a61af66fc99e Initial load duke parents: diff changeset	1888 _igvn.subsume_node(_memproj_fallthrough, mem_phi);
a61af66fc99e Initial load duke parents: diff changeset	1889 }
a61af66fc99e Initial load duke parents: diff changeset	1890
a61af66fc99e Initial load duke parents: diff changeset	1891 //------------------------------expand_unlock_node----------------------
a61af66fc99e Initial load duke parents: diff changeset	1892 void PhaseMacroExpand::expand_unlock_node(UnlockNode *unlock) {
a61af66fc99e Initial load duke parents: diff changeset	1893
66 6dbf1a175d6b 6672848: (Escape Analysis) improve lock elimination with EA kvn parents: 63 diff changeset	1894 Node* ctrl = unlock->in(TypeFunc::Control);
0 a61af66fc99e Initial load duke parents: diff changeset	1895 Node* mem = unlock->in(TypeFunc::Memory);
a61af66fc99e Initial load duke parents: diff changeset	1896 Node* obj = unlock->obj_node();
a61af66fc99e Initial load duke parents: diff changeset	1897 Node* box = unlock->box_node();
a61af66fc99e Initial load duke parents: diff changeset	1898
a61af66fc99e Initial load duke parents: diff changeset	1899 // No need for a null check on unlock
a61af66fc99e Initial load duke parents: diff changeset	1900
a61af66fc99e Initial load duke parents: diff changeset	1901 // Make the merge point
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1902 Node *region;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1903 Node *mem_phi;
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1904
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1905 if (UseOptoBiasInlining) {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1906 // Check for biased locking unlock case, which is a no-op.
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1907 // See the full descrition in MacroAssembler::biased_locking_exit().
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1908 region = new (C, 4) RegionNode(4);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1909 // create a Phi for the memory state
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1910 mem_phi = new (C, 4) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1911 mem_phi->init_req(3, mem);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1912
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1913 Node* mark_node = make_load(ctrl, mem, obj, oopDesc::mark_offset_in_bytes(), TypeX_X, TypeX_X->basic_type());
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1914 ctrl = opt_bits_test(ctrl, region, 3, mark_node,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1915 markOopDesc::biased_lock_mask_in_place,
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1916 markOopDesc::biased_lock_pattern);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1917 } else {
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1918 region = new (C, 3) RegionNode(3);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1919 // create a Phi for the memory state
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1920 mem_phi = new (C, 3) PhiNode( region, Type::MEMORY, TypeRawPtr::BOTTOM);
a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1921 }
0 a61af66fc99e Initial load duke parents: diff changeset	1922
a61af66fc99e Initial load duke parents: diff changeset	1923 FastUnlockNode *funlock = new (C, 3) FastUnlockNode( ctrl, obj, box );
a61af66fc99e Initial load duke parents: diff changeset	1924 funlock = transform_later( funlock )->as_FastUnlock();
a61af66fc99e Initial load duke parents: diff changeset	1925 // Optimize test; set region slot 2
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1926 Node *slow_path = opt_bits_test(ctrl, region, 2, funlock, 0, 0);
0 a61af66fc99e Initial load duke parents: diff changeset	1927
a61af66fc99e Initial load duke parents: diff changeset	1928 CallNode call = make_slow_call( (CallNode ) unlock, OptoRuntime::complete_monitor_exit_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_unlocking_C), "complete_monitor_unlocking_C", slow_path, obj, box );
a61af66fc99e Initial load duke parents: diff changeset	1929
a61af66fc99e Initial load duke parents: diff changeset	1930 extract_call_projections(call);
a61af66fc99e Initial load duke parents: diff changeset	1931
a61af66fc99e Initial load duke parents: diff changeset	1932 assert ( _ioproj_fallthrough == NULL && _ioproj_catchall == NULL &&
a61af66fc99e Initial load duke parents: diff changeset	1933 _memproj_catchall == NULL && _catchallcatchproj == NULL, "Unexpected projection from Lock");
a61af66fc99e Initial load duke parents: diff changeset	1934
a61af66fc99e Initial load duke parents: diff changeset	1935 // No exceptions for unlocking
a61af66fc99e Initial load duke parents: diff changeset	1936 // Capture slow path
a61af66fc99e Initial load duke parents: diff changeset	1937 // disconnect fall-through projection from call and create a new one
a61af66fc99e Initial load duke parents: diff changeset	1938 // hook up users of fall-through projection to region
a61af66fc99e Initial load duke parents: diff changeset	1939 Node *slow_ctrl = _fallthroughproj->clone();
a61af66fc99e Initial load duke parents: diff changeset	1940 transform_later(slow_ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1941 _igvn.hash_delete(_fallthroughproj);
a61af66fc99e Initial load duke parents: diff changeset	1942 _fallthroughproj->disconnect_inputs(NULL);
a61af66fc99e Initial load duke parents: diff changeset	1943 region->init_req(1, slow_ctrl);
a61af66fc99e Initial load duke parents: diff changeset	1944 // region inputs are now complete
a61af66fc99e Initial load duke parents: diff changeset	1945 transform_later(region);
a61af66fc99e Initial load duke parents: diff changeset	1946 _igvn.subsume_node(_fallthroughproj, region);
a61af66fc99e Initial load duke parents: diff changeset	1947
a61af66fc99e Initial load duke parents: diff changeset	1948 Node *memproj = transform_later( new(C, 1) ProjNode(call, TypeFunc::Memory) );
a61af66fc99e Initial load duke parents: diff changeset	1949 mem_phi->init_req(1, memproj );
a61af66fc99e Initial load duke parents: diff changeset	1950 mem_phi->init_req(2, mem);
a61af66fc99e Initial load duke parents: diff changeset	1951 transform_later(mem_phi);
420 a1980da045cc 6462850: generate biased locking code in C2 ideal graph kvn parents: 362 diff changeset	1952 _igvn.hash_delete(_memproj_fallthrough);
0 a61af66fc99e Initial load duke parents: diff changeset	1953 _igvn.subsume_node(_memproj_fallthrough, mem_phi);
a61af66fc99e Initial load duke parents: diff changeset	1954 }
a61af66fc99e Initial load duke parents: diff changeset	1955
a61af66fc99e Initial load duke parents: diff changeset	1956 //------------------------------expand_macro_nodes----------------------
a61af66fc99e Initial load duke parents: diff changeset	1957 // Returns true if a failure occurred.
a61af66fc99e Initial load duke parents: diff changeset	1958 bool PhaseMacroExpand::expand_macro_nodes() {
a61af66fc99e Initial load duke parents: diff changeset	1959 if (C->macro_count() == 0)
a61af66fc99e Initial load duke parents: diff changeset	1960 return false;
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1961 // First, attempt to eliminate locks
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1962 bool progress = true;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1963 while (progress) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1964 progress = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1965 for (int i = C->macro_count(); i > 0; i--) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1966 Node * n = C->macro_node(i-1);
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1967 bool success = false;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1968 debug_only(int old_macro_count = C->macro_count(););
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1969 if (n->is_AbstractLock()) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1970 success = eliminate_locking_node(n->as_AbstractLock());
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1971 } else if (n->Opcode() == Op_Opaque1 \|\| n->Opcode() == Op_Opaque2) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1972 _igvn.add_users_to_worklist(n);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1973 _igvn.hash_delete(n);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1974 _igvn.subsume_node(n, n->in(1));
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1975 success = true;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1976 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1977 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1978 progress = progress \|\| success;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1979 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1980 }
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1981 // Next, attempt to eliminate allocations
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1982 progress = true;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1983 while (progress) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1984 progress = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1985 for (int i = C->macro_count(); i > 0; i--) {
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1986 Node * n = C->macro_node(i-1);
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1987 bool success = false;
424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1988 debug_only(int old_macro_count = C->macro_count(););
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1989 switch (n->class_id()) {
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1990 case Node::Class_Allocate:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1991 case Node::Class_AllocateArray:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1992 success = eliminate_allocate_node(n->as_Allocate());
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1993 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1994 case Node::Class_Lock:
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1995 case Node::Class_Unlock:
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1996 assert(!n->as_AbstractLock()->is_eliminated(), "sanity");
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1997 break;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	1998 default:
460 424f9bfe6b96 6775880: EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now") kvn parents: 436 diff changeset	1999 assert(false, "unknown node type in macro list");
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2000 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2001 assert(success == (C->macro_count() < old_macro_count), "elimination reduces macro count");
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2002 progress = progress \|\| success;
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2003 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2004 }
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2005 // Make sure expansion will not cause node limit to be exceeded.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2006 // Worst case is a macro node gets expanded into about 50 nodes.
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2007 // Allow 50% more for optimization.
0 a61af66fc99e Initial load duke parents: diff changeset	2008 if (C->check_node_count(C->macro_count() * 75, "out of nodes before macro expansion" ) )
a61af66fc99e Initial load duke parents: diff changeset	2009 return true;
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2010
0 a61af66fc99e Initial load duke parents: diff changeset	2011 // expand "macro" nodes
a61af66fc99e Initial load duke parents: diff changeset	2012 // nodes are removed from the macro list as they are processed
a61af66fc99e Initial load duke parents: diff changeset	2013 while (C->macro_count() > 0) {
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2014 int macro_count = C->macro_count();
a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2015 Node * n = C->macro_node(macro_count-1);
0 a61af66fc99e Initial load duke parents: diff changeset	2016 assert(n->is_macro(), "only macro nodes expected here");
a61af66fc99e Initial load duke parents: diff changeset	2017 if (_igvn.type(n) == Type::TOP \|\| n->in(0)->is_top() ) {
a61af66fc99e Initial load duke parents: diff changeset	2018 // node is unreachable, so don't try to expand it
a61af66fc99e Initial load duke parents: diff changeset	2019 C->remove_macro_node(n);
a61af66fc99e Initial load duke parents: diff changeset	2020 continue;
a61af66fc99e Initial load duke parents: diff changeset	2021 }
a61af66fc99e Initial load duke parents: diff changeset	2022 switch (n->class_id()) {
a61af66fc99e Initial load duke parents: diff changeset	2023 case Node::Class_Allocate:
a61af66fc99e Initial load duke parents: diff changeset	2024 expand_allocate(n->as_Allocate());
a61af66fc99e Initial load duke parents: diff changeset	2025 break;
a61af66fc99e Initial load duke parents: diff changeset	2026 case Node::Class_AllocateArray:
a61af66fc99e Initial load duke parents: diff changeset	2027 expand_allocate_array(n->as_AllocateArray());
a61af66fc99e Initial load duke parents: diff changeset	2028 break;
a61af66fc99e Initial load duke parents: diff changeset	2029 case Node::Class_Lock:
a61af66fc99e Initial load duke parents: diff changeset	2030 expand_lock_node(n->as_Lock());
a61af66fc99e Initial load duke parents: diff changeset	2031 break;
a61af66fc99e Initial load duke parents: diff changeset	2032 case Node::Class_Unlock:
a61af66fc99e Initial load duke parents: diff changeset	2033 expand_unlock_node(n->as_Unlock());
a61af66fc99e Initial load duke parents: diff changeset	2034 break;
a61af66fc99e Initial load duke parents: diff changeset	2035 default:
a61af66fc99e Initial load duke parents: diff changeset	2036 assert(false, "unknown node type in macro list");
a61af66fc99e Initial load duke parents: diff changeset	2037 }
73 a8880a78d355 6259129: (Escape Analysis) scalar replacement for not escaping objects kvn parents: 66 diff changeset	2038 assert(C->macro_count() < macro_count, "must have deleted a node from macro list");
0 a61af66fc99e Initial load duke parents: diff changeset	2039 if (C->failing()) return true;
a61af66fc99e Initial load duke parents: diff changeset	2040 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	2041
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 73 diff changeset	2042 _igvn.set_delay_transform(false);
0 a61af66fc99e Initial load duke parents: diff changeset	2043 _igvn.optimize();
a61af66fc99e Initial load duke parents: diff changeset	2044 return false;
a61af66fc99e Initial load duke parents: diff changeset	2045 }

Mercurial > hg > truffle

annotate src/share/vm/opto/macro.cpp @ 601:523ded093c31