truffle: src/share/vm/opto/parse3.cpp annotate

annotate src/share/vm/opto/parse3.cpp @ 14663:3edd4a71588b

8031818: Experimental VM flag for enforcing safe object construction Summary: -XX:+AlwaysSafeConstructors to unconditionally emit the trailing constructor barrier. Reviewed-by: kvn, roland

author	shade
date	Mon, 03 Mar 2014 15:31:27 +0400
parents	3c3953fb3f2a
children	92aa6797d639

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
7999 4fcf990aa34a 8006807: C2 crash due to out of bounds array access in Parse::do_multianewarray drchase parents: 7428 diff changeset	2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. 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 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1252 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1252 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1252 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #include "compiler/compileLog.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27 #include "interpreter/linkResolver.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "memory/universe.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "oops/objArrayKlass.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "opto/addnode.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "opto/memnode.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "opto/parse.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	33 #include "opto/rootnode.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	34 #include "opto/runtime.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	35 #include "opto/subnode.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	36 #include "runtime/deoptimization.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	37 #include "runtime/handles.inline.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	38
a61af66fc99e Initial load duke parents: diff changeset	39 //=============================================================================
a61af66fc99e Initial load duke parents: diff changeset	40 // Helper methods for _get* and _put* bytecodes
a61af66fc99e Initial load duke parents: diff changeset	41 //=============================================================================
a61af66fc99e Initial load duke parents: diff changeset	42 bool Parse::static_field_ok_in_clinit(ciField field, ciMethod method) {
a61af66fc99e Initial load duke parents: diff changeset	43 // Could be the field_holder's <clinit> method, or <clinit> for a subklass.
a61af66fc99e Initial load duke parents: diff changeset	44 // Better to check now than to Deoptimize as soon as we execute
a61af66fc99e Initial load duke parents: diff changeset	45 assert( field->is_static(), "Only check if field is static");
a61af66fc99e Initial load duke parents: diff changeset	46 // is_being_initialized() is too generous. It allows access to statics
a61af66fc99e Initial load duke parents: diff changeset	47 // by threads that are not running the <clinit> before the <clinit> finishes.
a61af66fc99e Initial load duke parents: diff changeset	48 // return field->holder()->is_being_initialized();
a61af66fc99e Initial load duke parents: diff changeset	49
a61af66fc99e Initial load duke parents: diff changeset	50 // The following restriction is correct but conservative.
a61af66fc99e Initial load duke parents: diff changeset	51 // It is also desirable to allow compilation of methods called from <clinit>
a61af66fc99e Initial load duke parents: diff changeset	52 // but this generated code will need to be made safe for execution by
a61af66fc99e Initial load duke parents: diff changeset	53 // other threads, or the transition from interpreted to compiled code would
a61af66fc99e Initial load duke parents: diff changeset	54 // need to be guarded.
a61af66fc99e Initial load duke parents: diff changeset	55 ciInstanceKlass *field_holder = field->holder();
a61af66fc99e Initial load duke parents: diff changeset	56
a61af66fc99e Initial load duke parents: diff changeset	57 bool access_OK = false;
a61af66fc99e Initial load duke parents: diff changeset	58 if (method->holder()->is_subclass_of(field_holder)) {
a61af66fc99e Initial load duke parents: diff changeset	59 if (method->is_static()) {
a61af66fc99e Initial load duke parents: diff changeset	60 if (method->name() == ciSymbol::class_initializer_name()) {
a61af66fc99e Initial load duke parents: diff changeset	61 // OK to access static fields inside initializer
a61af66fc99e Initial load duke parents: diff changeset	62 access_OK = true;
a61af66fc99e Initial load duke parents: diff changeset	63 }
a61af66fc99e Initial load duke parents: diff changeset	64 } else {
a61af66fc99e Initial load duke parents: diff changeset	65 if (method->name() == ciSymbol::object_initializer_name()) {
a61af66fc99e Initial load duke parents: diff changeset	66 // It's also OK to access static fields inside a constructor,
a61af66fc99e Initial load duke parents: diff changeset	67 // because any thread calling the constructor must first have
a61af66fc99e Initial load duke parents: diff changeset	68 // synchronized on the class by executing a '_new' bytecode.
a61af66fc99e Initial load duke parents: diff changeset	69 access_OK = true;
a61af66fc99e Initial load duke parents: diff changeset	70 }
a61af66fc99e Initial load duke parents: diff changeset	71 }
a61af66fc99e Initial load duke parents: diff changeset	72 }
a61af66fc99e Initial load duke parents: diff changeset	73
a61af66fc99e Initial load duke parents: diff changeset	74 return access_OK;
a61af66fc99e Initial load duke parents: diff changeset	75
a61af66fc99e Initial load duke parents: diff changeset	76 }
a61af66fc99e Initial load duke parents: diff changeset	77
a61af66fc99e Initial load duke parents: diff changeset	78
a61af66fc99e Initial load duke parents: diff changeset	79 void Parse::do_field_access(bool is_get, bool is_field) {
a61af66fc99e Initial load duke parents: diff changeset	80 bool will_link;
a61af66fc99e Initial load duke parents: diff changeset	81 ciField* field = iter().get_field(will_link);
a61af66fc99e Initial load duke parents: diff changeset	82 assert(will_link, "getfield: typeflow responsibility");
a61af66fc99e Initial load duke parents: diff changeset	83
a61af66fc99e Initial load duke parents: diff changeset	84 ciInstanceKlass* field_holder = field->holder();
a61af66fc99e Initial load duke parents: diff changeset	85
a61af66fc99e Initial load duke parents: diff changeset	86 if (is_field == field->is_static()) {
a61af66fc99e Initial load duke parents: diff changeset	87 // Interpreter will throw java_lang_IncompatibleClassChangeError
a61af66fc99e Initial load duke parents: diff changeset	88 // Check this before allowing <clinit> methods to access static fields
a61af66fc99e Initial load duke parents: diff changeset	89 uncommon_trap(Deoptimization::Reason_unhandled,
a61af66fc99e Initial load duke parents: diff changeset	90 Deoptimization::Action_none);
a61af66fc99e Initial load duke parents: diff changeset	91 return;
a61af66fc99e Initial load duke parents: diff changeset	92 }
a61af66fc99e Initial load duke parents: diff changeset	93
a61af66fc99e Initial load duke parents: diff changeset	94 if (!is_field && !field_holder->is_initialized()) {
a61af66fc99e Initial load duke parents: diff changeset	95 if (!static_field_ok_in_clinit(field, method())) {
a61af66fc99e Initial load duke parents: diff changeset	96 uncommon_trap(Deoptimization::Reason_uninitialized,
a61af66fc99e Initial load duke parents: diff changeset	97 Deoptimization::Action_reinterpret,
a61af66fc99e Initial load duke parents: diff changeset	98 NULL, "!static_field_ok_in_clinit");
a61af66fc99e Initial load duke parents: diff changeset	99 return;
a61af66fc99e Initial load duke parents: diff changeset	100 }
a61af66fc99e Initial load duke parents: diff changeset	101 }
a61af66fc99e Initial load duke parents: diff changeset	102
3901 aa67216400d3 7085404: JSR 292: VolatileCallSites should have push notification too twisti parents: 3852 diff changeset	103 // Deoptimize on putfield writes to call site target field.
3852 fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	104 if (!is_get && field->is_call_site_target()) {
fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	105 uncommon_trap(Deoptimization::Reason_unhandled,
fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	106 Deoptimization::Action_reinterpret,
3901 aa67216400d3 7085404: JSR 292: VolatileCallSites should have push notification too twisti parents: 3852 diff changeset	107 NULL, "put to call site target field");
3852 fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	108 return;
fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	109 }
fdb992d83a87 7071653: JSR 292: call site change notification should be pushed not pulled twisti parents: 3805 diff changeset	110
0 a61af66fc99e Initial load duke parents: diff changeset	111 assert(field->will_link(method()->holder(), bc()), "getfield: typeflow responsibility");
a61af66fc99e Initial load duke parents: diff changeset	112
a61af66fc99e Initial load duke parents: diff changeset	113 // Note: We do not check for an unloaded field type here any more.
a61af66fc99e Initial load duke parents: diff changeset	114
a61af66fc99e Initial load duke parents: diff changeset	115 // Generate code for the object pointer.
a61af66fc99e Initial load duke parents: diff changeset	116 Node* obj;
a61af66fc99e Initial load duke parents: diff changeset	117 if (is_field) {
a61af66fc99e Initial load duke parents: diff changeset	118 int obj_depth = is_get ? 0 : field->type()->size();
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	119 obj = null_check(peek(obj_depth));
0 a61af66fc99e Initial load duke parents: diff changeset	120 // Compile-time detect of null-exception?
a61af66fc99e Initial load duke parents: diff changeset	121 if (stopped()) return;
a61af66fc99e Initial load duke parents: diff changeset	122
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	123 #ifdef ASSERT
0 a61af66fc99e Initial load duke parents: diff changeset	124 const TypeInstPtr *tjp = TypeInstPtr::make(TypePtr::NotNull, iter().get_declared_field_holder());
a61af66fc99e Initial load duke parents: diff changeset	125 assert(_gvn.type(obj)->higher_equal(tjp), "cast_up is no longer needed");
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	126 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	127
a61af66fc99e Initial load duke parents: diff changeset	128 if (is_get) {
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	129 (void) pop(); // pop receiver before getting
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	130 do_get_xxx(obj, field, is_field);
0 a61af66fc99e Initial load duke parents: diff changeset	131 } else {
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	132 do_put_xxx(obj, field, is_field);
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	133 (void) pop(); // pop receiver after putting
0 a61af66fc99e Initial load duke parents: diff changeset	134 }
a61af66fc99e Initial load duke parents: diff changeset	135 } else {
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	136 const TypeInstPtr* tip = TypeInstPtr::make(field_holder->java_mirror());
c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	137 obj = _gvn.makecon(tip);
0 a61af66fc99e Initial load duke parents: diff changeset	138 if (is_get) {
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	139 do_get_xxx(obj, field, is_field);
0 a61af66fc99e Initial load duke parents: diff changeset	140 } else {
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	141 do_put_xxx(obj, field, is_field);
0 a61af66fc99e Initial load duke parents: diff changeset	142 }
a61af66fc99e Initial load duke parents: diff changeset	143 }
a61af66fc99e Initial load duke parents: diff changeset	144 }
a61af66fc99e Initial load duke parents: diff changeset	145
a61af66fc99e Initial load duke parents: diff changeset	146
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	147 void Parse::do_get_xxx(Node* obj, ciField* field, bool is_field) {
0 a61af66fc99e Initial load duke parents: diff changeset	148 // Does this field have a constant value? If so, just push the value.
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	149 if (field->is_constant()) {
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	150 // final or stable field
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	151 const Type* stable_type = NULL;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	152 if (FoldStableValues && field->is_stable()) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	153 stable_type = Type::get_const_type(field->type());
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	154 if (field->type()->is_array_klass()) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	155 int stable_dimension = field->type()->as_array_klass()->dimension();
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	156 stable_type = stable_type->is_aryptr()->cast_to_stable(true, stable_dimension);
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	157 }
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	158 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	159 if (field->is_static()) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	160 // final static field
10278 6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	161 if (C->eliminate_boxing()) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	162 // The pointers in the autobox arrays are always non-null.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	163 ciSymbol* klass_name = field->holder()->name();
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	164 if (field->name() == ciSymbol::cache_field_name() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	165 field->holder()->uses_default_loader() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	166 (klass_name == ciSymbol::java_lang_Character_CharacterCache() \|\|
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	167 klass_name == ciSymbol::java_lang_Byte_ByteCache() \|\|
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	168 klass_name == ciSymbol::java_lang_Short_ShortCache() \|\|
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	169 klass_name == ciSymbol::java_lang_Integer_IntegerCache() \|\|
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	170 klass_name == ciSymbol::java_lang_Long_LongCache())) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	171 bool require_const = true;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	172 bool autobox_cache = true;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	173 if (push_constant(field->constant_value(), require_const, autobox_cache)) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	174 return;
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	175 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	176 }
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	177 }
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	178 if (push_constant(field->constant_value(), false, false, stable_type))
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	179 return;
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	180 } else {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	181 // final or stable non-static field
3902 11a4af030e4b 7071709: JSR 292: switchpoint invalidation should be pushed not pulled twisti parents: 3901 diff changeset	182 // Treat final non-static fields of trusted classes (classes in
11a4af030e4b 7071709: JSR 292: switchpoint invalidation should be pushed not pulled twisti parents: 3901 diff changeset	183 // java.lang.invoke and sun.invoke packages and subpackages) as
11a4af030e4b 7071709: JSR 292: switchpoint invalidation should be pushed not pulled twisti parents: 3901 diff changeset	184 // compile time constants.
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	185 if (obj->is_Con()) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	186 const TypeOopPtr* oop_ptr = obj->bottom_type()->isa_oopptr();
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	187 ciObject* constant_oop = oop_ptr->const_oop();
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	188 ciConstant constant = field->constant_value_of(constant_oop);
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	189 if (FoldStableValues && field->is_stable() && constant.is_null_or_zero()) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	190 // fall through to field load; the field is not yet initialized
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	191 } else {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	192 if (push_constant(constant, true, false, stable_type))
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	193 return;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	194 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	195 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	196 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	197 }
0 a61af66fc99e Initial load duke parents: diff changeset	198
a61af66fc99e Initial load duke parents: diff changeset	199 ciType* field_klass = field->type();
a61af66fc99e Initial load duke parents: diff changeset	200 bool is_vol = field->is_volatile();
a61af66fc99e Initial load duke parents: diff changeset	201
a61af66fc99e Initial load duke parents: diff changeset	202 // Compute address and memory type.
a61af66fc99e Initial load duke parents: diff changeset	203 int offset = field->offset_in_bytes();
a61af66fc99e Initial load duke parents: diff changeset	204 const TypePtr* adr_type = C->alias_type(field)->adr_type();
a61af66fc99e Initial load duke parents: diff changeset	205 Node *adr = basic_plus_adr(obj, obj, offset);
a61af66fc99e Initial load duke parents: diff changeset	206 BasicType bt = field->layout_type();
a61af66fc99e Initial load duke parents: diff changeset	207
a61af66fc99e Initial load duke parents: diff changeset	208 // Build the resultant type of the load
a61af66fc99e Initial load duke parents: diff changeset	209 const Type *type;
a61af66fc99e Initial load duke parents: diff changeset	210
a61af66fc99e Initial load duke parents: diff changeset	211 bool must_assert_null = false;
a61af66fc99e Initial load duke parents: diff changeset	212
a61af66fc99e Initial load duke parents: diff changeset	213 if( bt == T_OBJECT ) {
a61af66fc99e Initial load duke parents: diff changeset	214 if (!field->type()->is_loaded()) {
a61af66fc99e Initial load duke parents: diff changeset	215 type = TypeInstPtr::BOTTOM;
a61af66fc99e Initial load duke parents: diff changeset	216 must_assert_null = true;
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1100 diff changeset	217 } else if (field->is_constant() && field->is_static()) {
0 a61af66fc99e Initial load duke parents: diff changeset	218 // This can happen if the constant oop is non-perm.
a61af66fc99e Initial load duke parents: diff changeset	219 ciObject* con = field->constant_value().as_object();
a61af66fc99e Initial load duke parents: diff changeset	220 // Do not "join" in the previous type; it doesn't add value,
a61af66fc99e Initial load duke parents: diff changeset	221 // and may yield a vacuous result if the field is of interface type.
a61af66fc99e Initial load duke parents: diff changeset	222 type = TypeOopPtr::make_from_constant(con)->isa_oopptr();
a61af66fc99e Initial load duke parents: diff changeset	223 assert(type != NULL, "field singleton type must be consistent");
a61af66fc99e Initial load duke parents: diff changeset	224 } else {
a61af66fc99e Initial load duke parents: diff changeset	225 type = TypeOopPtr::make_from_klass(field_klass->as_klass());
a61af66fc99e Initial load duke parents: diff changeset	226 }
a61af66fc99e Initial load duke parents: diff changeset	227 } else {
a61af66fc99e Initial load duke parents: diff changeset	228 type = Type::get_const_basic_type(bt);
a61af66fc99e Initial load duke parents: diff changeset	229 }
14452 c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	230 if (support_IRIW_for_not_multiple_copy_atomic_cpu && field->is_volatile()) {
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	231 insert_mem_bar(Op_MemBarVolatile); // StoreLoad barrier
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	232 }
0 a61af66fc99e Initial load duke parents: diff changeset	233 // Build the load.
14429 2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	234 //
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	235 MemNode::MemOrd mo = is_vol ? MemNode::acquire : MemNode::unordered;
14662 3c3953fb3f2a 8033380: Experimental VM flag to enforce access atomicity shade parents: 14457 diff changeset	236 bool needs_atomic_access = is_vol \|\| AlwaysAtomicAccesses;
3c3953fb3f2a 8033380: Experimental VM flag to enforce access atomicity shade parents: 14457 diff changeset	237 Node* ld = make_load(NULL, adr, type, bt, adr_type, mo, needs_atomic_access);
0 a61af66fc99e Initial load duke parents: diff changeset	238
a61af66fc99e Initial load duke parents: diff changeset	239 // Adjust Java stack
a61af66fc99e Initial load duke parents: diff changeset	240 if (type2size[bt] == 1)
a61af66fc99e Initial load duke parents: diff changeset	241 push(ld);
a61af66fc99e Initial load duke parents: diff changeset	242 else
a61af66fc99e Initial load duke parents: diff changeset	243 push_pair(ld);
a61af66fc99e Initial load duke parents: diff changeset	244
a61af66fc99e Initial load duke parents: diff changeset	245 if (must_assert_null) {
a61af66fc99e Initial load duke parents: diff changeset	246 // Do not take a trap here. It's possible that the program
a61af66fc99e Initial load duke parents: diff changeset	247 // will never load the field's class, and will happily see
a61af66fc99e Initial load duke parents: diff changeset	248 // null values in this field forever. Don't stumble into a
a61af66fc99e Initial load duke parents: diff changeset	249 // trap for such a program, or we might get a long series
a61af66fc99e Initial load duke parents: diff changeset	250 // of useless recompilations. (Or, we might load a class
a61af66fc99e Initial load duke parents: diff changeset	251 // which should not be loaded.) If we ever see a non-null
a61af66fc99e Initial load duke parents: diff changeset	252 // value, we will then trap and recompile. (The trap will
a61af66fc99e Initial load duke parents: diff changeset	253 // not need to mention the class index, since the class will
a61af66fc99e Initial load duke parents: diff changeset	254 // already have been loaded if we ever see a non-null value.)
a61af66fc99e Initial load duke parents: diff changeset	255 // uncommon_trap(iter().get_field_signature_index());
a61af66fc99e Initial load duke parents: diff changeset	256 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	257 if (PrintOpto && (Verbose \|\| WizardMode)) {
a61af66fc99e Initial load duke parents: diff changeset	258 method()->print_name(); tty->print_cr(" asserting nullness of field at bci: %d", bci());
a61af66fc99e Initial load duke parents: diff changeset	259 }
a61af66fc99e Initial load duke parents: diff changeset	260 #endif
a61af66fc99e Initial load duke parents: diff changeset	261 if (C->log() != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	262 C->log()->elem("assert_null reason='field' klass='%d'",
a61af66fc99e Initial load duke parents: diff changeset	263 C->log()->identify(field->type()));
a61af66fc99e Initial load duke parents: diff changeset	264 }
a61af66fc99e Initial load duke parents: diff changeset	265 // If there is going to be a trap, put it at the next bytecode:
a61af66fc99e Initial load duke parents: diff changeset	266 set_bci(iter().next_bci());
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	267 null_assert(peek());
0 a61af66fc99e Initial load duke parents: diff changeset	268 set_bci(iter().cur_bci()); // put it back
a61af66fc99e Initial load duke parents: diff changeset	269 }
a61af66fc99e Initial load duke parents: diff changeset	270
a61af66fc99e Initial load duke parents: diff changeset	271 // If reference is volatile, prevent following memory ops from
a61af66fc99e Initial load duke parents: diff changeset	272 // floating up past the volatile read. Also prevents commoning
a61af66fc99e Initial load duke parents: diff changeset	273 // another volatile read.
a61af66fc99e Initial load duke parents: diff changeset	274 if (field->is_volatile()) {
a61af66fc99e Initial load duke parents: diff changeset	275 // Memory barrier includes bogus read of value to force load BEFORE membar
a61af66fc99e Initial load duke parents: diff changeset	276 insert_mem_bar(Op_MemBarAcquire, ld);
a61af66fc99e Initial load duke parents: diff changeset	277 }
a61af66fc99e Initial load duke parents: diff changeset	278 }
a61af66fc99e Initial load duke parents: diff changeset	279
2376 c7f3d0b4570f 7017732: move static fields into Class to prepare for perm gen removal never parents: 2357 diff changeset	280 void Parse::do_put_xxx(Node* obj, ciField* field, bool is_field) {
0 a61af66fc99e Initial load duke parents: diff changeset	281 bool is_vol = field->is_volatile();
a61af66fc99e Initial load duke parents: diff changeset	282 // If reference is volatile, prevent following memory ops from
a61af66fc99e Initial load duke parents: diff changeset	283 // floating down past the volatile write. Also prevents commoning
a61af66fc99e Initial load duke parents: diff changeset	284 // another volatile read.
a61af66fc99e Initial load duke parents: diff changeset	285 if (is_vol) insert_mem_bar(Op_MemBarRelease);
a61af66fc99e Initial load duke parents: diff changeset	286
a61af66fc99e Initial load duke parents: diff changeset	287 // Compute address and memory type.
a61af66fc99e Initial load duke parents: diff changeset	288 int offset = field->offset_in_bytes();
a61af66fc99e Initial load duke parents: diff changeset	289 const TypePtr* adr_type = C->alias_type(field)->adr_type();
a61af66fc99e Initial load duke parents: diff changeset	290 Node* adr = basic_plus_adr(obj, obj, offset);
a61af66fc99e Initial load duke parents: diff changeset	291 BasicType bt = field->layout_type();
a61af66fc99e Initial load duke parents: diff changeset	292 // Value to be stored
a61af66fc99e Initial load duke parents: diff changeset	293 Node* val = type2size[bt] == 1 ? pop() : pop_pair();
a61af66fc99e Initial load duke parents: diff changeset	294 // Round doubles before storing
a61af66fc99e Initial load duke parents: diff changeset	295 if (bt == T_DOUBLE) val = dstore_rounding(val);
a61af66fc99e Initial load duke parents: diff changeset	296
14429 2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	297 // Conservatively release stores of object references.
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	298 const MemNode::MemOrd mo =
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	299 is_vol ?
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	300 // Volatile fields need releasing stores.
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	301 MemNode::release :
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	302 // Non-volatile fields also need releasing stores if they hold an
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	303 // object reference, because the object reference might point to
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	304 // a freshly created object.
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	305 StoreNode::release_if_reference(bt);
2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	306
0 a61af66fc99e Initial load duke parents: diff changeset	307 // Store the value.
a61af66fc99e Initial load duke parents: diff changeset	308 Node* store;
a61af66fc99e Initial load duke parents: diff changeset	309 if (bt == T_OBJECT) {
825 8f5825e0aeaa 6818666: G1: Type lost in g1 pre-barrier never parents: 730 diff changeset	310 const TypeOopPtr* field_type;
0 a61af66fc99e Initial load duke parents: diff changeset	311 if (!field->type()->is_loaded()) {
a61af66fc99e Initial load duke parents: diff changeset	312 field_type = TypeInstPtr::BOTTOM;
a61af66fc99e Initial load duke parents: diff changeset	313 } else {
a61af66fc99e Initial load duke parents: diff changeset	314 field_type = TypeOopPtr::make_from_klass(field->type()->as_klass());
a61af66fc99e Initial load duke parents: diff changeset	315 }
14429 2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	316 store = store_oop_to_object(control(), obj, adr, adr_type, val, field_type, bt, mo);
0 a61af66fc99e Initial load duke parents: diff changeset	317 } else {
14662 3c3953fb3f2a 8033380: Experimental VM flag to enforce access atomicity shade parents: 14457 diff changeset	318 bool needs_atomic_access = is_vol \|\| AlwaysAtomicAccesses;
3c3953fb3f2a 8033380: Experimental VM flag to enforce access atomicity shade parents: 14457 diff changeset	319 store = store_to_memory(control(), adr, val, bt, adr_type, mo, needs_atomic_access);
0 a61af66fc99e Initial load duke parents: diff changeset	320 }
a61af66fc99e Initial load duke parents: diff changeset	321
a61af66fc99e Initial load duke parents: diff changeset	322 // If reference is volatile, prevent following volatiles ops from
a61af66fc99e Initial load duke parents: diff changeset	323 // floating up before the volatile write.
a61af66fc99e Initial load duke parents: diff changeset	324 if (is_vol) {
14452 c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	325 // If not multiple copy atomic, we do the MemBarVolatile before the load.
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	326 if (!support_IRIW_for_not_multiple_copy_atomic_cpu) {
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	327 insert_mem_bar(Op_MemBarVolatile); // Use fat membar
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	328 }
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	329 // Remember we wrote a volatile field.
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	330 // For not multiple copy atomic cpu (ppc64) a barrier should be issued
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	331 // in constructors which have such stores. See do_exits() in parse1.cpp.
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	332 if (is_field) {
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	333 set_wrote_volatile(true);
c6d7e7406136 8029101: PPC64 (part 211): ordering of Independent Reads of Independent Writes goetz parents: 14429 diff changeset	334 }
0 a61af66fc99e Initial load duke parents: diff changeset	335 }
a61af66fc99e Initial load duke parents: diff changeset	336
14663 3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	337 if (is_field) {
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	338 set_wrote_fields(true);
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	339 }
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	340
0 a61af66fc99e Initial load duke parents: diff changeset	341 // If the field is final, the rules of Java say we are in <init> or <clinit>.
a61af66fc99e Initial load duke parents: diff changeset	342 // Note the presence of writes to final non-static fields, so that we
a61af66fc99e Initial load duke parents: diff changeset	343 // can insert a memory barrier later on to keep the writes from floating
a61af66fc99e Initial load duke parents: diff changeset	344 // out of the constructor.
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	345 // Any method can write a @Stable field; insert memory barriers after those also.
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	346 if (is_field && (field->is_final() \|\| field->is_stable())) {
14663 3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	347 if (field->is_final()) {
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	348 set_wrote_final(true);
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	349 }
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	350 if (field->is_stable()) {
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	351 set_wrote_stable(true);
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	352 }
3edd4a71588b 8031818: Experimental VM flag for enforcing safe object construction shade parents: 14662 diff changeset	353
10278 6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	354 // Preserve allocation ptr to create precedent edge to it in membar
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	355 // generated on exit from constructor.
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	356 if (C->eliminate_boxing() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	357 adr_type->isa_oopptr() && adr_type->is_oopptr()->is_ptr_to_boxed_value() &&
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	358 AllocateNode::Ideal_allocation(obj, &_gvn) != NULL) {
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	359 set_alloc_with_final(obj);
6f3fd5150b67 6934604: enable parts of EliminateAutoBox by default kvn parents: 7999 diff changeset	360 }
0 a61af66fc99e Initial load duke parents: diff changeset	361 }
a61af66fc99e Initial load duke parents: diff changeset	362 }
a61af66fc99e Initial load duke parents: diff changeset	363
a61af66fc99e Initial load duke parents: diff changeset	364
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	365
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	366 bool Parse::push_constant(ciConstant constant, bool require_constant, bool is_autobox_cache, const Type* stable_type) {
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	367 const Type* con_type = Type::make_from_constant(constant, require_constant, is_autobox_cache);
0 a61af66fc99e Initial load duke parents: diff changeset	368 switch (constant.basic_type()) {
a61af66fc99e Initial load duke parents: diff changeset	369 case T_ARRAY:
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	370 case T_OBJECT:
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 844 diff changeset	371 // cases:
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 844 diff changeset	372 // can_be_constant = (oop not scavengable \|\| ScavengeRootsInCode != 0)
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 844 diff changeset	373 // should_be_constant = (oop not scavengable \|\| ScavengeRootsInCode >= 2)
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 844 diff changeset	374 // An oop is not scavengable if it is in the perm gen.
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	375 if (stable_type != NULL && con_type != NULL && con_type->isa_oopptr())
14383 5ec7dace41a6 8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed roland parents: 12190 diff changeset	376 con_type = con_type->join_speculative(stable_type);
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	377 break;
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	378
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	379 case T_ILLEGAL:
0 a61af66fc99e Initial load duke parents: diff changeset	380 // Invalid ciConstant returned due to OutOfMemoryError in the CI
a61af66fc99e Initial load duke parents: diff changeset	381 assert(C->env()->failing(), "otherwise should not see this");
a61af66fc99e Initial load duke parents: diff changeset	382 // These always occur because of object types; we are going to
a61af66fc99e Initial load duke parents: diff changeset	383 // bail out anyway, so make the stack depths match up
a61af66fc99e Initial load duke parents: diff changeset	384 push( zerocon(T_OBJECT) );
a61af66fc99e Initial load duke parents: diff changeset	385 return false;
a61af66fc99e Initial load duke parents: diff changeset	386 }
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	387
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	388 if (con_type == NULL)
edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	389 // we cannot inline the oop, but we can use it later to narrow a type
0 a61af66fc99e Initial load duke parents: diff changeset	390 return false;
a61af66fc99e Initial load duke parents: diff changeset	391
12190 edb5ab0f3fe5 8001107: @Stable annotation for constant folding of lazily evaluated variables vlivanov parents: 11164 diff changeset	392 push_node(constant.basic_type(), makecon(con_type));
0 a61af66fc99e Initial load duke parents: diff changeset	393 return true;
a61af66fc99e Initial load duke parents: diff changeset	394 }
a61af66fc99e Initial load duke parents: diff changeset	395
a61af66fc99e Initial load duke parents: diff changeset	396
a61af66fc99e Initial load duke parents: diff changeset	397 //=============================================================================
a61af66fc99e Initial load duke parents: diff changeset	398 void Parse::do_anewarray() {
a61af66fc99e Initial load duke parents: diff changeset	399 bool will_link;
a61af66fc99e Initial load duke parents: diff changeset	400 ciKlass* klass = iter().get_klass(will_link);
a61af66fc99e Initial load duke parents: diff changeset	401
a61af66fc99e Initial load duke parents: diff changeset	402 // Uncommon Trap when class that array contains is not loaded
a61af66fc99e Initial load duke parents: diff changeset	403 // we need the loaded class for the rest of graph; do not
a61af66fc99e Initial load duke parents: diff changeset	404 // initialize the container class (see Java spec)!!!
a61af66fc99e Initial load duke parents: diff changeset	405 assert(will_link, "anewarray: typeflow responsibility");
a61af66fc99e Initial load duke parents: diff changeset	406
a61af66fc99e Initial load duke parents: diff changeset	407 ciObjArrayKlass* array_klass = ciObjArrayKlass::make(klass);
a61af66fc99e Initial load duke parents: diff changeset	408 // Check that array_klass object is loaded
a61af66fc99e Initial load duke parents: diff changeset	409 if (!array_klass->is_loaded()) {
a61af66fc99e Initial load duke parents: diff changeset	410 // Generate uncommon_trap for unloaded array_class
a61af66fc99e Initial load duke parents: diff changeset	411 uncommon_trap(Deoptimization::Reason_unloaded,
a61af66fc99e Initial load duke parents: diff changeset	412 Deoptimization::Action_reinterpret,
a61af66fc99e Initial load duke parents: diff changeset	413 array_klass);
a61af66fc99e Initial load duke parents: diff changeset	414 return;
a61af66fc99e Initial load duke parents: diff changeset	415 }
a61af66fc99e Initial load duke parents: diff changeset	416
a61af66fc99e Initial load duke parents: diff changeset	417 kill_dead_locals();
a61af66fc99e Initial load duke parents: diff changeset	418
a61af66fc99e Initial load duke parents: diff changeset	419 const TypeKlassPtr* array_klass_type = TypeKlassPtr::make(array_klass);
a61af66fc99e Initial load duke parents: diff changeset	420 Node* count_val = pop();
730 9c6be3edf0dc 6589834: deoptimization problem with -XX:+DeoptimizeALot cfang parents: 196 diff changeset	421 Node* obj = new_array(makecon(array_klass_type), count_val, 1);
0 a61af66fc99e Initial load duke parents: diff changeset	422 push(obj);
a61af66fc99e Initial load duke parents: diff changeset	423 }
a61af66fc99e Initial load duke parents: diff changeset	424
a61af66fc99e Initial load duke parents: diff changeset	425
a61af66fc99e Initial load duke parents: diff changeset	426 void Parse::do_newarray(BasicType elem_type) {
a61af66fc99e Initial load duke parents: diff changeset	427 kill_dead_locals();
a61af66fc99e Initial load duke parents: diff changeset	428
a61af66fc99e Initial load duke parents: diff changeset	429 Node* count_val = pop();
a61af66fc99e Initial load duke parents: diff changeset	430 const TypeKlassPtr* array_klass = TypeKlassPtr::make(ciTypeArrayKlass::make(elem_type));
730 9c6be3edf0dc 6589834: deoptimization problem with -XX:+DeoptimizeALot cfang parents: 196 diff changeset	431 Node* obj = new_array(makecon(array_klass), count_val, 1);
0 a61af66fc99e Initial load duke parents: diff changeset	432 // Push resultant oop onto stack
a61af66fc99e Initial load duke parents: diff changeset	433 push(obj);
a61af66fc99e Initial load duke parents: diff changeset	434 }
a61af66fc99e Initial load duke parents: diff changeset	435
a61af66fc99e Initial load duke parents: diff changeset	436 // Expand simple expressions like new int[3][5] and new Object[2][nonConLen].
a61af66fc99e Initial load duke parents: diff changeset	437 // Also handle the degenerate 1-dimensional case of anewarray.
730 9c6be3edf0dc 6589834: deoptimization problem with -XX:+DeoptimizeALot cfang parents: 196 diff changeset	438 Node* Parse::expand_multianewarray(ciArrayKlass* array_klass, Node* *lengths, int ndimensions, int nargs) {
0 a61af66fc99e Initial load duke parents: diff changeset	439 Node* length = lengths[0];
a61af66fc99e Initial load duke parents: diff changeset	440 assert(length != NULL, "");
730 9c6be3edf0dc 6589834: deoptimization problem with -XX:+DeoptimizeALot cfang parents: 196 diff changeset	441 Node* array = new_array(makecon(TypeKlassPtr::make(array_klass)), length, nargs);
0 a61af66fc99e Initial load duke parents: diff changeset	442 if (ndimensions > 1) {
a61af66fc99e Initial load duke parents: diff changeset	443 jint length_con = find_int_con(length, -1);
a61af66fc99e Initial load duke parents: diff changeset	444 guarantee(length_con >= 0, "non-constant multianewarray");
a61af66fc99e Initial load duke parents: diff changeset	445 ciArrayKlass* array_klass_1 = array_klass->as_obj_array_klass()->element_klass()->as_array_klass();
a61af66fc99e Initial load duke parents: diff changeset	446 const TypePtr* adr_type = TypeAryPtr::OOPS;
827 bf3489cc0aa0 6856025: assert(_base >= OopPtr && _base <= KlassPtr,"Not a Java pointer") never parents: 825 diff changeset	447 const TypeOopPtr* elemtype = _gvn.type(array)->is_aryptr()->elem()->make_oopptr();
0 a61af66fc99e Initial load duke parents: diff changeset	448 const intptr_t header = arrayOopDesc::base_offset_in_bytes(T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	449 for (jint i = 0; i < length_con; i++) {
730 9c6be3edf0dc 6589834: deoptimization problem with -XX:+DeoptimizeALot cfang parents: 196 diff changeset	450 Node* elem = expand_multianewarray(array_klass_1, &lengths[1], ndimensions-1, nargs);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 106 diff changeset	451 intptr_t offset = header + ((intptr_t)i << LogBytesPerHeapOop);
0 a61af66fc99e Initial load duke parents: diff changeset	452 Node* eaddr = basic_plus_adr(array, offset);
14429 2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	453 store_oop_to_array(control(), array, eaddr, adr_type, elem, elemtype, T_OBJECT, MemNode::unordered);
0 a61af66fc99e Initial load duke parents: diff changeset	454 }
a61af66fc99e Initial load duke parents: diff changeset	455 }
a61af66fc99e Initial load duke parents: diff changeset	456 return array;
a61af66fc99e Initial load duke parents: diff changeset	457 }
a61af66fc99e Initial load duke parents: diff changeset	458
a61af66fc99e Initial load duke parents: diff changeset	459 void Parse::do_multianewarray() {
a61af66fc99e Initial load duke parents: diff changeset	460 int ndimensions = iter().get_dimensions();
a61af66fc99e Initial load duke parents: diff changeset	461
a61af66fc99e Initial load duke parents: diff changeset	462 // the m-dimensional array
a61af66fc99e Initial load duke parents: diff changeset	463 bool will_link;
a61af66fc99e Initial load duke parents: diff changeset	464 ciArrayKlass* array_klass = iter().get_klass(will_link)->as_array_klass();
a61af66fc99e Initial load duke parents: diff changeset	465 assert(will_link, "multianewarray: typeflow responsibility");
a61af66fc99e Initial load duke parents: diff changeset	466
a61af66fc99e Initial load duke parents: diff changeset	467 // Note: Array classes are always initialized; no is_initialized check.
a61af66fc99e Initial load duke parents: diff changeset	468
a61af66fc99e Initial load duke parents: diff changeset	469 kill_dead_locals();
a61af66fc99e Initial load duke parents: diff changeset	470
a61af66fc99e Initial load duke parents: diff changeset	471 // get the lengths from the stack (first dimension is on top)
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	472 Node** length = NEW_RESOURCE_ARRAY(Node*, ndimensions + 1);
0 a61af66fc99e Initial load duke parents: diff changeset	473 length[ndimensions] = NULL; // terminating null for make_runtime_call
a61af66fc99e Initial load duke parents: diff changeset	474 int j;
a61af66fc99e Initial load duke parents: diff changeset	475 for (j = ndimensions-1; j >= 0 ; j--) length[j] = pop();
a61af66fc99e Initial load duke parents: diff changeset	476
a61af66fc99e Initial load duke parents: diff changeset	477 // The original expression was of this form: new T[length0][length1]...
a61af66fc99e Initial load duke parents: diff changeset	478 // It is often the case that the lengths are small (except the last).
a61af66fc99e Initial load duke parents: diff changeset	479 // If that happens, use the fast 1-d creator a constant number of times.
a61af66fc99e Initial load duke parents: diff changeset	480 const jint expand_limit = MIN2((juint)MultiArrayExpandLimit, (juint)100);
a61af66fc99e Initial load duke parents: diff changeset	481 jint expand_count = 1; // count of allocations in the expansion
a61af66fc99e Initial load duke parents: diff changeset	482 jint expand_fanout = 1; // running total fanout
a61af66fc99e Initial load duke parents: diff changeset	483 for (j = 0; j < ndimensions-1; j++) {
a61af66fc99e Initial load duke parents: diff changeset	484 jint dim_con = find_int_con(length[j], -1);
a61af66fc99e Initial load duke parents: diff changeset	485 expand_fanout *= dim_con;
a61af66fc99e Initial load duke parents: diff changeset	486 expand_count += expand_fanout; // count the level-J sub-arrays
106 c9314fa4f757 6663908: NegativeArraySizeException is not thrown rasbold parents: 0 diff changeset	487 if (dim_con <= 0
0 a61af66fc99e Initial load duke parents: diff changeset	488 \|\| dim_con > expand_limit
a61af66fc99e Initial load duke parents: diff changeset	489 \|\| expand_count > expand_limit) {
a61af66fc99e Initial load duke parents: diff changeset	490 expand_count = 0;
a61af66fc99e Initial load duke parents: diff changeset	491 break;
a61af66fc99e Initial load duke parents: diff changeset	492 }
a61af66fc99e Initial load duke parents: diff changeset	493 }
a61af66fc99e Initial load duke parents: diff changeset	494
a61af66fc99e Initial load duke parents: diff changeset	495 // Can use multianewarray instead of [a]newarray if only one dimension,
a61af66fc99e Initial load duke parents: diff changeset	496 // or if all non-final dimensions are small constants.
1252 f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	497 if (ndimensions == 1 \|\| (1 <= expand_count && expand_count <= expand_limit)) {
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	498 Node* obj = NULL;
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	499 // Set the original stack and the reexecute bit for the interpreter
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	500 // to reexecute the multianewarray bytecode if deoptimization happens.
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	501 // Do it unconditionally even for one dimension multianewarray.
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	502 // Note: the reexecute bit will be set in GraphKit::add_safepoint_edges()
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	503 // when AllocateArray node for newarray is created.
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	504 { PreserveReexecuteState preexecs(this);
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	505 inc_sp(ndimensions);
1252 f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	506 // Pass 0 as nargs since uncommon trap code does not need to restore stack.
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	507 obj = expand_multianewarray(array_klass, &length[0], ndimensions, 0);
f516d5d7a019 6910605: C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used kvn parents: 1138 diff changeset	508 } //original reexecute and sp are set back here
0 a61af66fc99e Initial load duke parents: diff changeset	509 push(obj);
a61af66fc99e Initial load duke parents: diff changeset	510 return;
a61af66fc99e Initial load duke parents: diff changeset	511 }
a61af66fc99e Initial load duke parents: diff changeset	512
a61af66fc99e Initial load duke parents: diff changeset	513 address fun = NULL;
a61af66fc99e Initial load duke parents: diff changeset	514 switch (ndimensions) {
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	515 case 1: ShouldNotReachHere(); break;
0 a61af66fc99e Initial load duke parents: diff changeset	516 case 2: fun = OptoRuntime::multianewarray2_Java(); break;
a61af66fc99e Initial load duke parents: diff changeset	517 case 3: fun = OptoRuntime::multianewarray3_Java(); break;
a61af66fc99e Initial load duke parents: diff changeset	518 case 4: fun = OptoRuntime::multianewarray4_Java(); break;
a61af66fc99e Initial load duke parents: diff changeset	519 case 5: fun = OptoRuntime::multianewarray5_Java(); break;
a61af66fc99e Initial load duke parents: diff changeset	520 };
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	521 Node* c = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	522
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	523 if (fun != NULL) {
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	524 c = make_runtime_call(RC_NO_LEAF \| RC_NO_IO,
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	525 OptoRuntime::multianewarray_Type(ndimensions),
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	526 fun, NULL, TypeRawPtr::BOTTOM,
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	527 makecon(TypeKlassPtr::make(array_klass)),
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	528 length[0], length[1], length[2],
7999 4fcf990aa34a 8006807: C2 crash due to out of bounds array access in Parse::do_multianewarray drchase parents: 7428 diff changeset	529 (ndimensions > 2) ? length[3] : NULL,
4fcf990aa34a 8006807: C2 crash due to out of bounds array access in Parse::do_multianewarray drchase parents: 7428 diff changeset	530 (ndimensions > 3) ? length[4] : NULL);
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	531 } else {
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	532 // Create a java array for dimension sizes
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	533 Node* dims = NULL;
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	534 { PreserveReexecuteState preexecs(this);
7194 beebba0acc11 7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop() twisti parents: 6842 diff changeset	535 inc_sp(ndimensions);
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	536 Node* dims_array_klass = makecon(TypeKlassPtr::make(ciArrayKlass::make(ciType::make(T_INT))));
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	537 dims = new_array(dims_array_klass, intcon(ndimensions), 0);
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	538
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	539 // Fill-in it with values
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	540 for (j = 0; j < ndimensions; j++) {
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	541 Node *dims_elem = array_element_address(dims, intcon(j), T_INT);
14429 2113136690bc 8024921: PPC64 (part 113): Extend Load and Store nodes to know about memory ordering goetz parents: 12190 diff changeset	542 store_to_memory(control(), dims_elem, length[j], T_INT, TypeAryPtr::INTS, MemNode::unordered);
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	543 }
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	544 }
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	545
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	546 c = make_runtime_call(RC_NO_LEAF \| RC_NO_IO,
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	547 OptoRuntime::multianewarrayN_Type(),
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	548 OptoRuntime::multianewarrayN_Java(), NULL, TypeRawPtr::BOTTOM,
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	549 makecon(TypeKlassPtr::make(array_klass)),
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	550 dims);
263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	551 }
7428 2d6c433b1f38 8004741: Missing compiled exception handle table entry for multidimensional array allocation kvn parents: 7194 diff changeset	552 make_slow_call_ex(c, env()->Throwable_klass(), false);
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	553
6804 e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator kvn parents: 3902 diff changeset	554 Node* res = _gvn.transform(new (C) ProjNode(c, TypeFunc::Parms));
0 a61af66fc99e Initial load duke parents: diff changeset	555
a61af66fc99e Initial load duke parents: diff changeset	556 const Type* type = TypeOopPtr::make_from_klass_raw(array_klass);
a61af66fc99e Initial load duke parents: diff changeset	557
a61af66fc99e Initial load duke parents: diff changeset	558 // Improve the type: We know it's not null, exact, and of a given length.
a61af66fc99e Initial load duke parents: diff changeset	559 type = type->is_ptr()->cast_to_ptr_type(TypePtr::NotNull);
a61af66fc99e Initial load duke parents: diff changeset	560 type = type->is_aryptr()->cast_to_exactness(true);
a61af66fc99e Initial load duke parents: diff changeset	561
a61af66fc99e Initial load duke parents: diff changeset	562 const TypeInt* ltype = _gvn.find_int_type(length[0]);
a61af66fc99e Initial load duke parents: diff changeset	563 if (ltype != NULL)
a61af66fc99e Initial load duke parents: diff changeset	564 type = type->is_aryptr()->cast_to_size(ltype);
a61af66fc99e Initial load duke parents: diff changeset	565
3805 263247c478c5 7058510: multinewarray with 6 dimensions uncommon traps in server compiler iveresov parents: 2376 diff changeset	566 // We cannot sharpen the nested sub-arrays, since the top level is mutable.
0 a61af66fc99e Initial load duke parents: diff changeset	567
6804 e626685e9f6c 7193318: C2: remove number of inputs requirement from Node's new operator kvn parents: 3902 diff changeset	568 Node* cast = _gvn.transform( new (C) CheckCastPPNode(control(), res, type) );
0 a61af66fc99e Initial load duke parents: diff changeset	569 push(cast);
a61af66fc99e Initial load duke parents: diff changeset	570
a61af66fc99e Initial load duke parents: diff changeset	571 // Possible improvements:
a61af66fc99e Initial load duke parents: diff changeset	572 // - Make a fast path for small multi-arrays. (W/ implicit init. loops.)
a61af66fc99e Initial load duke parents: diff changeset	573 // - Issue CastII against length[*] values, to TypeInt::POS.
a61af66fc99e Initial load duke parents: diff changeset	574 }

Mercurial > hg > truffle

annotate src/share/vm/opto/parse3.cpp @ 14663:3edd4a71588b