Mercurial > hg > truffle
annotate src/share/vm/opto/output.hpp @ 12604:7328f7def427
Support more convert operations.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 25 Oct 2013 15:44:35 +0200 |
parents | d1034bd8cefc |
children | de6a9e811145 e2722a66aba7 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OPTO_OUTPUT_HPP |
26 #define SHARE_VM_OPTO_OUTPUT_HPP | |
27 | |
28 #include "opto/block.hpp" | |
29 #include "opto/node.hpp" | |
30 #ifdef TARGET_ARCH_MODEL_x86_32 | |
31 # include "adfiles/ad_x86_32.hpp" | |
32 #endif | |
33 #ifdef TARGET_ARCH_MODEL_x86_64 | |
34 # include "adfiles/ad_x86_64.hpp" | |
35 #endif | |
36 #ifdef TARGET_ARCH_MODEL_sparc | |
37 # include "adfiles/ad_sparc.hpp" | |
38 #endif | |
39 #ifdef TARGET_ARCH_MODEL_zero | |
40 # include "adfiles/ad_zero.hpp" | |
41 #endif | |
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42 #ifdef TARGET_ARCH_MODEL_arm |
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43 # include "adfiles/ad_arm.hpp" |
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44 #endif |
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45 #ifdef TARGET_ARCH_MODEL_ppc |
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46 # include "adfiles/ad_ppc.hpp" |
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47 #endif |
1972 | 48 |
0 | 49 class Arena; |
50 class Bundle; | |
51 class Block; | |
52 class Block_Array; | |
53 class Node; | |
54 class Node_Array; | |
55 class Node_List; | |
56 class PhaseCFG; | |
57 class PhaseChaitin; | |
58 class Pipeline_Use_Element; | |
59 class Pipeline_Use; | |
60 | |
61 #ifndef PRODUCT | |
62 #define DEBUG_ARG(x) , x | |
63 #else | |
64 #define DEBUG_ARG(x) | |
65 #endif | |
66 | |
67 // Define the initial sizes for allocation of the resizable code buffer | |
68 enum { | |
69 initial_code_capacity = 16 * 1024, | |
70 initial_stub_capacity = 4 * 1024, | |
71 initial_const_capacity = 4 * 1024, | |
72 initial_locs_capacity = 3 * 1024 | |
73 }; | |
74 | |
75 //------------------------------Scheduling---------------------------------- | |
76 // This class contains all the information necessary to implement instruction | |
77 // scheduling and bundling. | |
78 class Scheduling { | |
79 | |
80 private: | |
81 // Arena to use | |
82 Arena *_arena; | |
83 | |
84 // Control-Flow Graph info | |
85 PhaseCFG *_cfg; | |
86 | |
87 // Register Allocation info | |
88 PhaseRegAlloc *_regalloc; | |
89 | |
90 // Number of nodes in the method | |
91 uint _node_bundling_limit; | |
92 | |
93 // List of scheduled nodes. Generated in reverse order | |
94 Node_List _scheduled; | |
95 | |
96 // List of nodes currently available for choosing for scheduling | |
97 Node_List _available; | |
98 | |
99 // For each instruction beginning a bundle, the number of following | |
100 // nodes to be bundled with it. | |
101 Bundle *_node_bundling_base; | |
102 | |
103 // Mapping from register to Node | |
104 Node_List _reg_node; | |
105 | |
106 // Free list for pinch nodes. | |
107 Node_List _pinch_free_list; | |
108 | |
109 // Latency from the beginning of the containing basic block (base 1) | |
110 // for each node. | |
111 unsigned short *_node_latency; | |
112 | |
113 // Number of uses of this node within the containing basic block. | |
114 short *_uses; | |
115 | |
116 // Schedulable portion of current block. Skips Region/Phi/CreateEx up | |
117 // front, branch+proj at end. Also skips Catch/CProj (same as | |
118 // branch-at-end), plus just-prior exception-throwing call. | |
119 uint _bb_start, _bb_end; | |
120 | |
121 // Latency from the end of the basic block as scheduled | |
122 unsigned short *_current_latency; | |
123 | |
124 // Remember the next node | |
125 Node *_next_node; | |
126 | |
127 // Use this for an unconditional branch delay slot | |
128 Node *_unconditional_delay_slot; | |
129 | |
130 // Pointer to a Nop | |
131 MachNopNode *_nop; | |
132 | |
133 // Length of the current bundle, in instructions | |
134 uint _bundle_instr_count; | |
135 | |
136 // Current Cycle number, for computing latencies and bundling | |
137 uint _bundle_cycle_number; | |
138 | |
139 // Bundle information | |
140 Pipeline_Use_Element _bundle_use_elements[resource_count]; | |
141 Pipeline_Use _bundle_use; | |
142 | |
143 // Dump the available list | |
144 void dump_available() const; | |
145 | |
146 public: | |
147 Scheduling(Arena *arena, Compile &compile); | |
148 | |
149 // Destructor | |
150 NOT_PRODUCT( ~Scheduling(); ) | |
151 | |
152 // Step ahead "i" cycles | |
153 void step(uint i); | |
154 | |
155 // Step ahead 1 cycle, and clear the bundle state (for example, | |
156 // at a branch target) | |
157 void step_and_clear(); | |
158 | |
159 Bundle* node_bundling(const Node *n) { | |
160 assert(valid_bundle_info(n), "oob"); | |
161 return (&_node_bundling_base[n->_idx]); | |
162 } | |
163 | |
164 bool valid_bundle_info(const Node *n) const { | |
165 return (_node_bundling_limit > n->_idx); | |
166 } | |
167 | |
168 bool starts_bundle(const Node *n) const { | |
169 return (_node_bundling_limit > n->_idx && _node_bundling_base[n->_idx].starts_bundle()); | |
170 } | |
171 | |
172 // Do the scheduling | |
173 void DoScheduling(); | |
174 | |
175 // Compute the local latencies walking forward over the list of | |
176 // nodes for a basic block | |
177 void ComputeLocalLatenciesForward(const Block *bb); | |
178 | |
179 // Compute the register antidependencies within a basic block | |
180 void ComputeRegisterAntidependencies(Block *bb); | |
181 void verify_do_def( Node *n, OptoReg::Name def, const char *msg ); | |
182 void verify_good_schedule( Block *b, const char *msg ); | |
183 void anti_do_def( Block *b, Node *def, OptoReg::Name def_reg, int is_def ); | |
184 void anti_do_use( Block *b, Node *use, OptoReg::Name use_reg ); | |
185 | |
186 // Add a node to the current bundle | |
187 void AddNodeToBundle(Node *n, const Block *bb); | |
188 | |
189 // Add a node to the list of available nodes | |
190 void AddNodeToAvailableList(Node *n); | |
191 | |
192 // Compute the local use count for the nodes in a block, and compute | |
193 // the list of instructions with no uses in the block as available | |
194 void ComputeUseCount(const Block *bb); | |
195 | |
196 // Choose an instruction from the available list to add to the bundle | |
197 Node * ChooseNodeToBundle(); | |
198 | |
199 // See if this Node fits into the currently accumulating bundle | |
200 bool NodeFitsInBundle(Node *n); | |
201 | |
202 // Decrement the use count for a node | |
203 void DecrementUseCounts(Node *n, const Block *bb); | |
204 | |
205 // Garbage collect pinch nodes for reuse by other blocks. | |
206 void garbage_collect_pinch_nodes(); | |
207 // Clean up a pinch node for reuse (helper for above). | |
208 void cleanup_pinch( Node *pinch ); | |
209 | |
210 // Information for statistics gathering | |
211 #ifndef PRODUCT | |
212 private: | |
213 // Gather information on size of nops relative to total | |
214 uint _branches, _unconditional_delays; | |
215 | |
216 static uint _total_nop_size, _total_method_size; | |
217 static uint _total_branches, _total_unconditional_delays; | |
218 static uint _total_instructions_per_bundle[Pipeline::_max_instrs_per_cycle+1]; | |
219 | |
220 public: | |
221 static void print_statistics(); | |
222 | |
223 static void increment_instructions_per_bundle(uint i) { | |
224 _total_instructions_per_bundle[i]++; | |
225 } | |
226 | |
227 static void increment_nop_size(uint s) { | |
228 _total_nop_size += s; | |
229 } | |
230 | |
231 static void increment_method_size(uint s) { | |
232 _total_method_size += s; | |
233 } | |
234 #endif | |
235 | |
236 }; | |
1972 | 237 |
238 #endif // SHARE_VM_OPTO_OUTPUT_HPP |