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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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394 loop_side_effects_[i].RemoveAll(); | 394 loop_side_effects_[i].RemoveAll(); |
395 } | 395 } |
396 for (int i = graph()->blocks()->length() - 1; i >= 0; --i) { | 396 for (int i = graph()->blocks()->length() - 1; i >= 0; --i) { |
397 // Compute side effects for the block. | 397 // Compute side effects for the block. |
398 HBasicBlock* block = graph()->blocks()->at(i); | 398 HBasicBlock* block = graph()->blocks()->at(i); |
399 int id = block->block_id(); | 399 int id = block->block_id(); |
400 GVNFlagSet side_effects; | 400 GVNFlagSet side_effects; |
401 for (HInstructionIterator it(block); !it.Done(); it.Advance()) { | 401 for (HInstructionIterator it(block); !it.Done(); it.Advance()) { |
402 HInstruction* instr = it.Current(); | 402 HInstruction* instr = it.Current(); |
403 side_effects.Add(instr->ChangesFlags()); | 403 side_effects.Add(instr->ChangesFlags()); |
404 if (instr->IsSoftDeoptimize()) { | 404 if (instr->IsDeoptimize()) { |
405 block_side_effects_[id].RemoveAll(); | 405 block_side_effects_[id].RemoveAll(); |
406 side_effects.RemoveAll(); | 406 side_effects.RemoveAll(); |
407 break; | 407 break; |
408 } | 408 } |
409 } | 409 } |
410 block_side_effects_[id].Add(side_effects); | 410 block_side_effects_[id].Add(side_effects); |
411 | 411 |
412 // Loop headers are part of their loop. | 412 // Loop headers are part of their loop. |
413 if (block->IsLoopHeader()) { | 413 if (block->IsLoopHeader()) { |
414 loop_side_effects_[id].Add(side_effects); | 414 loop_side_effects_[id].Add(side_effects); |
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846 dominated); | 846 dominated); |
847 successor_map->Kill(side_effects_on_all_paths); | 847 successor_map->Kill(side_effects_on_all_paths); |
848 successor_dominators->Kill(side_effects_on_all_paths); | 848 successor_dominators->Kill(side_effects_on_all_paths); |
849 } | 849 } |
850 } | 850 } |
851 current = next; | 851 current = next; |
852 } | 852 } |
853 } | 853 } |
854 | 854 |
855 } } // namespace v8::internal | 855 } } // namespace v8::internal |
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