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Issue 19528003: Unify SoftDeoptimize and Deoptimize hydrogen instructions (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Review feedback Created 7 years, 5 months ago
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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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