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Issue 8775002: Simplify stack check instruction in Crankshaft. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 9 years ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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2196 set_deoptimization_environment(result->environment()); 2196 set_deoptimization_environment(result->environment());
2197 ClearInstructionPendingDeoptimizationEnvironment(); 2197 ClearInstructionPendingDeoptimizationEnvironment();
2198 return result; 2198 return result;
2199 } 2199 }
2200 2200
2201 return NULL; 2201 return NULL;
2202 } 2202 }
2203 2203
2204 2204
2205 LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { 2205 LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) {
2206 if (instr->is_function_entry()) { 2206 return AssignEnvironment(AssignPointerMap(new LStackCheck));
2207 return MarkAsCall(new LStackCheck, instr);
2208 } else {
2209 ASSERT(instr->is_backwards_branch());
2210 return AssignEnvironment(AssignPointerMap(new LStackCheck));
2211 }
2212 } 2207 }
2213 2208
2214 2209
2215 LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) { 2210 LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) {
2216 HEnvironment* outer = current_block_->last_environment(); 2211 HEnvironment* outer = current_block_->last_environment();
2217 HConstant* undefined = graph()->GetConstantUndefined(); 2212 HConstant* undefined = graph()->GetConstantUndefined();
2218 HEnvironment* inner = outer->CopyForInlining(instr->closure(), 2213 HEnvironment* inner = outer->CopyForInlining(instr->closure(),
2219 instr->function(), 2214 instr->function(),
2220 undefined, 2215 undefined,
2221 instr->call_kind()); 2216 instr->call_kind());
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2236 LOperand* key = UseOrConstantAtStart(instr->key()); 2231 LOperand* key = UseOrConstantAtStart(instr->key());
2237 LOperand* object = UseOrConstantAtStart(instr->object()); 2232 LOperand* object = UseOrConstantAtStart(instr->object());
2238 LIn* result = new LIn(key, object); 2233 LIn* result = new LIn(key, object);
2239 return MarkAsCall(DefineFixed(result, rax), instr); 2234 return MarkAsCall(DefineFixed(result, rax), instr);
2240 } 2235 }
2241 2236
2242 2237
2243 } } // namespace v8::internal 2238 } } // namespace v8::internal
2244 2239
2245 #endif // V8_TARGET_ARCH_X64 2240 #endif // V8_TARGET_ARCH_X64
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