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Issue 1267493006: Remove JSFunctionResultCache. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebase Created 5 years, 4 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #if V8_TARGET_ARCH_MIPS 7 #if V8_TARGET_ARCH_MIPS
8 8
9 // Note on Mips implementation: 9 // Note on Mips implementation:
10 // 10 //
(...skipping 4289 matching lines...) Expand 10 before | Expand all | Expand 10 after
4300 VisitForStackValue(args->at(1)); 4300 VisitForStackValue(args->at(1));
4301 VisitForAccumulatorValue(args->at(2)); 4301 VisitForAccumulatorValue(args->at(2));
4302 __ mov(a0, result_register()); 4302 __ mov(a0, result_register());
4303 __ pop(a1); 4303 __ pop(a1);
4304 __ pop(a2); 4304 __ pop(a2);
4305 __ CallStub(&stub); 4305 __ CallStub(&stub);
4306 context()->Plug(v0); 4306 context()->Plug(v0);
4307 } 4307 }
4308 4308
4309 4309
4310 void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) {
4311 ZoneList<Expression*>* args = expr->arguments();
4312 DCHECK_EQ(2, args->length());
4313
4314 DCHECK_NOT_NULL(args->at(0)->AsLiteral());
4315 int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->value()))->value();
4316
4317 Handle<FixedArray> jsfunction_result_caches(
4318 isolate()->native_context()->jsfunction_result_caches());
4319 if (jsfunction_result_caches->length() <= cache_id) {
4320 __ Abort(kAttemptToUseUndefinedCache);
4321 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
4322 context()->Plug(v0);
4323 return;
4324 }
4325
4326 VisitForAccumulatorValue(args->at(1));
4327
4328 Register key = v0;
4329 Register cache = a1;
4330 __ lw(cache, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
4331 __ lw(cache, FieldMemOperand(cache, GlobalObject::kNativeContextOffset));
4332 __ lw(cache,
4333 ContextOperand(
4334 cache, Context::JSFUNCTION_RESULT_CACHES_INDEX));
4335 __ lw(cache,
4336 FieldMemOperand(cache, FixedArray::OffsetOfElementAt(cache_id)));
4337
4338
4339 Label done, not_found;
4340 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1);
4341 __ lw(a2, FieldMemOperand(cache, JSFunctionResultCache::kFingerOffset));
4342 // a2 now holds finger offset as a smi.
4343 __ Addu(a3, cache, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
4344 // a3 now points to the start of fixed array elements.
4345 __ sll(at, a2, kPointerSizeLog2 - kSmiTagSize);
4346 __ addu(a3, a3, at);
4347 // a3 now points to key of indexed element of cache.
4348 __ lw(a2, MemOperand(a3));
4349 __ Branch(&not_found, ne, key, Operand(a2));
4350
4351 __ lw(v0, MemOperand(a3, kPointerSize));
4352 __ Branch(&done);
4353
4354 __ bind(&not_found);
4355 // Call runtime to perform the lookup.
4356 __ Push(cache, key);
4357 __ CallRuntime(Runtime::kGetFromCacheRT, 2);
4358
4359 __ bind(&done);
4360 context()->Plug(v0);
4361 }
4362
4363
4364 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) { 4310 void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
4365 ZoneList<Expression*>* args = expr->arguments(); 4311 ZoneList<Expression*>* args = expr->arguments();
4366 VisitForAccumulatorValue(args->at(0)); 4312 VisitForAccumulatorValue(args->at(0));
4367 4313
4368 Label materialize_true, materialize_false; 4314 Label materialize_true, materialize_false;
4369 Label* if_true = NULL; 4315 Label* if_true = NULL;
4370 Label* if_false = NULL; 4316 Label* if_false = NULL;
4371 Label* fall_through = NULL; 4317 Label* fall_through = NULL;
4372 context()->PrepareTest(&materialize_true, &materialize_false, 4318 context()->PrepareTest(&materialize_true, &materialize_false,
4373 &if_true, &if_false, &fall_through); 4319 &if_true, &if_false, &fall_through);
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5485 reinterpret_cast<uint32_t>( 5431 reinterpret_cast<uint32_t>(
5486 isolate->builtins()->OsrAfterStackCheck()->entry())); 5432 isolate->builtins()->OsrAfterStackCheck()->entry()));
5487 return OSR_AFTER_STACK_CHECK; 5433 return OSR_AFTER_STACK_CHECK;
5488 } 5434 }
5489 5435
5490 5436
5491 } // namespace internal 5437 } // namespace internal
5492 } // namespace v8 5438 } // namespace v8
5493 5439
5494 #endif // V8_TARGET_ARCH_MIPS 5440 #endif // V8_TARGET_ARCH_MIPS
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