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Issue 1072743002: [turbofan] Materialize JSFunction from frame if possible. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 8 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 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/compiler/code-generator.h" 5 #include "src/compiler/code-generator.h"
6 6
7 #include "src/arm64/macro-assembler-arm64.h" 7 #include "src/arm64/macro-assembler-arm64.h"
8 #include "src/compiler/code-generator-impl.h" 8 #include "src/compiler/code-generator-impl.h"
9 #include "src/compiler/gap-resolver.h" 9 #include "src/compiler/gap-resolver.h"
10 #include "src/compiler/node-matchers.h" 10 #include "src/compiler/node-matchers.h"
(...skipping 1108 matching lines...) Expand 10 before | Expand all | Expand 10 after
1119 __ Ldr(temp, src); 1119 __ Ldr(temp, src);
1120 __ Str(temp, g.ToMemOperand(destination, masm())); 1120 __ Str(temp, g.ToMemOperand(destination, masm()));
1121 } 1121 }
1122 } else if (source->IsConstant()) { 1122 } else if (source->IsConstant()) {
1123 Constant src = g.ToConstant(ConstantOperand::cast(source)); 1123 Constant src = g.ToConstant(ConstantOperand::cast(source));
1124 if (destination->IsRegister() || destination->IsStackSlot()) { 1124 if (destination->IsRegister() || destination->IsStackSlot()) {
1125 UseScratchRegisterScope scope(masm()); 1125 UseScratchRegisterScope scope(masm());
1126 Register dst = destination->IsRegister() ? g.ToRegister(destination) 1126 Register dst = destination->IsRegister() ? g.ToRegister(destination)
1127 : scope.AcquireX(); 1127 : scope.AcquireX();
1128 if (src.type() == Constant::kHeapObject) { 1128 if (src.type() == Constant::kHeapObject) {
1129 __ LoadObject(dst, src.ToHeapObject()); 1129 Handle<HeapObject> src_object = src.ToHeapObject();
1130 if (info()->IsOptimizing() &&
1131 src_object.is_identical_to(info()->context())) {
1132 // Loading the context from the frame is way cheaper than
1133 // materializing the actual context heap object address.
1134 __ Ldr(dst, MemOperand(fp, StandardFrameConstants::kContextOffset));
1135 } else if (info()->IsOptimizing() &&
1136 src_object.is_identical_to(info()->closure())) {
1137 // Loading the JSFunction from the frame is way cheaper than
1138 // materializing the actual JSFunction heap object address.
1139 __ Ldr(dst,
1140 MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
1141 } else {
1142 __ LoadObject(dst, src_object);
1143 }
1130 } else { 1144 } else {
1131 __ Mov(dst, g.ToImmediate(source)); 1145 __ Mov(dst, g.ToImmediate(source));
1132 } 1146 }
1133 if (destination->IsStackSlot()) { 1147 if (destination->IsStackSlot()) {
1134 __ Str(dst, g.ToMemOperand(destination, masm())); 1148 __ Str(dst, g.ToMemOperand(destination, masm()));
1135 } 1149 }
1136 } else if (src.type() == Constant::kFloat32) { 1150 } else if (src.type() == Constant::kFloat32) {
1137 if (destination->IsDoubleRegister()) { 1151 if (destination->IsDoubleRegister()) {
1138 FPRegister dst = g.ToDoubleRegister(destination).S(); 1152 FPRegister dst = g.ToDoubleRegister(destination).S();
1139 __ Fmov(dst, src.ToFloat32()); 1153 __ Fmov(dst, src.ToFloat32());
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1267 } 1281 }
1268 } 1282 }
1269 MarkLazyDeoptSite(); 1283 MarkLazyDeoptSite();
1270 } 1284 }
1271 1285
1272 #undef __ 1286 #undef __
1273 1287
1274 } // namespace compiler 1288 } // namespace compiler
1275 } // namespace internal 1289 } // namespace internal
1276 } // namespace v8 1290 } // namespace v8
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