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Unified Diff: src/crankshaft/arm/lithium-arm.cc

Issue 1899813003: [crankshaft] Fragmentation-free allocation folding. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 7 months ago
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Index: src/crankshaft/arm/lithium-arm.cc
diff --git a/src/crankshaft/arm/lithium-arm.cc b/src/crankshaft/arm/lithium-arm.cc
index 2e0f939d4f21c170eb29468363d4fbb433070176..d9ed7c3729f42e74bc67f12e78d2ac068bb0163d 100644
--- a/src/crankshaft/arm/lithium-arm.cc
+++ b/src/crankshaft/arm/lithium-arm.cc
@@ -2351,13 +2351,18 @@ LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) {
LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) {
- info()->MarkAsDeferredCalling();
- LOperand* context = UseAny(instr->context());
LOperand* size = UseRegisterOrConstant(instr->size());
LOperand* temp1 = TempRegister();
LOperand* temp2 = TempRegister();
- LAllocate* result = new(zone()) LAllocate(context, size, temp1, temp2);
- return AssignPointerMap(DefineAsRegister(result));
+ if (instr->IsAllocationFolded()) {
+ LFastAllocate* result = new (zone()) LFastAllocate(size, temp1, temp2);
+ return DefineAsRegister(result);
+ } else {
+ info()->MarkAsDeferredCalling();
+ LOperand* context = UseAny(instr->context());
+ LAllocate* result = new (zone()) LAllocate(context, size, temp1, temp2);
+ return AssignPointerMap(DefineAsRegister(result));
+ }
}
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