src/crankshaft/x64/lithium-codegen-x64.cc - Issue 2028633002: Provide a tagged allocation top pointer.

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Unified Diff: src/crankshaft/x64/lithium-codegen-x64.cc

Issue 2028633002: Provide a tagged allocation top pointer. Base URL: https://chromium.googlesource.com/v8/v8.git@master

Patch Set: WIP: adding a few tests. Created 4 years, 6 months ago

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Index: src/crankshaft/x64/lithium-codegen-x64.cc

diff --git a/src/crankshaft/x64/lithium-codegen-x64.cc b/src/crankshaft/x64/lithium-codegen-x64.cc

index 0a2a0b687c02719dddfe28148f3cec4e2c40e00b..fb4ead00142f1dc93d45a7e10d5941308abb5736 100644

--- a/src/crankshaft/x64/lithium-codegen-x64.cc

+++ b/src/crankshaft/x64/lithium-codegen-x64.cc

@@ -5227,9 +5227,7 @@ void LCodeGen::DoDeferredAllocate(LAllocate* instr) {

// undo the allocation.

ExternalReference allocation_top =

AllocationUtils::GetAllocationTopReference(isolate(), allocation_flags);

- __ subp(rax, Immediate(kHeapObjectTag));

__ Store(allocation_top, rax);

- __ addp(rax, Immediate(kHeapObjectTag));

}

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