src/x64/lithium-codegen-x64.cc - Issue 23480031: Enable preaging of code objects when --optimize-for-size.

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

Issue 23480031: Enable preaging of code objects when --optimize-for-size. (Closed) Base URL: https://v8.googlecode.com/svn/trunk

Patch Set: Make pre-aging conditional on is_memory_constrained() Created 7 years, 3 months ago

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

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

index 836abe88776e64c9b5e67ea45bf7fe3c4cdd5ad2..8e812ea85a429f966cbbdac30887be7da4ea45e6 100644

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

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

@@ -166,7 +166,15 @@ bool LCodeGen::GeneratePrologue() {

frame_is_built_ = true;

__ push(rbp); // Caller's frame pointer.

__ movq(rbp, rsp);

- __ push(rsi); // Callee's context.

+ if (isolate()->is_memory_constrained()) {

+ // This sequence marks pre-aged code.

+ __ push(rsi); // Callee's context.

+ __ nop();

+ } else {

+ // This sequence marks non-aged code.

+ __ nop();

+ __ push(rsi); // Callee's context

+ }

if (info()->IsStub()) {

__ Push(Smi::FromInt(StackFrame::STUB));

} else {