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

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

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

index cf76a086720a7282487f2d59ddd09f6938c79759..6c5d98a9483c493f29acdd8d35fc8a93464c1ecd 100644

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

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

@@ -162,7 +162,9 @@ bool LCodeGen::GeneratePrologue() {

// The following three instructions must remain together and unmodified

// for code aging to work properly.

__ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit());

- __ nop(ip.code());

+ // Pre-age code objects on low memory devices.

+ __ nop(isolate()->is_memory_constrained() ?

+ kPreAgeCodeNopType : kNoAgeCodeNopType);

// Adjust FP to point to saved FP.

__ add(fp, sp, Operand(2 * kPointerSize));

}