src/ia32/lithium-ia32.h - Issue 14856015: Bias commutative single-use register inputs and support lea adds

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Unified Diff: src/ia32/lithium-ia32.h

Issue 14856015: Bias commutative single-use register inputs and support lea adds (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Review feedback Created 7 years, 7 months ago

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Index: src/ia32/lithium-ia32.h

diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h

index 062744ad9440cd9eb6462800d47be969777353b7..f5da47c7f64c325ad65f43e477086749f4d9d516 100644

--- a/src/ia32/lithium-ia32.h

+++ b/src/ia32/lithium-ia32.h

@@ -1369,6 +1369,11 @@ class LAddI: public LTemplateInstruction<1, 2, 0> {

LOperand* left() { return inputs_[0]; }

LOperand* right() { return inputs_[1]; }

+ static bool UseLea(HAdd* add) {

+ return !add->CheckFlag(HValue::kCanOverflow) &&

+ add->BetterLeftOperand()->UseCount() > 1;

+ }

DECLARE_CONCRETE_INSTRUCTION(AddI, "add-i")

DECLARE_HYDROGEN_ACCESSOR(Add)

};

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