src/crankshaft/ia32/lithium-codegen-ia32.cc - Issue 2041103007: [es6] Fix prototype chain walk for instanceof.

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Unified Diff: src/crankshaft/ia32/lithium-codegen-ia32.cc

Issue 2041103007: [es6] Fix prototype chain walk for instanceof. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master

Patch Set: Created 4 years, 6 months ago

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Index: src/crankshaft/ia32/lithium-codegen-ia32.cc

diff --git a/src/crankshaft/ia32/lithium-codegen-ia32.cc b/src/crankshaft/ia32/lithium-codegen-ia32.cc

index 5c89cc746f0bfaba6c92e968d562dcb0f96b0222..ff6965f5da8934a3c3702dee464e96dde46d752c 100644

--- a/src/crankshaft/ia32/lithium-codegen-ia32.cc

+++ b/src/crankshaft/ia32/lithium-codegen-ia32.cc

@@ -2317,10 +2317,10 @@ void LCodeGen::DoHasInPrototypeChainAndBranch(

DeoptimizeIf(equal, instr, Deoptimizer::kProxy);

__ mov(object_prototype, FieldOperand(object_map, Map::kPrototypeOffset));

- __ cmp(object_prototype, prototype);

- EmitTrueBranch(instr, equal);

__ cmp(object_prototype, factory()->null_value());

EmitFalseBranch(instr, equal);

+ __ cmp(object_prototype, prototype);

+ EmitTrueBranch(instr, equal);

__ mov(object_map, FieldOperand(object_prototype, HeapObject::kMapOffset));

__ jmp(&loop);

}