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Unified Diff: src/x64/code-stubs-x64.cc

Issue 1010803012: Merge cellspace into old pointer space (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 8 months ago
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Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index b25cf79ee5ab0118df6b29875345e8ad85600971..401db6b3fbfc6af98c7f0e3eee01997106eb3127 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -2754,6 +2754,12 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
__ movp(kScratchRegister,
Operand(kScratchRegister, kOffsetToMapCheckValue));
__ movp(Operand(kScratchRegister, 0), map);
+
+ __ movp(r8, map);
+ // Scratch points at the cell payload. Calculate the start of the object.
+ __ subp(kScratchRegister, Immediate(Cell::kValueOffset - 1));
+ __ RecordWriteField(kScratchRegister, Cell::kValueOffset, r8, function,
+ kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
}
// Loop through the prototype chain looking for the function prototype.
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