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Unified Diff: src/full-codegen/mips64/full-codegen-mips64.cc

Issue 1722193002: [compiler] Drop the CompareNilIC. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: REBASE Created 4 years, 10 months ago
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Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index e3c30c1bafa77a6178b5d7c2779564b60b16a479..334b28be8e5b78ab4852210f951a903929be0913 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -4011,18 +4011,18 @@ void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr,
VisitForAccumulatorValue(sub_expr);
PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
- __ mov(a0, result_register());
if (expr->op() == Token::EQ_STRICT) {
Heap::RootListIndex nil_value = nil == kNullValue ?
Heap::kNullValueRootIndex :
Heap::kUndefinedValueRootIndex;
__ LoadRoot(a1, nil_value);
- Split(eq, a0, Operand(a1), if_true, if_false, fall_through);
- } else {
- Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil);
- CallIC(ic, expr->CompareOperationFeedbackId());
- __ LoadRoot(a1, Heap::kTrueValueRootIndex);
Split(eq, v0, Operand(a1), if_true, if_false, fall_through);
+ } else {
+ __ JumpIfSmi(v0, if_false);
+ __ ld(v0, FieldMemOperand(v0, HeapObject::kMapOffset));
+ __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset));
+ __ And(a1, a1, Operand(1 << Map::kIsUndetectable));
+ Split(ne, a1, Operand(zero_reg), if_true, if_false, fall_through);
}
context()->Plug(if_true, if_false);
}
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