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-rw-r--r--js/src/jit/CodeGenerator.cpp26
1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jit/CodeGenerator.cpp b/js/src/jit/CodeGenerator.cpp
index 7b2f8214ba..16d0260929 100644
--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@@ -11529,6 +11529,32 @@ CodeGenerator::visitHasClass(LHasClass* ins)
}
void
+CodeGenerator::visitGuardToClass(LGuardToClass* ins)
+{
+ Register lhs = ToRegister(ins->lhs());
+ Register output = ToRegister(ins->output());
+ Register temp = ToRegister(ins->temp());
+
+ Label notEqual;
+
+ masm.branchTestObjClass(Assembler::NotEqual, lhs, temp, ins->mir()->getClass(), &notEqual);
+ masm.mov(lhs, output);
+
+ if (ins->mir()->type() == MIRType::Object) {
+ // Can't return null-return here, so bail
+ bailoutFrom(&notEqual, ins->snapshot());
+ } else {
+ Label done;
+ masm.jump(&done);
+
+ masm.bind(&notEqual);
+ masm.mov(ImmPtr(0), output);
+
+ masm.bind(&done);
+ }
+}
+
+void
CodeGenerator::visitWasmParameter(LWasmParameter* lir)
{
}