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-rw-r--r--js/src/jit/MIR.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h
index a398ef3344..ea00529e09 100644
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@@ -13156,6 +13156,30 @@ class MIsObject
return AliasSet::None();
}
};
+
+class MIsNullOrUndefined
+ : public MUnaryInstruction,
+ public BoxInputsPolicy::Data
+{
+ explicit MIsNullOrUndefined(MDefinition* object)
+ : MUnaryInstruction(object)
+ {
+ setResultType(MIRType::Boolean);
+ setMovable();
+ }
+
+ public:
+ INSTRUCTION_HEADER(IsNullOrUndefined)
+ TRIVIAL_NEW_WRAPPERS
+ NAMED_OPERANDS((0, object))
+
+ bool congruentTo(const MDefinition* ins) const override {
+ return congruentIfOperandsEqual(ins);
+ }
+ AliasSet getAliasSet() const override {
+ return AliasSet::None();
+ }
+};
class MHasClass
: public MUnaryInstruction,