--- a/js/src/jit/TypePolicy.h
+++ b/js/src/jit/TypePolicy.h
@@ -520,24 +520,16 @@ class ClampPolicy final : public TypePol
 
 class FilterTypeSetPolicy final : public TypePolicy
 {
   public:
     EMPTY_DATA_;
     virtual bool adjustInputs(TempAllocator& alloc, MInstruction* ins) override;
 };
 
-static inline bool
-CoercesToDouble(MIRType type)
-{
-    if (type == MIRType_Undefined || IsFloatingPointType(type))
-        return true;
-    return false;
-}
-
 #undef SPECIALIZATION_DATA_
 #undef INHERIT_DATA_
 #undef EMPTY_DATA_
 
 } // namespace jit
 } // namespace js
 
 #endif /* jit_TypePolicy_h */