Ensure CNS_VEC and BLK are handled for `setLclRelatedToSIMDIntrinsic` (#81760)

src/coreclr/jit/gentree.cpp

@@ -8166,11 +8166,12 @@ GenTree* Compiler::gtNewBlkOpNode(GenTree* dst, GenTree* srcOrFillVal, bool isVo
     // should be labeled as simd intrinsic related struct. This is done so that
     // we do not promote the local, thus avoiding conflicting access methods
     // (fields vs. whole-register).
-    if (varTypeIsSIMD(srcOrFillVal) && srcOrFillVal->OperIsHWIntrinsic())
+    if (varTypeIsSIMD(srcOrFillVal) && srcOrFillVal->OperIs(GT_HWINTRINSIC, GT_CNS_VEC))
     {
         // TODO-Cleanup: similar logic already exists in "gtNewAssignNode",
         // however, it is not enabled for x86. Fix that and delete this code.
         GenTreeLclVar* dstLclNode = nullptr;
+
         if (dst->OperIs(GT_LCL_VAR))
         {
             dstLclNode = dst->AsLclVar();
@@ -18853,7 +18854,7 @@ void Compiler::SetOpLclRelatedToSIMDIntrinsic(GenTree* op)
     {
         setLclRelatedToSIMDIntrinsic(op);
     }
-    else if (op->OperIs(GT_OBJ) && op->AsIndir()->Addr()->OperIs(GT_LCL_VAR_ADDR))
+    else if (op->OperIsBlk() && op->AsIndir()->Addr()->OperIs(GT_LCL_VAR_ADDR))
     {
         setLclRelatedToSIMDIntrinsic(op->AsIndir()->Addr());
     }