Bug fix.

Author: anthonycanino

src/coreclr/jit/hwintrinsic.cpp

@@ -1772,6 +1772,26 @@ struct HWIntrinsicSignatureReader final
     {
         return JITtype2varType(op4JitType);
     }
+
+    var_types GetOp1TypeAsPrecise() const
+    {
+        return JitType2PreciseVarType(op1JitType);
+    }
+
+    var_types GetOp2TypeAsPrecise() const
+    {
+        return JitType2PreciseVarType(op2JitType);
+    }
+
+    var_types GetOp3TypeAsPrecise() const
+    {
+        return JitType2PreciseVarType(op3JitType);
+    }
+
+    var_types GetOp4TypeAsPrecise() const
+    {
+        return JitType2PreciseVarType(op4JitType);
+    }
 };
 
 //------------------------------------------------------------------------
@@ -1985,8 +2005,6 @@ GenTree* Compiler::impHWIntrinsic(NamedIntrinsic        intrinsic,
         }
     }
 
-    // LAST: in the middle of changes here
-
     simdBaseType      = getBaseTypeFromArgIfNeeded(intrinsic, sig, simdBaseType);
     unsigned simdSize = 0;
 
@@ -2353,7 +2371,7 @@ GenTree* Compiler::impHWIntrinsic(NamedIntrinsic        intrinsic,
                 {
                     // TODO-XArch-Cleanup: currently we use the simdBaseJitType to bring the type of the second argument
                     // to the code generator. May encode the overload info in other way.
-                    retNode->AsHWIntrinsic()->SetSimdBaseType(sigReader.GetOp2Type());
+                    retNode->AsHWIntrinsic()->SetSimdBaseType(sigReader.GetOp2TypeAsPrecise());
                 }
 #elif defined(TARGET_ARM64)
                 switch (intrinsic)
@@ -2362,7 +2380,7 @@ GenTree* Compiler::impHWIntrinsic(NamedIntrinsic        intrinsic,
                     case NI_Crc32_ComputeCrc32C:
                     case NI_Crc32_Arm64_ComputeCrc32:
                     case NI_Crc32_Arm64_ComputeCrc32C:
-                        retNode->AsHWIntrinsic()->SetSimdBaseType(sigReader.GetOp2Type());
+                        retNode->AsHWIntrinsic()->SetSimdBaseType(sigReader.GetOp2TypeAsPrecise());
                         break;
 
                     case NI_AdvSimd_AddWideningUpper: