Ensure rewriting WithElement takes into account unsupported ISAs

dotnet · Jul 9, 2024 · ff45c4e · ff45c4e
1 parent af07a4a
commit ff45c4e
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/src/coreclr/jit/rationalize.cpp b/src/coreclr/jit/rationalize.cpp
@@ -372,6 +372,26 @@ void Rationalizer::RewriteHWIntrinsicAsUserCall(GenTree** use, ArrayStack<GenTre
  break;
  }
 
+#if defined(TARGET_XARCH)
+ if (varTypeIsIntegral(simdBaseType))
+ {
+ if (varTypeIsLong(simdBaseType))
+ {
+ if (!comp->compOpportunisticallyDependsOn(InstructionSet_SSE41_X64))
+ {
+ break;
+ }
+ }
+ else if (!varTypeIsShort(simdBaseType))
+ {
+ if (!comp->compOpportunisticallyDependsOn(InstructionSet_SSE41))
+ {
+ break;
+ }
+ }
+ }
+#endif // TARGET_XARCH
+
  result = comp->gtNewSimdWithElementNode(retType, op1, op2, op3, simdBaseJitType, simdSize);
  break;
  }