[llvm] [CodeGen] Fix EVT::changeVectorElementType assertion on simple-to-extended fallback (PR #173413)

[Craig Topper via llvm-commits]

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@@ -4215,7 +4216,8 @@ SDValue AMDGPUTargetLowering::performSraCombine(SDNode *N,
 
   EVT ElementType = VT.getScalarType();
   EVT TargetScalarType = ElementType.getHalfSizedIntegerVT(*DAG.getContext());
-  EVT TargetType = VT.isVector() ? VT.changeVectorElementType(TargetScalarType)
+  EVT TargetType = VT.isVector() ? VT.changeVectorElementType(*DAG.getContext(),
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topperc wrote:

Can we use `changeElementType` here?

https://github.com/llvm/llvm-project/pull/173413