[llvm] [NVPTX] pull in v2i32 build_vector through v2f32 bitcast (PR #153478)

[Alex MacLean via llvm-commits]

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@@ -5334,6 +5335,26 @@ static SDValue PerformANDCombine(SDNode *N,
   return SDValue();
 }
 
+static SDValue combineBitcast(SDNode *N, TargetLowering::DAGCombinerInfo &DCI) {
+  const SDValue &Input = N->getOperand(0);
+  const MVT FromVT = Input.getSimpleValueType();
+  const MVT ToVT = N->getSimpleValueType(0);
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AlexMaclean wrote:

What will happen if these are not simple types?

https://github.com/llvm/llvm-project/pull/153478