[llvm] [GlobalISel] Preserve destination type kind when lowering G_EXTRACT (PR #218345)

[David Green via llvm-commits]

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@@ -9907,7 +9907,8 @@ LegalizerHelper::lowerExtract(MachineInstr &MI) {
        (SrcTy.isVector() && DstTy == SrcTy.getElementType()))) {
     LLT SrcIntTy = SrcTy;
     if (!SrcTy.isScalar()) {
-      SrcIntTy = LLT::scalar(SrcTy.getSizeInBits());
+      SrcIntTy = DstTy.isAnyScalar() ? LLT::scalar(SrcTy.getSizeInBits())
+                                     : LLT::integer(SrcTy.getSizeInBits());
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davemgreen wrote:

Can this just be LLT::integer(SrcTy.getSizeInBits()), given the uses of integer instructions in this function?

https://github.com/llvm/llvm-project/pull/218345