[llvm] [DAG] SimplifyDemandedVectorElts - add handling for INT<->FP conversions (PR #117884)

[Simon Pilgrim via llvm-commits]

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@@ -11,9 +11,9 @@ declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) #0
 define void @draw_llvm_vs_variant0(<4 x float> %x) {
 ; CHECK-LABEL: draw_llvm_vs_variant0:
 ; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    lxsd v3, 0(r3)
-; CHECK-NEXT:    vmrghh v3, v3, v3
+; CHECK-NEXT:    lxsihzx v3, 0, r3
 ; CHECK-NEXT:    vextsh2w v3, v3
+; CHECK-NEXT:    xxmrghw v3, v3, v3
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RKSimon wrote:

@stefanp-ibm I'm assuming this change is neutral - is that correct?

https://github.com/llvm/llvm-project/pull/117884