[llvm] [RISCV] Reverse (add x, (zext c)) back to (select c, (add x, 1), x) (PR #87236)

[Craig Topper via llvm-commits]

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@@ -168,13 +168,14 @@ define <8 x i64> @vaaddu_vv_v8i64_floor(<8 x i64> %x, <8 x i64> %y) {
 define <8 x i1> @vaaddu_vv_v8i1_floor(<8 x i1> %x, <8 x i1> %y) {
 ; CHECK-LABEL: vaaddu_vv_v8i1_floor:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    vsetivli zero, 8, e8, mf2, ta, ma
-; CHECK-NEXT:    vmv.v.i v9, 0
-; CHECK-NEXT:    vmerge.vim v10, v9, 1, v0
+; CHECK-NEXT:    vmv1r.v v9, v0
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topperc wrote:

Is this an improvement?

https://github.com/llvm/llvm-project/pull/87236