[llvm] [RISCV] Use vwadd.vx for splat vector with extension (PR #87249)

[via llvm-commits]

================
@@ -1229,22 +1229,6 @@ define <vscale x 1 x i64> @ctlz_nxv1i64(<vscale x 1 x i64> %va) {
 ; RV64I-NEXT:    vsrl.vx v8, v8, a0
 ; RV64I-NEXT:    ret
 ;
-; CHECK-F-LABEL: ctlz_nxv1i64:
----------------
sun-jacobi wrote:

oops, I forgot to modify the prefix, thank you.

https://github.com/llvm/llvm-project/pull/87249