File: vscale-demanded-bits.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple riscv64 -mattr +v -filetype asm -o - %s | FileCheck %s

declare i8 @llvm.vscale.i8()
declare <vscale x 8 x i8> @llvm.experimental.stepvector.nxv8i8()

define <vscale x 8 x i8> @f() #0 {
; CHECK-LABEL: f:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    csrr a0, vlenb
; CHECK-NEXT:    vsetvli a1, zero, e8, m1, ta, ma
; CHECK-NEXT:    vid.v v8
; CHECK-NEXT:    vadd.vx v8, v8, a0
; CHECK-NEXT:    ret
entry:
  %0 = tail call i8 @llvm.vscale.i8()
  %1 = shl i8 %0, 3
  %.splat.insert = insertelement <vscale x 8 x i8> poison, i8 %1, i64 0
  %.splat = shufflevector <vscale x 8 x i8> %.splat.insert, <vscale x 8 x i8> poison, <vscale x 8 x i32> zeroinitializer
  %2 = tail call <vscale x 8 x i8> @llvm.experimental.stepvector.nxv8i8()
  %3 = add <vscale x 8 x i8> %2, %.splat
  ret <vscale x 8 x i8> %3
}

attributes #0 = { vscale_range(2,1024) }