xref: /llvm-project/llvm/test/CodeGen/RISCV/vscale-demanded-bits.ll (revision 95d2d1cba0e1428718bbdce0504292f62b212920)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple riscv64 -mattr +v -filetype asm -o - %s | FileCheck %s
3
4declare i8 @llvm.vscale.i8()
5declare <vscale x 8 x i8> @llvm.stepvector.nxv8i8()
6
7define <vscale x 8 x i8> @f() #0 {
8; CHECK-LABEL: f:
9; CHECK:       # %bb.0: # %entry
10; CHECK-NEXT:    csrr a0, vlenb
11; CHECK-NEXT:    vsetvli a1, zero, e8, m1, ta, ma
12; CHECK-NEXT:    vid.v v8
13; CHECK-NEXT:    vadd.vx v8, v8, a0
14; CHECK-NEXT:    ret
15entry:
16  %0 = tail call i8 @llvm.vscale.i8()
17  %1 = shl i8 %0, 3
18  %.splat.insert = insertelement <vscale x 8 x i8> poison, i8 %1, i64 0
19  %.splat = shufflevector <vscale x 8 x i8> %.splat.insert, <vscale x 8 x i8> poison, <vscale x 8 x i32> zeroinitializer
20  %2 = tail call <vscale x 8 x i8> @llvm.stepvector.nxv8i8()
21  %3 = add <vscale x 8 x i8> %2, %.splat
22  ret <vscale x 8 x i8> %3
23}
24
25attributes #0 = { vscale_range(2,1024) }
26