third_party/llvm-7.0/llvm/test/CodeGen/AMDGPU/insert-skips-kill-uncond.mir

# RUN: llc -march=amdgcn -mcpu=polaris10 -run-pass si-insert-skips -amdgpu-skip-threshold=1 %s -o - | FileCheck %s
# https://bugs.freedesktop.org/show_bug.cgi?id=99019
--- |
  define amdgpu_ps void @kill_uncond_branch() {
    ret void
  }
...
---

# CHECK-LABEL: name: kill_uncond_branch

# CHECK: bb.0:
# CHECK: S_CBRANCH_VCCNZ %bb.1, implicit $vcc

# CHECK: bb.1:
# CHECK: V_CMPX_LE_F32_e32
# CHECK-NEXT: S_CBRANCH_EXECNZ %bb.2, implicit $exec

# CHECK: bb.3:
# CHECK-NEXT: EXP_DONE
# CHECK: S_ENDPGM

# CHECK: bb.2:
# CHECK: S_ENDPGM

name: kill_uncond_branch

body: |
  bb.0:
    successors: %bb.1
    S_CBRANCH_VCCNZ %bb.1, implicit $vcc

  bb.1:
    successors: %bb.2
    $vgpr0 = V_MOV_B32_e32 0, implicit $exec
    SI_KILL_F32_COND_IMM_TERMINATOR $vgpr0, 0, 3, implicit-def $exec, implicit-def $vcc, implicit-def $scc, implicit $exec
    S_BRANCH %bb.2

  bb.2:
    S_ENDPGM