test/CodeGen/AMDGPU/remove-short-exec-branches-gpr-idx-mode.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=si-pre-emit-peephole -amdgpu-skip-threshold=10 -verify-machineinstrs  %s -o - | FileCheck %s
# Make sure mandatory skips are not removed around mode defs.
# FIXME: -amdgpu-skip-threshold seems to be backwards.

---

name: need_skip_gpr_idx_mode
body: |
  ; CHECK-LABEL: name: need_skip_gpr_idx_mode
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   S_SET_GPR_IDX_MODE 0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0
  ; CHECK: bb.2:
  ; CHECK:   S_ENDPGM 0
  bb.0:
    S_CBRANCH_EXECZ %bb.2, implicit $exec

  bb.1:
    $vgpr0 = V_MOV_B32_e32 0, implicit $exec
    S_SET_GPR_IDX_MODE 0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0

  bb.2:
    S_ENDPGM 0
...

---

name: need_skip_gpr_idx_on
body: |
  ; CHECK-LABEL: name: need_skip_gpr_idx_on
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   S_SET_GPR_IDX_ON $sgpr0, 0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0
  ; CHECK: bb.2:
  ; CHECK:   S_ENDPGM 0
  bb.0:
    liveins: $sgpr0
    S_CBRANCH_EXECZ %bb.2, implicit $exec

  bb.1:
    liveins: $sgpr0
    $vgpr0 = V_MOV_B32_e32 0, implicit $exec
    S_SET_GPR_IDX_ON $sgpr0, 0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0

  bb.2:
    S_ENDPGM 0
...

---

name: need_skip_gpr_idx_off
body: |
  ; CHECK-LABEL: name: need_skip_gpr_idx_off
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   S_SET_GPR_IDX_OFF implicit-def $mode, implicit $mode
  ; CHECK: bb.2:
  ; CHECK:   S_ENDPGM 0
  bb.0:
    S_CBRANCH_EXECZ %bb.2, implicit $exec

  bb.1:
    $vgpr0 = V_MOV_B32_e32 0, implicit $exec
    S_SET_GPR_IDX_OFF implicit-def $mode, implicit $mode

  bb.2:
    S_ENDPGM 0
...

---

name: need_skip_gpr_idx_idx
body: |
  ; CHECK-LABEL: name: need_skip_gpr_idx_idx
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   S_SET_GPR_IDX_IDX $sgpr0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0
  ; CHECK: bb.2:
  ; CHECK:   S_ENDPGM 0
  bb.0:
    liveins: $sgpr0
    S_CBRANCH_EXECZ %bb.2, implicit $exec

  bb.1:
    liveins: $sgpr0
    $vgpr0 = V_MOV_B32_e32 0, implicit $exec
    S_SET_GPR_IDX_IDX $sgpr0, implicit-def $mode, implicit-def $m0, implicit $mode, implicit $m0

  bb.2:
    S_ENDPGM 0
...