llvm/test/CodeGen/AMDGPU/skip-branch-taildup-ret.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=si-insert-skips -amdgpu-skip-threshold-legacy=1000000 -o -  %s | FileCheck %s

---
name: skip_branch_taildup_endpgm
machineFunctionInfo:
  isEntryFunction: true
body:             |
  ; CHECK-LABEL: name: skip_branch_taildup_endpgm
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.3(0x40000000), %bb.1(0x40000000)
  ; CHECK:   renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 4, 0, 0 :: (dereferenceable invariant load 8, align 16, addrspace 4)
  ; CHECK:   renamable $vgpr0 = V_LSHLREV_B32_e32 2, killed $vgpr0, implicit $exec
  ; CHECK:   S_WAITCNT 127
  ; CHECK:   $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit $exec
  ; CHECK:   renamable $vgpr0 = V_ADD_I32_e32 $sgpr0, killed $vgpr0, implicit-def $vcc, implicit $exec
  ; CHECK:   renamable $vgpr1 = V_ADDC_U32_e32 0, killed $vgpr1, implicit-def $vcc, implicit killed $vcc, implicit $exec
  ; CHECK:   renamable $vgpr0 = FLAT_LOAD_DWORD renamable $vgpr0_vgpr1, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (load 4, addrspace 1)
  ; CHECK:   renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM killed renamable $sgpr4_sgpr5, 0, 0, 0 :: (dereferenceable invariant load 8, align 16, addrspace 4)
  ; CHECK:   S_WAITCNT 112
  ; CHECK:   V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
  ; CHECK:   $sgpr2_sgpr3 = S_AND_SAVEEXEC_B64 $vcc, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   renamable $sgpr2_sgpr3 = S_XOR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def dead $scc
  ; CHECK:   SI_MASK_BRANCH %bb.1, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; CHECK:   S_BRANCH %bb.3
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.4(0x40000000), %bb.2(0x40000000)
  ; CHECK:   renamable $sgpr2_sgpr3 = S_OR_SAVEEXEC_B64 killed renamable $sgpr2_sgpr3, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   $exec = S_XOR_B64 $exec, renamable $sgpr2_sgpr3, implicit-def $scc
  ; CHECK:   SI_MASK_BRANCH %bb.2, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK:   S_BRANCH %bb.4
  ; CHECK: bb.2:
  ; CHECK:   $exec = S_OR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def $scc
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
  ; CHECK:   S_ENDPGM 0
  ; CHECK: bb.3:
  ; CHECK:   successors: %bb.4(0x40000000), %bb.2(0x40000000)
  ; CHECK:   renamable $vgpr2 = V_MOV_B32_e32 15, implicit $exec
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
  ; CHECK:   $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
  ; CHECK:   renamable $sgpr2_sgpr3 = S_OR_SAVEEXEC_B64 killed renamable $sgpr2_sgpr3, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   $exec = S_XOR_B64 $exec, renamable $sgpr2_sgpr3, implicit-def $scc
  ; CHECK:   SI_MASK_BRANCH %bb.2, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.4:
  ; CHECK:   renamable $vgpr2 = V_MOV_B32_e32 8, implicit $exec
  ; CHECK:   $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
  ; CHECK:   $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit killed $sgpr0_sgpr1, implicit $exec
  ; CHECK:   $exec = S_OR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def $scc
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
  ; CHECK:   S_ENDPGM 0
  bb.0:
    successors: %bb.1, %bb.2
    liveins: $vgpr0, $sgpr4_sgpr5, $sgpr7

    renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 4, 0, 0 :: (dereferenceable invariant load 8, align 16, addrspace 4)
    renamable $vgpr0 = V_LSHLREV_B32_e32 2, killed $vgpr0, implicit $exec
    S_WAITCNT 127
    $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit $exec
    renamable $vgpr0 = V_ADD_I32_e32 $sgpr0, killed $vgpr0, implicit-def $vcc, implicit $exec
    renamable $vgpr1 = V_ADDC_U32_e32 0, killed $vgpr1, implicit-def $vcc, implicit killed $vcc, implicit $exec
    renamable $vgpr0 = FLAT_LOAD_DWORD renamable $vgpr0_vgpr1, 0, 0, 0, 0, implicit $exec, implicit $flat_scr :: (load 4, addrspace 1)
    renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM killed renamable $sgpr4_sgpr5, 0, 0, 0 :: (dereferenceable invariant load 8, align 16, addrspace 4)
    S_WAITCNT 112
    V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
    $sgpr2_sgpr3 = S_AND_SAVEEXEC_B64 $vcc, implicit-def $exec, implicit-def $scc, implicit $exec
    renamable $sgpr2_sgpr3 = S_XOR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def dead $scc
    SI_MASK_BRANCH %bb.2, implicit $exec
    S_BRANCH %bb.1

  bb.2:
    successors: %bb.3, %bb.4
    liveins: $sgpr0_sgpr1, $sgpr2_sgpr3

    renamable $sgpr2_sgpr3 = S_OR_SAVEEXEC_B64 killed renamable $sgpr2_sgpr3, implicit-def $exec, implicit-def $scc, implicit $exec
    $exec = S_XOR_B64 $exec, renamable $sgpr2_sgpr3, implicit-def $scc
    SI_MASK_BRANCH %bb.4, implicit $exec
    S_BRANCH %bb.3

  bb.4:
    liveins: $sgpr2_sgpr3

    $exec = S_OR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def $scc
    renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
    S_ENDPGM 0

  bb.1:
    successors: %bb.3, %bb.4
    liveins: $sgpr0_sgpr1, $sgpr2_sgpr3

    renamable $vgpr2 = V_MOV_B32_e32 15, implicit $exec
    $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
    $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
    renamable $sgpr2_sgpr3 = S_OR_SAVEEXEC_B64 killed renamable $sgpr2_sgpr3, implicit-def $exec, implicit-def $scc, implicit $exec
    $exec = S_XOR_B64 $exec, renamable $sgpr2_sgpr3, implicit-def $scc
    SI_MASK_BRANCH %bb.4, implicit $exec
    S_BRANCH %bb.3

  bb.3:
    liveins: $sgpr0_sgpr1, $sgpr2_sgpr3

    renamable $vgpr2 = V_MOV_B32_e32 8, implicit $exec
    $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
    $vgpr1 = V_MOV_B32_e32 $sgpr1, implicit $exec, implicit killed $sgpr0_sgpr1, implicit $exec
    $exec = S_OR_B64 $exec, killed renamable $sgpr2_sgpr3, implicit-def $scc
    renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
    S_ENDPGM 0

...

---
name: skip_branch_taildup_ret
body:             |
  ; CHECK-LABEL: name: skip_branch_taildup_ret
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.3(0x40000000), %bb.1(0x40000000)
  ; CHECK:   S_WAITCNT 0
  ; CHECK:   V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
  ; CHECK:   $sgpr6_sgpr7 = S_AND_SAVEEXEC_B64 $vcc, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   renamable $sgpr6_sgpr7 = S_XOR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def dead $scc
  ; CHECK:   SI_MASK_BRANCH %bb.1, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; CHECK:   S_BRANCH %bb.3
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.4(0x40000000), %bb.2(0x40000000)
  ; CHECK:   renamable $sgpr6_sgpr7 = S_OR_SAVEEXEC_B64 killed renamable $sgpr6_sgpr7, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   $exec = S_XOR_B64 $exec, renamable $sgpr6_sgpr7, implicit-def $scc
  ; CHECK:   SI_MASK_BRANCH %bb.2, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK:   S_BRANCH %bb.4
  ; CHECK: bb.2:
  ; CHECK:   $exec = S_OR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def $scc
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
  ; CHECK:   S_SETPC_B64_return $sgpr30_sgpr31
  ; CHECK: bb.3:
  ; CHECK:   successors: %bb.4(0x40000000), %bb.2(0x40000000)
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 15, implicit $exec
  ; CHECK:   renamable $sgpr6_sgpr7 = S_OR_SAVEEXEC_B64 killed renamable $sgpr6_sgpr7, implicit-def $exec, implicit-def $scc, implicit $exec
  ; CHECK:   $exec = S_XOR_B64 $exec, renamable $sgpr6_sgpr7, implicit-def $scc
  ; CHECK:   SI_MASK_BRANCH %bb.2, implicit $exec
  ; CHECK:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; CHECK: bb.4:
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 8, implicit $exec
  ; CHECK:   $exec = S_OR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def $scc
  ; CHECK:   renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
  ; CHECK:   S_SETPC_B64_return $sgpr30_sgpr31
  bb.0:
    successors: %bb.1, %bb.2
    liveins: $vgpr0, $sgpr30_sgpr31, $vgpr1_vgpr2

    S_WAITCNT 0
    V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
    $sgpr6_sgpr7 = S_AND_SAVEEXEC_B64 $vcc, implicit-def $exec, implicit-def $scc, implicit $exec
    renamable $sgpr6_sgpr7 = S_XOR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def dead $scc
    SI_MASK_BRANCH %bb.2, implicit $exec
    S_BRANCH %bb.1

  bb.2:
    successors: %bb.3, %bb.4
    liveins: $sgpr6_sgpr7, $sgpr30_sgpr31, $vgpr1_vgpr2

    renamable $sgpr6_sgpr7 = S_OR_SAVEEXEC_B64 killed renamable $sgpr6_sgpr7, implicit-def $exec, implicit-def $scc, implicit $exec
    $exec = S_XOR_B64 $exec, renamable $sgpr6_sgpr7, implicit-def $scc
    SI_MASK_BRANCH %bb.4, implicit $exec
    S_BRANCH %bb.3

  bb.4:
    liveins: $sgpr6_sgpr7, $sgpr30_sgpr31

    $exec = S_OR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def $scc
    renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
    S_SETPC_B64_return $sgpr30_sgpr31

  bb.1:
    successors: %bb.3, %bb.4
    liveins: $sgpr6_sgpr7, $sgpr30_sgpr31, $vgpr1_vgpr2

    renamable $vgpr0 = V_MOV_B32_e32 15, implicit $exec
    renamable $sgpr6_sgpr7 = S_OR_SAVEEXEC_B64 killed renamable $sgpr6_sgpr7, implicit-def $exec, implicit-def $scc, implicit $exec
    $exec = S_XOR_B64 $exec, renamable $sgpr6_sgpr7, implicit-def $scc
    SI_MASK_BRANCH %bb.4, implicit $exec
    S_BRANCH %bb.3

  bb.3:
    liveins: $sgpr6_sgpr7, $sgpr30_sgpr31, $vgpr1_vgpr2

    renamable $vgpr0 = V_MOV_B32_e32 8, implicit $exec
    $exec = S_OR_B64 $exec, killed renamable $sgpr6_sgpr7, implicit-def $scc
    renamable $vgpr0 = V_MOV_B32_e32 32, implicit $exec
    S_SETPC_B64_return $sgpr30_sgpr31

...