llvm/test/CodeGen/AMDGPU/wwm-spill-superclass-pseudo.mir

# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -start-before=si-lower-sgpr-spills -stop-after=greedy,1 -verify-machineinstrs --stress-regalloc=2 -o - %s | FileCheck -check-prefix GCN-REGALLOC %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -start-before=si-lower-sgpr-spills -stop-after=virtregrewriter,1 -verify-machineinstrs --stress-regalloc=2 -o - %s | FileCheck -check-prefix GCN-REWRITER %s

name:            test_wwm_reg_superclass_spill
tracksRegLiveness: true
stack:
  - { id: 0, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8,
      stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true}
machineFunctionInfo:
  isEntryFunction: true
  stackPtrOffsetReg: '$sgpr32'
  sgprForEXECCopy:   '$sgpr100_sgpr101'
body:             |
  bb.0:
    ; GCN-REGALLOC-NUM-2: %{{[0-9]+}}:av_32 = SI_SPILL_WWM_AV32_RESTORE
    ; GCN-REGALLOC: S_ENDPGM 0
    ;
    ; GCN-REWRITER-NUM-2: renamable $vgpr0 = SI_SPILL_WWM_AV32_RESTORE
    ; GCN-REWRITER: S_ENDPGM 0
    $vgpr0 = IMPLICIT_DEF
    $sgpr0_sgpr1 = IMPLICIT_DEF
    %temp0:vgpr_32(s32) = COPY $vgpr0
    %temp1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    $vcc = S_AND_B64 $exec, $sgpr0_sgpr1, implicit-def dead $scc
    S_CBRANCH_VCCNZ %bb.2, implicit $vcc
    S_BRANCH %bb.1

  bb.1:
    %temp2:vreg_64 = IMPLICIT_DEF
    %temp1:vgpr_32 = FLAT_LOAD_DWORD %temp2, 0, 0, implicit $exec, implicit $flat_scr

  bb.2:
    %temp3:vreg_64 = V_MOV_B64_PSEUDO 0, implicit $exec
    $sgpr2_sgpr3 = IMPLICIT_DEF
    $sgpr4_sgpr5 = IMPLICIT_DEF
    %temp4:vgpr_32 = FLAT_LOAD_UBYTE %temp3, 0, 0, implicit $exec, implicit $flat_scr
    S_CBRANCH_EXECZ %bb.5, implicit $exec
    S_BRANCH %bb.4

  bb.3:
    S_BRANCH %bb.8

  bb.4:
    liveins: $sgpr0_sgpr1, $sgpr2_sgpr3, $sgpr4_sgpr5
    SI_SPILL_S64_SAVE killed $sgpr2_sgpr3, %stack.0, implicit $exec, implicit $sgpr32
    $sgpr56_sgpr57 = S_LOAD_DWORDX2_IMM $sgpr4_sgpr5, 48, 0
    $sgpr2 = S_MOV_B32 124
    %temp5:vreg_64 = COPY  $sgpr56_sgpr57
    %temp6:vreg_64, dead  $sgpr2_sgpr3 = V_MAD_U64_U32_e64 %temp0(s32), killed $sgpr2, %temp5, 0, implicit $exec
    %temp7:vreg_64 = V_MOV_B64_PSEUDO 0, implicit $exec
    undef %temp8.sub0:vreg_64 = FLAT_LOAD_DWORD %temp7, 0, 0, implicit $exec, implicit $flat_scr
    $sgpr44_sgpr45_sgpr46_sgpr47 = S_LOAD_DWORDX4_IMM  $sgpr4_sgpr5, 88, 0
    $sgpr58_sgpr59 = S_LOAD_DWORDX2_IMM  $sgpr4_sgpr5, 104, 0
    $sgpr62_sgpr63 = S_XOR_B64  $sgpr0_sgpr1, -1, implicit-def dead $scc
    $sgpr60_sgpr61 = S_MOV_B64 0
    S_BRANCH %bb.6

  bb.5:
    S_CBRANCH_EXECZ %bb.8, implicit $exec
    S_BRANCH %bb.3

  bb.6:
    liveins: $sgpr0_sgpr1, $sgpr60_sgpr61
    %temp9:vgpr_32 = nofpexcept V_ADD_F32_e32 0, %temp1, implicit $mode, implicit $exec
    %temp10:vgpr_32 = V_AND_B32_e32 2147483647, %temp9, implicit $exec
    %temp11:vgpr_32 = V_AND_B32_e32 65535, %temp4, implicit $exec
    undef %temp12.sub1:vreg_64 = V_MOV_B32_e32 0, implicit $exec
    FLAT_STORE_DWORD %temp7, %temp12.sub1, 0, 0, implicit $exec, implicit $flat_scr
    %temp13:vgpr_32 = V_CNDMASK_B32_e64 0, 1065353216, 0, 0, $sgpr0_sgpr1, implicit $exec
    $sgpr19 = IMPLICIT_DEF
    %temp14:vgpr_32 = nofpexcept V_MUL_F32_e64 0, 0, 0, $sgpr19, 0, 0, implicit $mode, implicit $exec
    $sgpr17 = IMPLICIT_DEF

  bb.7:
    liveins: $sgpr60_sgpr61
    $exec = S_OR_B64 $exec, killed $sgpr60_sgpr61, implicit-def $scc
    $sgpr2_sgpr3 = SI_SPILL_S64_RESTORE %stack.0, implicit $exec, implicit $sgpr32
    S_BRANCH %bb.5

  bb.8:
    S_ENDPGM 0

...