llvm/test/CodeGen/AMDGPU/sdwa-ops.mir

# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass=si-peephole-sdwa -o - %s | FileCheck -check-prefix=GFX9 %s
# RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs -run-pass=si-peephole-sdwa -o - %s | FileCheck -check-prefix=GFX9 %s

# test for 3 consecutive _sdwa's
# GFX9-LABEL: name:            test1_add_co_sdwa
# GFX9: = nsw V_ADD_I32_sdwa
# GFX9-NEXT: = nuw V_ADDC_U32_e32
# GFX9: V_ADD_I32_sdwa
# GFX9-NEXT: V_ADDC_U32_e32
# GFX9: V_ADD_I32_sdwa
# GFX9-NEXT: V_ADDC_U32_e32
---
name:            test1_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = nsw V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %64:vgpr_32, dead %66:sreg_64_xexec = nuw V_ADDC_U32_e64 %30.sub1, %0, killed %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

    %161:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %163:vgpr_32, %165:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %161, 0, implicit $exec
    %164:vgpr_32, dead %166:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %165, 0, implicit $exec
    %162:vreg_64 = REG_SEQUENCE %163, %subreg.sub0, %164, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %162, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

    %171:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %173:vgpr_32, %175:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %171, 0, implicit $exec
    %174:vgpr_32, dead %176:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %175, 0, implicit $exec
    %172:vreg_64 = REG_SEQUENCE %173, %subreg.sub0, %174, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %172, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for VCC interference on sdwa, should generate 1 xform only
# GFX9-LABEL: name:            test2_add_co_sdwa
# GFX9: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e32
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9-NOT: V_ADDC_U32_e32
---
name:            test2_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec

    %161:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %163:vgpr_32, %165:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %161, 0, implicit $exec
    %164:vgpr_32, dead %166:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %165, 0, implicit $exec
    %162:vreg_64 = REG_SEQUENCE %163, %subreg.sub0, %164, %subreg.sub1

    %64:vgpr_32, dead %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

    %161:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %163:vgpr_32, %165:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %161, 0, implicit $exec
    %164:vgpr_32, dead %166:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %165, 0, implicit $exec
    %162:vreg_64 = REG_SEQUENCE %163, %subreg.sub0, %164, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %162, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for CarryOut used, should reject
# GFX9-LABEL: name:            test3_add_co_sdwa
# GFX9: V_ADD_I32_e64
# GFX9: V_ADDC_U32_e64
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9-NOT: V_ADDC_U32_e32
---
name:            test3_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, killed %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %66, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for CarryIn used more than once, should reject
# GFX9-LABEL: name:            test4_add_co_sdwa
# GFX9: V_ADD_I32_e64
# GFX9: V_ADDC_U32_e64
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9-NOT: V_ADDC_U32_e32
---
name:            test4_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %65, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)


...

# test for simple example, should generate sdwa
# GFX9-LABEL: name:            test5_add_co_sdwa
# GFX9: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e32
---
name:            test5_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)


...

# test for V_ADD_I32_e64 only, should reject
# GFX9-LABEL: name:            test6_add_co_sdwa
# GFX9: V_ADD_I32_e64
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9-NOT: V_ADDC_U32_e32
---
name:            test6_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %23, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)


...

# test for V_ADDC_U32_e64 only, should reject
# GFX9-LABEL: name:            test7_add_co_sdwa
# GFX9: V_ADDC_U32_e64
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9-NOT: V_ADDC_U32_e32
---
name:            test7_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %24:sreg_64_xexec = COPY $sgpr0_sgpr1

    %30:vreg_64 = COPY $sgpr0_sgpr1
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %24, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %23, %subreg.sub0, %23, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %30, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)


...

# test for $vcc defined between two adds, should not generate
# GFX9-LABEL: name:            test8_add_co_sdwa
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e64
---
name:            test8_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    $vcc = COPY %30
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %31:vreg_64 = COPY $vcc
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %31, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)


...

# test for non dead $vcc, should not generate
# GFX9-LABEL: name:            test9_add_co_sdwa
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e64
---
name:            test9_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %30:vreg_64 = COPY $sgpr0_sgpr1
    $vcc = COPY %30
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %31:vreg_64 = COPY $vcc
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %31, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for def $vcc_lo, should not generate
# GFX9-LABEL: name:            test10_add_co_sdwa
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e64
---
name:            test10_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %30:vreg_64 = COPY $sgpr0_sgpr1
    $vcc_lo = COPY %30.sub0
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %31:vgpr_32 = COPY $vcc_lo
    %32:vreg_64 = REG_SEQUENCE %31, %subreg.sub0, %23, %subreg.sub1
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %32, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for read $vcc_hi, should not generate
# GFX9-LABEL: name:            test11_add_co_sdwa
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e64
---
name:            test11_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %30:vreg_64 = COPY $sgpr0_sgpr1
    $vcc_hi = COPY %30.sub0
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    %31:vgpr_32 = COPY $vcc_hi
    %32:vreg_64 = REG_SEQUENCE %31, %subreg.sub0, %23, %subreg.sub1
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %32, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)

...

# test for $vcc defined and used between adds, should not generate
# GFX9-LABEL: name:            test12_add_co_sdwa
# GFX9-NOT: V_ADD_I32_sdwa
# GFX9: V_ADDC_U32_e64
---
name:            test12_add_co_sdwa
tracksRegLiveness: true
registers:
  - { id: 0, class: vgpr_32, preferred-register: '' }
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
body:             |
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %1:sgpr_64 = COPY $sgpr0_sgpr1
    %0:vgpr_32 = COPY $vgpr0
    %22:sreg_32_xm0 = S_MOV_B32 255
    %30:vreg_64 = COPY $sgpr0_sgpr1
    %23:vgpr_32 = V_AND_B32_e32 %22, %0, implicit $exec
    %63:vgpr_32, %65:sreg_64_xexec = V_ADD_I32_e64 %30.sub0, %23, 0, implicit $exec
    $vcc = COPY %30
    %31:vreg_64 = COPY killed $vcc
    %64:vgpr_32, %66:sreg_64_xexec = V_ADDC_U32_e64 %30.sub1, %0, %65, 0, implicit $exec
    %62:vreg_64 = REG_SEQUENCE %63, %subreg.sub0, %64, %subreg.sub1
    GLOBAL_STORE_DWORDX2_SADDR %31, %62, %1, 0, 0, 0, 0, implicit $exec, implicit $exec :: (store 8)