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llvm-project/llvm/test/CodeGen/AMDGPU/fold-readlane.mir

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# RUN: llc -march=amdgcn -run-pass si-fold-operands -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s
# GCN-LABEL: name: fold-imm-readfirstlane{{$}}
# GCN: %1:sreg_32_xm0 = S_MOV_B32 123
---
name: fold-imm-readfirstlane
tracksRegLiveness: true
body: |
bb.0:
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# GCN-LABEL: name: fold-imm-readfirstlane-readfirstlane{{$}}
# GCN: %0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
# GCN: %1:sreg_32_xm0 = S_MOV_B32 123
# GCN: %2:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
# GCN: %3:sreg_32_xm0 = COPY %1
---
name: fold-imm-readfirstlane-readfirstlane
tracksRegLiveness: true
body: |
bb.0:
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
%2:vgpr_32 = COPY %1
%3:sreg_32_xm0 = V_READFIRSTLANE_B32 %2, implicit $exec
...
# GCN-LABEL: name: fold-copy-readfirstlane{{$}}
# GCN: %0:sreg_32_xm0 = COPY $sgpr10
# GCN: %1:vgpr_32 = COPY %0
# GCN: %2:sreg_32_xm0 = COPY %0
---
name: fold-copy-readfirstlane
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10
%0:sreg_32_xm0 = COPY $sgpr10
%1:vgpr_32 = COPY %0
%2:sreg_32_xm0 = V_READFIRSTLANE_B32 %1, implicit $exec
...
# GCN-LABEL: name: no-fold-copy-readfirstlane-physreg0{{$}}
# GCN: %0:vgpr_32 = COPY $sgpr10
# GCN-NEXT: %1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
---
name: no-fold-copy-readfirstlane-physreg0
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10
%0:vgpr_32 = COPY $sgpr10
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# GCN-LABEL: name: no-fold-copy-readfirstlane-physreg1{{$}}
# GCN: $vgpr0 = COPY $sgpr10
# GCN-NEXT: %0:sreg_32_xm0 = V_READFIRSTLANE_B32 $vgpr0, implicit $exec
---
name: no-fold-copy-readfirstlane-physreg1
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10
$vgpr0 = COPY $sgpr10
%0:sreg_32_xm0 = V_READFIRSTLANE_B32 $vgpr0, implicit $exec
...
# GCN-LABEL: name: no-fold-imm-readfirstlane-physreg{{$}}
# GCN: $vgpr0 = V_MOV_B32_e32 123, implicit $exec
# GCN-NEXT: V_READFIRSTLANE_B32 $vgpr0, implicit $exec
---
name: no-fold-imm-readfirstlane-physreg
tracksRegLiveness: true
body: |
bb.0:
$vgpr0 = V_MOV_B32_e32 123, implicit $exec
%0:sreg_32_xm0 = V_READFIRSTLANE_B32 $vgpr0, implicit $exec
...
# TODO: This could be folded, if the search for exec modifications was
# smarter.
# GCN-LABEL: name: fold-imm-readfirstlane-cross-block{{$}}
# GCN: V_MOV_B32
# GCN: V_READFIRSTLANE_B32
---
name: fold-imm-readfirstlane-cross-block
tracksRegLiveness: true
body: |
bb.0:
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
bb.1:
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# TODO: This could be folded, if the search for exec modifications was
# smarter.
# GCN-LABEL: name: fold-copy-readfirstlane-cross-block{{$}}
# GCN: V_MOV_B32
# GCN: V_READFIRSTLANE_B32
---
name: fold-copy-readfirstlane-cross-block
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr12
%0:sreg_32_xm0 = COPY $sgpr12
%1:vgpr_32 = V_MOV_B32_e32 %0, implicit $exec
bb.1:
%2:sreg_32_xm0 = V_READFIRSTLANE_B32 %1, implicit $exec
...
# GCN-LABEL: name: fold-copy-readfirstlane-cross-block-exec-def{{$}}
# GCN: V_MOV_B32
# GCN: $exec = S_MOV_B64_term
# GCN: V_READFIRSTLANE_B32
---
name: fold-copy-readfirstlane-cross-block-exec-def
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10_sgpr11, $sgpr12
%0:sreg_32_xm0 = COPY $sgpr12
%1:vgpr_32 = V_MOV_B32_e32 %0, implicit $exec
$exec = S_MOV_B64_term $sgpr10_sgpr11
bb.1:
%2:sreg_32_xm0 = V_READFIRSTLANE_B32 %1, implicit $exec
...
# GCN-LABEL: name: fold-copy-readfirstlane-same-block-exec-def{{$}}
# GCN: COPY
# GCN-NEXT: %1:vgpr_32 = COPY %0
# GCN-NEXT: $exec = S_MOV_B64
# GCN-NEXT: V_READFIRSTLANE_B32
---
name: fold-copy-readfirstlane-same-block-exec-def
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10_sgpr11, $sgpr12
%0:sreg_32_xm0 = COPY $sgpr12
%1:vgpr_32 = COPY %0, implicit $exec
$exec = S_MOV_B64 $sgpr10_sgpr11
%2:sreg_32_xm0 = V_READFIRSTLANE_B32 %1, implicit $exec
...
# GCN-LABEL: name: fold-imm-readfirstlane-cross-block-exec-def{{$}}
# GCN: V_MOV_B32
# GCN: $exec = S_MOV_B64
# GCN: V_READFIRSTLANE_B32
---
name: fold-imm-readfirstlane-cross-block-exec-def
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10_sgpr11, $sgpr12_sgpr13
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
$exec = S_MOV_B64_term $sgpr10_sgpr11
bb.1:
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# GCN-LABEL: name: fold-imm-readfirstlane-same-block-exec-def{{$}}
# GCN: V_MOV_B32
# GCN-NEXT: $exec = S_MOV_B64
# GCN-NEXT: V_READFIRSTLANE_B32
---
name: fold-imm-readfirstlane-same-block-exec-def
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10_sgpr11
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
$exec = S_MOV_B64 $sgpr10_sgpr11
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# GCN-LABEL: name: fold-sgpr-copy-readfirstlane-same-block-exec-def{{$}}
# GCN: COPY
# GCN-NEXT: $exec = S_MOV_B64
# GCN-NEXT: V_READFIRSTLANE_B32
---
name: fold-sgpr-copy-readfirstlane-same-block-exec-def
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10_sgpr11, $sgpr12
%0:vgpr_32 = COPY $sgpr12
$exec = S_MOV_B64 $sgpr10_sgpr11
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
...
# GCN-LABEL: name: fold-imm-readfirstlane-user{{$}}
# GCN: %3:sreg_32_xm0 = S_MOV_B32 123
---
name: fold-imm-readfirstlane-user
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0, $sgpr0_sgpr1
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
%1:sreg_32_xm0 = V_READFIRSTLANE_B32 %0, implicit $exec
%2:sreg_32_xm0 = COPY %1
%3:sreg_32_xm0 = COPY %2
S_ENDPGM 0, implicit %3
...
# GCN-LABEL: name: fold-imm-readlane{{$}}
# GCN: %1:sreg_32_xm0 = S_MOV_B32 123
---
name: fold-imm-readlane
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0, $sgpr0_sgpr1
%0:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
%1:sreg_32_xm0 = V_READLANE_B32 %0, 0, implicit $exec
...
# GCN-LABEL: name: fold-imm-readlane-src1{{$}}
# GCN: %0:vgpr_32 = COPY $vgpr0
# GCN: V_READLANE_B32 %0, 12, implicit $exec
---
name: fold-imm-readlane-src1
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0
%0:vgpr_32 = COPY $vgpr0
%1:sreg_32_xm0 = S_MOV_B32 12
%2:sreg_32_xm0 = V_READLANE_B32 %0, %1, implicit $exec
...
# Constant for subreg0
# GCN-LABEL: name: fold-imm-readfirstlane-regsequence0{{$}}
# GCN: %0:vgpr_32 = COPY $vgpr0
# GCN-NEXT: %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
# GCN-NEXT: %2:vreg_64 = REG_SEQUENCE %0, %subreg.sub0, killed %1, %subreg.sub1
# GCN-NEXT: %3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0, implicit $exec
# GCN-NEXT: %4:sgpr_32 = S_MOV_B32 0
---
name: fold-imm-readfirstlane-regsequence0
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0
%0:vgpr_32 = COPY $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:vreg_64 = REG_SEQUENCE %0:vgpr_32, %subreg.sub0, killed %1:vgpr_32, %subreg.sub1
%3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0:vreg_64, implicit $exec
%4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1:vreg_64, implicit $exec
...
# Constant for subreg1
# GCN-LABEL: name: fold-imm-readfirstlane-regsequence1{{$}}
# GCN: %0:vgpr_32 = COPY $vgpr0
# GCN-NEXT: %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
# GCN-NEXT: %2:vreg_64 = REG_SEQUENCE %1, %subreg.sub0, killed %0, %subreg.sub1
# GCN-NEXT: %3:sgpr_32 = S_MOV_B32 0
# GCN-NEXT: %4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1, implicit $exec
---
name: fold-imm-readfirstlane-regsequence1
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr0
%0:vgpr_32 = COPY $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:vreg_64 = REG_SEQUENCE %1:vgpr_32, %subreg.sub0, killed %0:vgpr_32, %subreg.sub1
%3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0:vreg_64, implicit $exec
%4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1:vreg_64, implicit $exec
...
# Different constant regs for each subreg
# GCN-LABEL: name: fold-imm-readfirstlane-regsequence2{{$}}
# GCN: %0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
# GCN-NEXT: %1:vgpr_32 = V_MOV_B32_e32 1, implicit $exec
# GCN-NEXT: %2:vreg_64 = REG_SEQUENCE %0, %subreg.sub0, killed %1, %subreg.sub1
# GCN-NEXT: %3:sgpr_32 = S_MOV_B32 0
# GCN-NEXT: %4:sgpr_32 = S_MOV_B32 1
---
name: fold-imm-readfirstlane-regsequence2
tracksRegLiveness: true
body: |
bb.0:
%0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 1, implicit $exec
%2:vreg_64 = REG_SEQUENCE %0:vgpr_32, %subreg.sub0, killed %1:vgpr_32, %subreg.sub1
%3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0:vreg_64, implicit $exec
%4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1:vreg_64, implicit $exec
...
# Same constant reg for each subreg, so there are multiple constant uses
# GCN-LABEL: name: fold-imm-readfirstlane-regsequence3{{$}}
# GCN: %0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
# GCN-NEXT: %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
# GCN-NEXT: %2:vreg_64 = REG_SEQUENCE %0, %subreg.sub0, killed %1, %subreg.sub1
# GCN-NEXT: %3:sgpr_32 = S_MOV_B32 0
# GCN-NEXT: %4:sgpr_32 = S_MOV_B32 0
---
name: fold-imm-readfirstlane-regsequence3
tracksRegLiveness: true
body: |
bb.0:
%0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:vreg_64 = REG_SEQUENCE %0:vgpr_32, %subreg.sub0, killed %1:vgpr_32, %subreg.sub1
%3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0:vreg_64, implicit $exec
%4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1:vreg_64, implicit $exec
...
# FIXME: This should fold
# GCN-LABEL: name: fold-copy-readfirstlane-regsequence0{{$}}
# GCN: %0:vgpr_32 = COPY $sgpr10
# GCN-NEXT: %1:vgpr_32 = COPY $sgpr11
# GCN-NEXT: %2:vreg_64 = REG_SEQUENCE %0, %subreg.sub0, killed %1, %subreg.sub1
# GCN-NEXT: %3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0, implicit $exec
# GCN-NEXT: %4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1, implicit $exec
---
name: fold-copy-readfirstlane-regsequence0
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10, $sgpr11
%0:vgpr_32 = COPY $sgpr10
%1:vgpr_32 = COPY $sgpr11
%2:vreg_64 = REG_SEQUENCE %0:vgpr_32, %subreg.sub0, killed %1:vgpr_32, %subreg.sub1
%3:sgpr_32 = V_READFIRSTLANE_B32 %2.sub0:vreg_64, implicit $exec
%4:sgpr_32 = V_READFIRSTLANE_B32 %2.sub1:vreg_64, implicit $exec
...
# GCN-LABEL: name: fold-copy-readfirstlane-regsequence1{{$}}
# GCN: %0:sreg_32_xm0 = COPY $sgpr10
# GCN-NEXT: %1:sreg_32_xm0 = COPY $sgpr11
# GCN-NEXT: %2:vgpr_32 = COPY %0
# GCN-NEXT: %3:vgpr_32 = COPY %1
# GCN-NEXT: %4:vreg_64 = REG_SEQUENCE %2, %subreg.sub0, killed %3, %subreg.sub1
# GCN-NEXT: %5:sgpr_32 = V_READFIRSTLANE_B32 %4.sub0, implicit $exec
# GCN-NEXT: %6:sgpr_32 = V_READFIRSTLANE_B32 %4.sub1, implicit $exec
---
name: fold-copy-readfirstlane-regsequence1
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr10, $sgpr11
%0:sreg_32_xm0 = COPY $sgpr10
%1:sreg_32_xm0 = COPY $sgpr11
%2:vgpr_32 = COPY %0
%3:vgpr_32 = COPY %1
%4:vreg_64 = REG_SEQUENCE %2:vgpr_32, %subreg.sub0, killed %3:vgpr_32, %subreg.sub1
%5:sgpr_32 = V_READFIRSTLANE_B32 %4.sub0:vreg_64, implicit $exec
%6:sgpr_32 = V_READFIRSTLANE_B32 %4.sub1:vreg_64, implicit $exec
...
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