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|
# RUN: llc -mtriple=aarch64--linux-gnu -mattr=+sve2 -run-pass=peephole-opt -verify-machineinstrs %s -o - | FileCheck %s
# Test instruction sequences where PTEST is redundant and thus gets removed.
---
name: whilerw_b8_s64
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; Here we check the expected sequence with subsequent tests
; just asserting there is no PTEST instruction.
;
; CHECK-LABEL: name: whilerw_b8_s64
; CHECK: %3:ppr = WHILERW_PXX_B %0, %1, implicit-def $nzcv
; CHECK-NEXT: %4:gpr32 = COPY $wzr
; CHECK-NEXT: %5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_B 31
%3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
PTEST_PP killed %2, killed %3, implicit-def $nzcv
%4:gpr32 = COPY $wzr
%5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
$w0 = COPY %5
RET_ReallyLR implicit $w0
...
---
name: whilerw_b16_s64
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: ppr }
- { id: 5, class: ppr }
- { id: 6, class: gpr32 }
- { id: 7, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; CHECK-LABEL: name: whilerw_b16_s64
; CHECK-NOT: PTEST
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_H 31
%4:ppr = WHILERW_PXX_H %0, %1, implicit-def dead $nzcv
PTEST_PP %2, %4, implicit-def $nzcv
%6:gpr32 = COPY $wzr
%7:gpr32 = CSINCWr %6, $wzr, 0, implicit $nzcv
$w0 = COPY %7
RET_ReallyLR implicit $w0
...
---
name: whilerw_b32_s64
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: ppr }
- { id: 5, class: ppr }
- { id: 6, class: gpr32 }
- { id: 7, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; CHECK-LABEL: name: whilerw_b32_s64
; CHECK-NOT: PTEST
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_S 31
%4:ppr = WHILERW_PXX_S %0, %1, implicit-def dead $nzcv
PTEST_PP %2, %4, implicit-def $nzcv
%6:gpr32 = COPY $wzr
%7:gpr32 = CSINCWr %6, $wzr, 0, implicit $nzcv
$w0 = COPY %7
RET_ReallyLR implicit $w0
...
---
name: whilerw_b64_s64
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: ppr }
- { id: 5, class: ppr }
- { id: 6, class: gpr32 }
- { id: 7, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; CHECK-LABEL: name: whilerw_b64_s64
; CHECK-NOT: PTEST
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_D 31
%4:ppr = WHILERW_PXX_D %0, %1, implicit-def dead $nzcv
PTEST_PP %2, %4, implicit-def $nzcv
%6:gpr32 = COPY $wzr
%7:gpr32 = CSINCWr %6, $wzr, 0, implicit $nzcv
$w0 = COPY %7
RET_ReallyLR implicit $w0
...
---
name: whilerw_b8_s64_keep_ptest_not_all_active
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; PTEST is not redundant when it's Pg operand is not an all active predicate
; of element size matching the WHILEGE, which is the implicitly predicate
; used by WHILE when calculating the condition codes.
;
; CHECK-LABEL: name: whilerw_b8_s64_keep_ptest_not_all_active
; CHECK: %3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
; CHECK-NEXT: PTEST_PP killed %2, killed %3, implicit-def $nzcv
; CHECK-NEXT: %4:gpr32 = COPY $wzr
; CHECK-NEXT: %5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_B 0
%3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
PTEST_PP killed %2, killed %3, implicit-def $nzcv
%4:gpr32 = COPY $wzr
%5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
$w0 = COPY %5
RET_ReallyLR implicit $w0
...
---
name: whilerw_b8_s64_keep_ptest_of_halfs
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; PTEST is not redundant when it's Pg operand is not an all active predicate
; of element size matching the WHILEGE, which is the implicitly predicate
; used by WHILE when calculating the condition codes.
;
; CHECK-LABEL: name: whilerw_b8_s64_keep_ptest_of_halfs
; CHECK: %3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
; CHECK-NEXT: PTEST_PP killed %2, killed %3, implicit-def $nzcv
; CHECK-NEXT: %4:gpr32 = COPY $wzr
; CHECK-NEXT: %5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_H 31
%3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
PTEST_PP killed %2, killed %3, implicit-def $nzcv
%4:gpr32 = COPY $wzr
%5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
$w0 = COPY %5
RET_ReallyLR implicit $w0
...
---
name: whilerw_b8_s64_keep_ptest_of_words
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; PTEST is not redundant when it's Pg operand is not an all active predicate
; of element size matching the WHILEGE, which is the implicitly predicate
; used by WHILE when calculating the condition codes.
;
; CHECK-LABEL: name: whilerw_b8_s64_keep_ptest_of_words
; CHECK: %3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
; CHECK-NEXT: PTEST_PP killed %2, killed %3, implicit-def $nzcv
; CHECK-NEXT: %4:gpr32 = COPY $wzr
; CHECK-NEXT: %5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_S 31
%3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
PTEST_PP killed %2, killed %3, implicit-def $nzcv
%4:gpr32 = COPY $wzr
%5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
$w0 = COPY %5
RET_ReallyLR implicit $w0
...
---
name: whilerw_b8_s64_keep_ptest_of_doublewords
alignment: 2
tracksRegLiveness: true
registers:
- { id: 0, class: gpr64 }
- { id: 1, class: gpr64 }
- { id: 2, class: ppr }
- { id: 3, class: ppr }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
liveins:
- { reg: '$x0', virtual-reg: '%0' }
- { reg: '$x1', virtual-reg: '%1' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0.entry:
liveins: $x0, $x1
; PTEST is not redundant when it's Pg operand is not an all active predicate
; of element size matching the WHILEGE, which is the implicitly predicate
; used by WHILE when calculating the condition codes.
;
; CHECK-LABEL: name: whilerw_b8_s64_keep_ptest_of_doublewords
; CHECK: %3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
; CHECK-NEXT: PTEST_PP killed %2, killed %3, implicit-def $nzcv
; CHECK-NEXT: %4:gpr32 = COPY $wzr
; CHECK-NEXT: %5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
%1:gpr64 = COPY $x1
%0:gpr64 = COPY $x0
%2:ppr = PTRUE_D 31
%3:ppr = WHILERW_PXX_B %0, %1, implicit-def dead $nzcv
PTEST_PP killed %2, killed %3, implicit-def $nzcv
%4:gpr32 = COPY $wzr
%5:gpr32 = CSINCWr %4, $wzr, 0, implicit $nzcv
$w0 = COPY %5
RET_ReallyLR implicit $w0
...
|
