test/CodeGen/Thumb/peephole-cmp.mir

# RUN: llc -mtriple thumbv8m.base-none-eabi -run-pass=peephole-opt -verify-machineinstrs -o - %s | FileCheck %s
--- |
  target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
  target triple = "thumbv8m.base-none-none-eabi"

  define i32 @test_subrr(i32 %a, i32 %b) { ret i32 %a }
  define i32 @test_subrr_c(i32 %a, i32 %b) { ret i32 %a }
  define i32 @test_subri3(i32 %a) { ret i32 %a }
  define i32 @test_subri8(i32 %a) { ret i32 %a }
  define i32 @test_addrr(i32 %a) { ret i32 %a }
  define i32 @test_addri3(i32 %a) { ret i32 %a }
  define i32 @test_addri8(i32 %a) { ret i32 %a }

...
---
name:            test_subrr
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
  - { reg: '$r1', virtual-reg: '%2' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0, $r1

    %2:tgpr = COPY $r1
    %1:tgpr = COPY $r0
    %0:tgpr, $cpsr = tSUBrr %2, %1, 14, $noreg
    tCMPr %1, %2, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %3:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %3
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_subrr
# CHECK:      [[COPY1:%[0-9]+]]:tgpr = COPY $r1
# CHECK-NEXT: [[COPY0:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tSUBrr [[COPY1]], [[COPY0]], 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 8, $cpsr
...
---
name:            test_subrr_c
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
  - { reg: '$r1', virtual-reg: '%2' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0, $r1

    %2:tgpr = COPY $r1
    %1:tgpr = COPY $r0
    %0:tgpr, $cpsr = tSUBrr %1, %2, 14, $noreg
    tCMPr %1, %2, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %3:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %3
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_subrr_c
# CHECK:      [[COPY1:%[0-9]+]]:tgpr = COPY $r1
# CHECK-NEXT: [[COPY0:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tSUBrr [[COPY0]], [[COPY1]], 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 3, $cpsr
...
---
name:            test_subri3
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0

    %1:tgpr = COPY $r0
    %0:tgpr, $cpsr = tSUBi3 %1, 1, 14, $noreg
    tCMPi8 %1, 1, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %2:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %2
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_subri3
# CHECK:      [[COPY:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tSUBi3 [[COPY]], 1, 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 3, $cpsr
...
---
name:            test_subri8
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0

    %1:tgpr = COPY $r0
    %0:tgpr, $cpsr = tSUBi8 %1, 1, 14, $noreg
    tCMPi8 %1, 1, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %2:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %2
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_subri8
# CHECK:      [[COPY:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tSUBi8 [[COPY]], 1, 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 3, $cpsr
...
---
name:            test_addrr
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
  - { reg: '$r1', virtual-reg: '%2' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0, $r1

    %2:tgpr = COPY $r1
    %1:tgpr = COPY $r0
    %0:tgpr, $cpsr = tADDrr %2, %1, 14, $noreg
    tCMPr %0, %2, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %3:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %3
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_addrr
# CHECK:      [[COPY1:%[0-9]+]]:tgpr = COPY $r1
# CHECK-NEXT: [[COPY0:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tADDrr [[COPY1]], [[COPY0]], 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 2, $cpsr
...
---
name:            test_addri3
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0

    %0:tgpr = COPY $r0
    %1:tgpr, $cpsr = tADDi3 %0, 1, 14, $noreg
    tCMPr %1, %0, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %2:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %2
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_addri3
# CHECK:      [[COPY:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tADDi3 [[COPY]], 1, 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 2, $cpsr
...
---
name:            test_addri8
liveins:
  - { reg: '$r0', virtual-reg: '%1' }
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $r0

    %0:tgpr = COPY $r0
    %1:tgpr, $cpsr = tADDi8 %0, 10, 14, $noreg
    tCMPr %1, %0, 14, $noreg, implicit-def $cpsr
    tBcc %bb.2, 3, $cpsr
    tB %bb.1, 14, $noreg

  bb.1:
    $r0 = COPY %0
    tBX_RET 14, $noreg, implicit $r0

  bb.2:
    %2:tgpr, dead $cpsr = tMOVi8 0, 14, $noreg
    $r0 = COPY %2
    tBX_RET 14, $noreg, implicit $r0

# CHECK-LABEL: name: test_addri8
# CHECK:      [[COPY:%[0-9]+]]:tgpr = COPY $r0
# CHECK-NEXT: [[ADD:%[0-9]+]]:tgpr, $cpsr = tADDi8 [[COPY]], 10, 14, $noreg
# CHECK-NEXT: tBcc %bb.2, 2, $cpsr
...