test/CodeGen/X86/GlobalISel/select-phi.mir

# RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=ALL

--- |

  define i8 @test_i8(i32 %a, i8 %f, i8 %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi i8 [ %f, %cond.true ], [ %t, %cond.false ]
    ret i8 %cond
  }

  define i16 @test_i16(i32 %a, i16 %f, i16 %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi i16 [ %f, %cond.true ], [ %t, %cond.false ]
    ret i16 %cond
  }

  define i32 @test_i32(i32 %a, i32 %f, i32 %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi i32 [ %f, %cond.true ], [ %t, %cond.false ]
    ret i32 %cond
  }

  define i64 @test_i64(i32 %a, i64 %f, i64 %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi i64 [ %f, %cond.true ], [ %t, %cond.false ]
    ret i64 %cond
  }

  define float @test_float(i32 %a, float %f, float %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi float [ %f, %cond.true ], [ %t, %cond.false ]
    ret float %cond
  }

  define double @test_double(i32 %a, double %f, double %t) {
  entry:
    %cmp = icmp sgt i32 %a, 0
    br i1 %cmp, label %cond.true, label %cond.false

  cond.true:                                        ; preds = %entry
    br label %cond.end

  cond.false:                                       ; preds = %entry
    br label %cond.end

  cond.end:                                         ; preds = %cond.false, %cond.true
    %cond = phi double [ %f, %cond.true ], [ %t, %cond.false ]
    ret double %cond
  }

...
---
name:            test_i8
# ALL-LABEL: name:  test_i8
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: gr8, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
  - { id: 2, class: gpr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: gpr, preferred-register: '' }
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:gr8 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %al = COPY %5
# ALL-NEXT:     RET 0, implicit %al
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %edx, %esi

    %0(s32) = COPY %edi
    %1(s8) = COPY %sil
    %2(s8) = COPY %edx
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s8) = G_PHI %1(s8), %bb.2.cond.true, %2(s8), %bb.3.cond.false
    %al = COPY %5(s8)
    RET 0, implicit %al

...
---
name:            test_i16
# ALL-LABEL: name:  test_i16
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: gr16, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: gr16, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: gr16, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
  - { id: 2, class: gpr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: gpr, preferred-register: '' }
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:gr16 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %ax = COPY %5
# ALL-NEXT:     RET 0, implicit %ax
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %edx, %esi

    %0(s32) = COPY %edi
    %1(s16) = COPY %si
    %2(s16) = COPY %edx
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s16) = G_PHI %1(s16), %bb.2.cond.true, %2(s16), %bb.3.cond.false
    %ax = COPY %5(s16)
    RET 0, implicit %ax

...
---
name:            test_i32
# ALL-LABEL: name:  test_i32
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: gr32, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
  - { id: 2, class: gpr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: gpr, preferred-register: '' }
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:gr32 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %eax = COPY %5
# ALL-NEXT:     RET 0, implicit %eax
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %edx, %esi

    %0(s32) = COPY %edi
    %1(s32) = COPY %esi
    %2(s32) = COPY %edx
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s32) = G_PHI %1(s32), %bb.2.cond.true, %2(s32), %bb.3.cond.false
    %eax = COPY %5(s32)
    RET 0, implicit %eax

...
---
name:            test_i64
# ALL-LABEL: name:  test_i64
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: gr64, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: gr64, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: gr64, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: gpr, preferred-register: '' }
  - { id: 2, class: gpr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: gpr, preferred-register: '' }
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:gr64 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %rax = COPY %5
# ALL-NEXT:     RET 0, implicit %rax
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %rdx, %rsi

    %0(s32) = COPY %edi
    %1(s64) = COPY %rsi
    %2(s64) = COPY %rdx
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s64) = G_PHI %1(s64), %bb.2.cond.true, %2(s64), %bb.3.cond.false
    %rax = COPY %5(s64)
    RET 0, implicit %rax

...
---
name:            test_float
# ALL-LABEL: name:  test_float
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: fr32, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: fr32, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: fr32, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: vecr, preferred-register: '' }
  - { id: 2, class: vecr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: vecr, preferred-register: '' }
liveins:
fixedStack:
stack:
constants:
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:fr32 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %xmm0 = COPY %5
# ALL-NEXT:     RET 0, implicit %xmm0
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %xmm0, %xmm1

    %0(s32) = COPY %edi
    %1(s32) = COPY %xmm0
    %2(s32) = COPY %xmm1
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s32) = G_PHI %1(s32), %bb.2.cond.true, %2(s32), %bb.3.cond.false
    %xmm0 = COPY %5(s32)
    RET 0, implicit %xmm0

...
---
name:            test_double
# ALL-LABEL: name:  test_double
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
# ALL:      registers:
# ALL-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 1, class: fr64, preferred-register: '' }
# ALL-NEXT:   - { id: 2, class: fr64, preferred-register: '' }
# ALL-NEXT:   - { id: 3, class: gr32, preferred-register: '' }
# ALL-NEXT:   - { id: 4, class: gr8, preferred-register: '' }
# ALL-NEXT:   - { id: 5, class: fr64, preferred-register: '' }
registers:
  - { id: 0, class: gpr, preferred-register: '' }
  - { id: 1, class: vecr, preferred-register: '' }
  - { id: 2, class: vecr, preferred-register: '' }
  - { id: 3, class: gpr, preferred-register: '' }
  - { id: 4, class: gpr, preferred-register: '' }
  - { id: 5, class: vecr, preferred-register: '' }
# ALL-LABEL: bb.3.cond.end:
# ALL:          %5:fr64 = PHI %1, %bb.1.cond.true, %2, %bb.2.cond.false
# ALL-NEXT:     %xmm0 = COPY %5
# ALL-NEXT:     RET 0, implicit %xmm0
body:             |
  bb.1.entry:
    successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
    liveins: %edi, %xmm0, %xmm1

    %0(s32) = COPY %edi
    %1(s64) = COPY %xmm0
    %2(s64) = COPY %xmm1
    %3(s32) = G_CONSTANT i32 0
    %4(s1) = G_ICMP intpred(sgt), %0(s32), %3
    G_BRCOND %4(s1), %bb.2.cond.true
    G_BR %bb.3.cond.false

  bb.2.cond.true:
    successors: %bb.4.cond.end(0x80000000)

    G_BR %bb.4.cond.end

  bb.3.cond.false:
    successors: %bb.4.cond.end(0x80000000)


  bb.4.cond.end:
    %5(s64) = G_PHI %1(s64), %bb.2.cond.true, %2(s64), %bb.3.cond.false
    %xmm0 = COPY %5(s64)
    RET 0, implicit %xmm0

...