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

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# 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
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
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: '' }
  - { id: 6, class: gpr, preferred-register: '' }
  - { id: 7, class: gpr, preferred-register: '' }
body:             |
  ; ALL-LABEL: name: test_i8
  ; ALL: bb.0.entry:
  ; ALL:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; ALL:   liveins: $edi, $edx, $esi
  ; ALL:   [[COPY:%[0-9]+]]:gr32 = COPY $edi
  ; ALL:   [[COPY1:%[0-9]+]]:gr32 = COPY $esi
  ; ALL:   [[COPY2:%[0-9]+]]:gr8 = COPY [[COPY1]].sub_8bit
  ; ALL:   [[COPY3:%[0-9]+]]:gr32 = COPY $edx
  ; ALL:   [[COPY4:%[0-9]+]]:gr8 = COPY [[COPY3]].sub_8bit
  ; ALL:   [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
  ; ALL:   CMP32rr [[COPY]], [[MOV32r0_]], implicit-def $eflags
  ; ALL:   [[SETGr:%[0-9]+]]:gr8 = SETGr implicit $eflags
  ; ALL:   TEST8ri [[SETGr]], 1, implicit-def $eflags
  ; ALL:   JNE_1 %bb.2, implicit $eflags
  ; ALL: bb.1.cond.false:
  ; ALL:   successors: %bb.2(0x80000000)
  ; ALL: bb.2.cond.end:
  ; ALL:   [[PHI:%[0-9]+]]:gr8 = PHI [[COPY4]], %bb.1, [[COPY2]], %bb.0
  ; ALL:   $al = COPY [[PHI]]
  ; ALL:   RET 0, implicit $al
  bb.1.entry:
    successors: %bb.3(0x40000000), %bb.2(0x40000000)
    liveins: $edi, $edx, $esi

    %0:gpr(s32) = COPY $edi
    %3:gpr(s32) = COPY $esi
    %1:gpr(s8) = G_TRUNC %3(s32)
    %4:gpr(s32) = COPY $edx
    %2:gpr(s8) = G_TRUNC %4(s32)
    %5:gpr(s32) = G_CONSTANT i32 0
    %6:gpr(s1) = G_ICMP intpred(sgt), %0(s32), %5
    G_BRCOND %6(s1), %bb.3

  bb.2.cond.false:
    successors: %bb.3(0x80000000)


  bb.3.cond.end:
    %7:gpr(s8) = G_PHI %2(s8), %bb.2, %1(s8), %bb.1
    $al = COPY %7(s8)
    RET 0, implicit $al

...
---
name:            test_i16
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
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: '' }
  - { id: 6, class: gpr, preferred-register: '' }
  - { id: 7, class: gpr, preferred-register: '' }
body:             |
  ; ALL-LABEL: name: test_i16
  ; ALL: bb.0.entry:
  ; ALL:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; ALL:   liveins: $edi, $edx, $esi
  ; ALL:   [[COPY:%[0-9]+]]:gr32 = COPY $edi
  ; ALL:   [[COPY1:%[0-9]+]]:gr32 = COPY $esi
  ; ALL:   [[COPY2:%[0-9]+]]:gr16 = COPY [[COPY1]].sub_16bit
  ; ALL:   [[COPY3:%[0-9]+]]:gr32 = COPY $edx
  ; ALL:   [[COPY4:%[0-9]+]]:gr16 = COPY [[COPY3]].sub_16bit
  ; ALL:   [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
  ; ALL:   CMP32rr [[COPY]], [[MOV32r0_]], implicit-def $eflags
  ; ALL:   [[SETGr:%[0-9]+]]:gr8 = SETGr implicit $eflags
  ; ALL:   TEST8ri [[SETGr]], 1, implicit-def $eflags
  ; ALL:   JNE_1 %bb.2, implicit $eflags
  ; ALL: bb.1.cond.false:
  ; ALL:   successors: %bb.2(0x80000000)
  ; ALL: bb.2.cond.end:
  ; ALL:   [[PHI:%[0-9]+]]:gr16 = PHI [[COPY4]], %bb.1, [[COPY2]], %bb.0
  ; ALL:   $ax = COPY [[PHI]]
  ; ALL:   RET 0, implicit $ax
  bb.1.entry:
    successors: %bb.3(0x40000000), %bb.2(0x40000000)
    liveins: $edi, $edx, $esi

    %0:gpr(s32) = COPY $edi
    %3:gpr(s32) = COPY $esi
    %1:gpr(s16) = G_TRUNC %3(s32)
    %4:gpr(s32) = COPY $edx
    %2:gpr(s16) = G_TRUNC %4(s32)
    %5:gpr(s32) = G_CONSTANT i32 0
    %6:gpr(s1) = G_ICMP intpred(sgt), %0(s32), %5
    G_BRCOND %6(s1), %bb.3

  bb.2.cond.false:
    successors: %bb.3(0x80000000)


  bb.3.cond.end:
    %7:gpr(s16) = G_PHI %2(s16), %bb.2, %1(s16), %bb.1
    $ax = COPY %7(s16)
    RET 0, implicit $ax

...
---
name:            test_i32
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
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: '' }
body:             |
  ; ALL-LABEL: name: test_i32
  ; ALL: bb.0.entry:
  ; ALL:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; ALL:   liveins: $edi, $edx, $esi
  ; ALL:   [[COPY:%[0-9]+]]:gr32 = COPY $edi
  ; ALL:   [[COPY1:%[0-9]+]]:gr32 = COPY $esi
  ; ALL:   [[COPY2:%[0-9]+]]:gr32 = COPY $edx
  ; ALL:   [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
  ; ALL:   CMP32rr [[COPY]], [[MOV32r0_]], implicit-def $eflags
  ; ALL:   [[SETGr:%[0-9]+]]:gr8 = SETGr implicit $eflags
  ; ALL:   TEST8ri [[SETGr]], 1, implicit-def $eflags
  ; ALL:   JNE_1 %bb.1, implicit $eflags
  ; ALL:   JMP_1 %bb.2
  ; ALL: bb.1.cond.true:
  ; ALL:   successors: %bb.3(0x80000000)
  ; ALL:   JMP_1 %bb.3
  ; ALL: bb.2.cond.false:
  ; ALL:   successors: %bb.3(0x80000000)
  ; ALL: bb.3.cond.end:
  ; ALL:   [[PHI:%[0-9]+]]:gr32 = PHI [[COPY1]], %bb.1, [[COPY2]], %bb.2
  ; ALL:   $eax = COPY [[PHI]]
  ; ALL:   RET 0, implicit $eax
  bb.1.entry:
    successors: %bb.2(0x40000000), %bb.3(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
    G_BR %bb.3

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

    G_BR %bb.4

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


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

...
---
name:            test_i64
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
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: '' }
body:             |
  ; ALL-LABEL: name: test_i64
  ; ALL: bb.0.entry:
  ; ALL:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; ALL:   liveins: $edi, $rdx, $rsi
  ; ALL:   [[COPY:%[0-9]+]]:gr32 = COPY $edi
  ; ALL:   [[COPY1:%[0-9]+]]:gr64 = COPY $rsi
  ; ALL:   [[COPY2:%[0-9]+]]:gr64 = COPY $rdx
  ; ALL:   [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
  ; ALL:   CMP32rr [[COPY]], [[MOV32r0_]], implicit-def $eflags
  ; ALL:   [[SETGr:%[0-9]+]]:gr8 = SETGr implicit $eflags
  ; ALL:   TEST8ri [[SETGr]], 1, implicit-def $eflags
  ; ALL:   JNE_1 %bb.1, implicit $eflags
  ; ALL:   JMP_1 %bb.2
  ; ALL: bb.1.cond.true:
  ; ALL:   successors: %bb.3(0x80000000)
  ; ALL:   JMP_1 %bb.3
  ; ALL: bb.2.cond.false:
  ; ALL:   successors: %bb.3(0x80000000)
  ; ALL: bb.3.cond.end:
  ; ALL:   [[PHI:%[0-9]+]]:gr64 = PHI [[COPY1]], %bb.1, [[COPY2]], %bb.2
  ; ALL:   $rax = COPY [[PHI]]
  ; ALL:   RET 0, implicit $rax
  bb.1.entry:
    successors: %bb.2(0x40000000), %bb.3(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
    G_BR %bb.3

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

    G_BR %bb.4

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


  bb.4.cond.end:
    %5(s64) = G_PHI %1(s64), %bb.2, %2(s64), %bb.3
    $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, %2, %bb.2
# ALL-NEXT:     $xmm0 = COPY %5
# ALL-NEXT:     RET 0, implicit $xmm0
body:             |
  bb.1.entry:
    successors: %bb.2(0x40000000), %bb.3(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
    G_BR %bb.3

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

    G_BR %bb.4

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


  bb.4.cond.end:
    %5(s32) = G_PHI %1(s32), %bb.2, %2(s32), %bb.3
    $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, %2, %bb.2
# ALL-NEXT:     $xmm0 = COPY %5
# ALL-NEXT:     RET 0, implicit $xmm0
body:             |
  bb.1.entry:
    successors: %bb.2(0x40000000), %bb.3(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
    G_BR %bb.3

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

    G_BR %bb.4

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


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

...