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

# RUN: llc -mtriple=x86_64-linux-gnu    -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X64
# RUN: llc -mtriple=i386-linux-gnu      -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X32

--- |

  define i32 @test(i32 %a) {
  entry:
    %cmp = trunc i32 %a to i1
    br i1 %cmp, label %true, label %false

  true:                                             ; preds = %entry
    ret i32 0

  false:                                            ; preds = %entry
    ret i32 1
  }

...
---
name:            test
# CHECK-LABEL: name:  test
alignment:       4
legalized:       true
regBankSelected: 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: '' }
# X64:           %0:gr32 = COPY $edi
# X32:           %0:gr32_abcd = COPY $edi
# CHECK-NEXT:    %2:gr32 = MOV32r0 implicit-def $eflags
# CHECK-NEXT:    %3:gr32 = MOV32ri 1
# CHECK-NEXT:    %1:gr8 = COPY %0.sub_8bit
# CHECK-NEXT:    TEST8ri %1, 1, implicit-def $eflags
# CHECK-NEXT:    JNE_1 %[[TRUE:bb.[0-9]+]], implicit $eflags
# CHECK-NEXT:    JMP_1 %[[FALSE:bb.[0-9]+]]
# CHECK:      [[TRUE]].{{[a-zA-Z0-9]+}}:
# CHECK-NEXT:    $eax = COPY %2
# CHECK-NEXT:    RET 0, implicit $eax
# CHECK:      [[FALSE]].{{[a-zA-Z0-9]+}}:
# CHECK-NEXT:    $eax = COPY %3
# CHECK-NEXT:    RET 0, implicit $eax


body:             |
  bb.1.entry:
    successors: %bb.2(0x40000000), %bb.3(0x40000000)
    liveins: $edi

    %0(s32) = COPY $edi
    %2(s32) = G_CONSTANT i32 0
    %3(s32) = G_CONSTANT i32 1
    %1(s1) = G_TRUNC %0(s32)
    G_BRCOND %1(s1), %bb.2
    G_BR %bb.3

  bb.2.true:
    $eax = COPY %2(s32)
    RET 0, implicit $eax

  bb.3.false:
    $eax = COPY %3(s32)
    RET 0, implicit $eax

...