test/CodeGen/X86/GlobalISel/select-br.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 void @uncondbr() {
  entry:
    br label %bb2

  end:                                              ; preds = %bb2
    ret void

  bb2:                                              ; preds = %entry
    br label %end
  }

...
---
name:            uncondbr
# CHECK-LABEL: name:  uncondbr
alignment:       4
legalized:       true
regBankSelected: true
# CHECK:     JMP_1 %bb.2
# CHECK:     JMP_1 %bb.1
body:             |
  bb.1.entry:
    successors: %bb.3(0x80000000)

    G_BR %bb.3

  bb.2.end:
    RET 0

  bb.3.bb2:
    successors: %bb.2(0x80000000)

    G_BR %bb.2

...