llvm-project/llvm/test/CodeGen/ARM/tail-dup-bundle.mir

# RUN: llc -o - %s -run-pass=block-placement -mtriple=thumbv7k-apple-ios8.0.0 -verify-machineinstrs -O3 | FileCheck %s
---
# CHECK-LABEL: name: func
# Make sure the bundle gets duplicated correctly
# CHECK: BUNDLE implicit-def dead %itstate, implicit-def %cpsr, implicit killed %r0, implicit killed %cpsr {
# CHECK:   t2IT 1, 24, implicit-def %itstate
# CHECK:   t2CMPri killed %r0, 9, 1, killed %cpsr, implicit-def %cpsr, implicit internal killed %itstate
# CHECK: }
# CHECK: BUNDLE implicit-def dead %itstate, implicit-def %cpsr, implicit killed %r0, implicit killed %cpsr {
# CHECK:   t2IT 1, 24, implicit-def %itstate
# CHECK:   t2CMPri killed %r0, 9, 1, killed %cpsr, implicit-def %cpsr, implicit internal killed %itstate
# CHECK: }
name: func
tracksRegLiveness: true
body: |
  bb.0:
    liveins: %r0, %lr, %r7

  bb.1:
    liveins: %r0

    t2CMPri %r0, 32, 14, %noreg, implicit-def %cpsr
    BUNDLE implicit-def dead %itstate, implicit-def %cpsr, implicit killed %r0, implicit killed %cpsr {
      t2IT 1, 24, implicit-def %itstate
      t2CMPri killed %r0, 9, 1, killed %cpsr, implicit-def %cpsr, implicit internal killed %itstate
    }
    t2Bcc %bb.3, 1, killed %cpsr

  bb.2:
    %r0 = IMPLICIT_DEF
    t2B %bb.1, 14, %noreg

  bb.3:
    %r0 = IMPLICIT_DEF
    t2B %bb.1, 14, %noreg
...