third_party/llvm-7.0/llvm/test/CodeGen/SystemZ/branch-folder-hoist-livein.mir

# RUN: llc -verify-machineinstrs -O1 -mtriple=s390x-ibm-linux -o - %s -run-pass=branch-folder | FileCheck %s
--- |
  target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64"
  target triple = "s390x-ibm-linux"

  @b = external global i16, align 1
  @d = external global i16, align 1

  define void @f1() {
    ret void
  }

...
---
name:            f1
tracksRegLiveness: true
body:             |
  bb.0:
    successors: %bb.2(0x7fffffff), %bb.1(0x00000001)
    liveins:

    renamable $r1d = LGRL @b :: (load 4 from got, align 8)
    renamable $r1l = LH killed renamable $r1d, 0, $noreg, implicit-def $r1d :: (dereferenceable load 1 from @b)
    renamable $r2l = LHI 0
    renamable $r3d = LGRL @d :: (load 4 from got, align 8)
    renamable $r4d = LLILL 0, implicit-def $r4q

    CHI killed renamable $r2l, 0, implicit-def $cc
    BRC 14, 6, %bb.2, implicit killed $cc
    J %bb.1

  bb.1:
    successors:
    liveins: $r1l, $r3d, $r4q

    renamable $r4d = COPY killed renamable $r4d, implicit killed $r4q
    STH renamable $r1l, killed renamable $r3d, 0, $noreg, implicit killed $r4d :: (store 1 into @d)

  bb.2:
    liveins: $r1l, $r3d, $r4q

    renamable $r4d = COPY killed renamable $r4d, implicit killed $r4q
    STH renamable $r1l, killed renamable $r3d, 0, $noreg, implicit killed $r4d :: (store 1 into @d)
    Return

...

# CHECK: renamable $r4d = COPY killed renamable $r4d, implicit killed $r4q
# CHECK-NEXT: CHI killed renamable $r2l, 0, implicit-def $cc
# CHECK-NEXT: BRC 14, 6, %bb.2, implicit killed $cc
# CHECK-NEXT: {{^  $}}
# CHECK-NEXT: bb.1:
# CHECK-NEXT: successors:
# CHECK-NEXT: liveins: $r1l, $r3d, $r4d

# CHECK: bb.2:
# CHECK-NEXT: liveins: $r1l, $r3d, $r4d