third_party/llvm-7.0/llvm/test/CodeGen/SystemZ/no-postra-sink.mir

# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=postra-machine-sink -verify-machineinstrs -o - %s  | FileCheck %s

---
# Don't sink COPY to bb.2 since SLLK define r13l that is aliased with r12q.
# CHECK-LABEL: name: donot_sink_copy
# CHECK-LABEL: bb.0:
# CHECK: renamable $r0l = COPY renamable $r12l, implicit killed $r12q
# CHECK-LABEL: bb.2:
# CHECK-NOT: COPY
name:            donot_sink_copy
tracksRegLiveness: true
body:             |
  bb.0 :
    successors: %bb.1, %bb.2
    liveins: $r2d, $r3d, $r4d, $r5d, $r12q

    renamable $r0l = COPY renamable $r12l, implicit killed $r12q
    renamable $r13l = SLLK renamable $r4l, $noreg, 1
    CHIMux renamable $r3l, 0, implicit-def $cc, implicit killed $r3d
    BRC 14, 6, %bb.2, implicit killed $cc
    J %bb.1

  bb.1:
    successors:

  bb.2:
    successors:
    liveins: $r2d, $r4d, $r5d, $r0l, $r13l

    renamable $r0d = LGFR killed renamable $r0l
    renamable $r11d = LGFR killed renamable $r13l
...

# Don't sink COPY to bb.2 since SLLK use r1l that is aliased with r0q.
# CHECK-LABEL: name: donot_sink_copy2
# CHECK-LABEL: bb.0:
# CHECK: renamable $r0l = COPY renamable $r12l, implicit-def $r0q
# CHECK-LABEL: bb.2:
# CHECK-NOT: COPY
name:            donot_sink_copy2
tracksRegLiveness: true
body:             |
  bb.0 :
    successors: %bb.1, %bb.2
    liveins: $r2d, $r3d, $r4d, $r5d, $r12q

    renamable $r0l = COPY renamable $r12l, implicit def $r0q
    renamable $r13l = SLLK renamable $r1l, $noreg, 1
    CHIMux renamable $r3l, 0, implicit-def $cc, implicit killed $r3d
    BRC 14, 6, %bb.2, implicit killed $cc
    J %bb.1

  bb.1:
    successors:

  bb.2:
    successors:
    liveins: $r2d, $r4d, $r5d, $r0l, $r13l

    renamable $r0d = LGFR killed renamable $r0l
    renamable $r11d = LGFR killed renamable $r13l
...