path: root/test/CodeGen/SystemZ/regalloc-fast-invalid-kill-flag.mir

# RUN: llc -verify-machineinstrs -run-pass regallocfast -mtriple s390x-ibm-linux -o - %s | FileCheck %s
--- |
  
  @g_167 = external global [5 x i64], align 8
  define void @main() local_unnamed_addr {
    ret void
  }
...
# Make sure the usage of different subregisters on the same virtual register
# does not result in invalid kill flags.
# PR33677
---
name:            main
alignment:       2
tracksRegLiveness: true
registers:       
  - { id: 0, class: gr128bit }
  - { id: 1, class: gr64bit }
  - { id: 2, class: addr64bit }
# CHECK: %r0q = L128
# CHECK-NEXT: %r0l = COPY %r1l
# Although R0L partially redefines R0Q, it must not mark R0Q as kill
# because R1D is still live through that instruction.
# CHECK-NOT: %r0q<imp-use,kill>
# CHECK-NEXT: %r2d = COPY %r1d
# CHECK-NEXT: LARL
body:             |
  bb.0:
    %0.subreg_hl32 = COPY %0.subreg_l32
    %1 = COPY %0.subreg_l64
    %2 = LARL @g_167
    STC %1.subreg_l32, %2, 8, _

...