1# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=postrapseudos -o - %s | FileCheck %s
2#
3# Test that a COPY with an undef source operand gets handled like an identity
4# copy rather than lowered into a target instruction with the undef flag
5# dropped.
6---
7# CHECK-LABEL: name: undef_copy
8# CHECK: $r13d = KILL undef $r0d, implicit killed $r12q, implicit-def $r12q
9name: undef_copy
10tracksRegLiveness: true
11body: |
12  bb.0:
13    liveins: $r12q
14    $r13d = COPY undef $r0d, implicit killed $r12q, implicit-def $r12q
15