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1# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=postrapseudos -o - %s | FileCheck %s2#3# Test that a COPY with an undef source operand gets handled like an identity4# copy rather than lowered into a target instruction with the undef flag5# dropped.6---7# CHECK-LABEL: name: undef_copy8# CHECK: $r13d = KILL undef $r0d, implicit killed $r12q, implicit-def $r12q9name: undef_copy10tracksRegLiveness: true11body: |12 bb.0:13 liveins: $r12q14 $r13d = COPY undef $r0d, implicit killed $r12q, implicit-def $r12q15