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15 lines
516 B
Plaintext
15 lines
516 B
Plaintext
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# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -run-pass=postrapseudos -o - %s | FileCheck %s
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#
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# Test that a COPY with an undef source operand gets handled like an identity
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# copy rather than lowered into a target instruction with the undef flag
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# dropped.
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---
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# CHECK-LABEL: name: undef_copy
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# CHECK: %r13d = KILL undef %r0d, implicit killed %r12q, implicit-def %r12q
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name: undef_copy
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: %r12q
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%r13d = COPY undef %r0d, implicit killed %r12q, implicit-def %r12q
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