0b492f7fb8
Debug uses should not count as real uses, since the presence of debug information could affect the generated code. llvm-svn: 336803
24 lines
458 B
YAML
24 lines
458 B
YAML
# RUN: llc -mtriple=x86_64-unknown-linux-gnu -run-pass=machine-cp %s -o - | FileCheck %s
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# Machine copy propagation can remove dead copies. Make sure that the
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# DBG_VALUE does not keep the copy alive.
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#
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# CHECK-NOT: $ebx = COPY $eax
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--- |
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define void @fred() {
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ret void
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}
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!1 = !DIExpression()
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...
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---
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name: fred
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $eax
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$ebx = COPY $eax
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DBG_VALUE debug-use $ebx, debug-use _, !1, !1
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...
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