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# RUN: llc -mtriple=amdgcn--amdpal -run-pass=register-coalescer -o - %s | FileCheck %s
# Check that this doesn't crash. Check for some legitimate output.
# CHECK: S_CBRANCH_SCC1
---
name: fred
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.1, %bb.2
liveins: $sgpr4
undef %0.sub2:sgpr_128 = COPY $sgpr4
%3 = IMPLICIT_DEF
S_CBRANCH_SCC1 %bb.2, implicit undef $scc
bb.1:
successors: %bb.2
%0.sub0:sgpr_128 = COPY %0.sub2
%0.sub1:sgpr_128 = COPY %0.sub2
%1:sgpr_128 = COPY %0
%2:sgpr_128 = COPY %0
%0:sgpr_128 = COPY %2
%3:sgpr_128 = COPY %1
bb.2:
$sgpr1 = COPY %3
$sgpr2 = COPY %0.sub2
...
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