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1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py2# RUN: llc -mtriple=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass=register-coalescer -o - %s | FileCheck -check-prefix=GCN %s3 4# Test used to crash with message:5# JoinVals::ConflictResolution (anonymous namespace)::JoinVals::analyzeValue(unsigned int, (anonymous namespace)::JoinVals &): Assertion `DefMI != nullptr' failed6 7---8name: test9tracksRegLiveness: true10body: |11 ; GCN-LABEL: name: test12 ; GCN: bb.0:13 ; GCN-NEXT: successors: %bb.2(0x80000000)14 ; GCN-NEXT: {{ $}}15 ; GCN-NEXT: undef [[DEF:%[0-9]+]].sub0:vreg_128 = IMPLICIT_DEF16 ; GCN-NEXT: [[DEF:%[0-9]+]].sub1:vreg_128 = IMPLICIT_DEF17 ; GCN-NEXT: S_BRANCH %bb.218 ; GCN-NEXT: {{ $}}19 ; GCN-NEXT: bb.1:20 ; GCN-NEXT: successors: %bb.2(0x80000000)21 ; GCN-NEXT: {{ $}}22 ; GCN-NEXT: [[DEF:%[0-9]+]]:vreg_128 = IMPLICIT_DEF23 ; GCN-NEXT: {{ $}}24 ; GCN-NEXT: bb.2:25 ; GCN-NEXT: [[DEF:%[0-9]+]].sub2:vreg_128 = COPY undef %3:sreg_3226 ; GCN-NEXT: S_ENDPGM 0, implicit [[DEF]]27 bb.0:28 undef %0.sub0:vreg_128 = IMPLICIT_DEF29 %0.sub1:vreg_128 = IMPLICIT_DEF30 %1:vreg_128 = COPY %031 %2:vreg_128 = COPY killed %032 S_BRANCH %bb.233 34 bb.1:35 %1:vreg_128 = COPY killed undef %136 37 bb.2:38 %1.sub2:vreg_128 = COPY undef %3:sreg_3239 %2:vreg_128 = COPY killed %140 %4:vreg_128 = COPY killed %241 S_ENDPGM 0, implicit killed %442 43...44