I've been sitting on this long enough trying to find a test case. I
think the fix should go in now, but I'll keep working on the test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132701
91177308-0d34-0410-b5e6-
96231b3b80d8
for (const unsigned *AliasI = TRI->getOverlaps(Reg); *AliasI; ++AliasI) {
// Check if Ref is live.
- if (!LiveRegDefs[Reg]) continue;
+ if (!LiveRegDefs[*AliasI]) continue;
// Allow multiple uses of the same def.
- if (LiveRegDefs[Reg] == SU) continue;
+ if (LiveRegDefs[*AliasI] == SU) continue;
// Add Reg to the set of interfering live regs.
- if (RegAdded.insert(Reg))
- LRegs.push_back(Reg);
+ if (RegAdded.insert(*AliasI)) {
+ assert(*AliasI == Reg && "alias clobber"); //!!!
+ LRegs.push_back(*AliasI);
+ }
}
}