dragonegg buildbots back to life. Original commit message:
Teach early dup how to duplicate basic blocks with one successor and only phi instructions
into more complex blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133430
91177308-0d34-0410-b5e6-
96231b3b80d8
DenseSet<unsigned> UsedByPhi;
getRegsUsedByPHIs(*TailBB, &UsedByPhi);
- if (isSimpleBB(TailBB))
+ if (0 && isSimpleBB(TailBB)) // Disabled to see if doing so fixes buildbots.
return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi, Copies);
// Iterate through all the unique predecessors and tail-duplicate this