diff options
Diffstat (limited to 'lib/CodeGen/RegisterCoalescer.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index f3b8ae33c6..674d075c4f 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -805,9 +805,7 @@ bool RegisterCoalescer::ReMaterializeTrivialDef(LiveInterval &SrcInt, LiveInterval::iterator SrcLR = SrcInt.FindLiveRangeContaining(CopyIdx); assert(SrcLR != SrcInt.end() && "Live range not found!"); VNInfo *ValNo = SrcLR->valno; - // If other defs can reach uses of this def, then it's not safe to perform - // the optimization. - if (ValNo->isPHIDef() || ValNo->isUnused() || ValNo->hasPHIKill()) + if (ValNo->isPHIDef() || ValNo->isUnused()) return false; MachineInstr *DefMI = LIS->getInstructionFromIndex(ValNo->def); if (!DefMI) |