diff options
Diffstat (limited to 'lib/CodeGen/SplitKit.cpp')
| -rw-r--r-- | lib/CodeGen/SplitKit.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp index 798f71465d..0d43341aa0 100644 --- a/lib/CodeGen/SplitKit.cpp +++ b/lib/CodeGen/SplitKit.cpp @@ -321,6 +321,10 @@ VNInfo *LiveIntervalMap::defValue(const VNInfo *ParentVNI, SlotIndex Idx) { // Create a new value. VNInfo *VNI = li_->getNextValue(Idx, 0, lis_.getVNInfoAllocator()); + // Preserve the PHIDef bit. + if (ParentVNI->isPHIDef() && Idx == ParentVNI->def) + VNI->setIsPHIDef(true); + // Use insert for lookup, so we can add missing values with a second lookup. std::pair<ValueMap::iterator,bool> InsP = valueMap_.insert(makeVV(ParentVNI, Idx == ParentVNI->def ? VNI : 0)); |