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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-26 22:36:02 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-10-26 22:36:02 +0000 |
| commit | 79c0262fa8516d0b673b2fcacff920dcc62a9b94 (patch) | |
| tree | 57a5ff724d469467b8e7eb341c8c3f5fe179156c /lib/CodeGen/SplitKit.cpp | |
| parent | 7e13efad388f86a4adcb48ec164ee0ba154d0296 (diff) | |
Preserve PHIDef bits in cloned values during splitting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117405 91177308-0d34-0410-b5e6-96231b3b80d8
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)); |