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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-27 21:11:14 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-27 21:11:14 +0000 |
| commit | b18d779b35909cd5b753871f8bf2ff4f6c17ace1 (patch) | |
| tree | 85a03c2c0004297bbff4f7632346c67b04d7805c /lib/CodeGen/StrongPHIElimination.cpp | |
| parent | 3dfa38a5bf431ec78272bb06c47d7c28616d276a (diff) | |
| download | llvm-b18d779b35909cd5b753871f8bf2ff4f6c17ace1.tar.gz llvm-b18d779b35909cd5b753871f8bf2ff4f6c17ace1.tar.bz2 llvm-b18d779b35909cd5b753871f8bf2ff4f6c17ace1.tar.xz | |
Eliminate the IS_PHI_DEF flag and VNInfo::setIsPHIDef().
A value number is a PHI def if and only if it begins at a block
boundary. This can be derived from the def slot, a separate flag is not
necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160893 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/StrongPHIElimination.cpp')
| -rw-r--r-- | lib/CodeGen/StrongPHIElimination.cpp | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp index c6fdc73824..389dc973ac 100644 --- a/lib/CodeGen/StrongPHIElimination.cpp +++ b/lib/CodeGen/StrongPHIElimination.cpp @@ -744,7 +744,6 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI, SlotIndex PHIIndex = LI->getInstructionIndex(PHI); VNInfo *DestVNI = DestLI.getVNInfoAt(PHIIndex.getRegSlot()); assert(DestVNI); - DestVNI->setIsPHIDef(true); // Prior to PHI elimination, the live ranges of PHIs begin at their defining // instruction. After PHI elimination, PHI instructions are replaced by VNs @@ -777,7 +776,6 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI, SlotIndex DestCopyIndex = LI->getInstructionIndex(CopyInstr); VNInfo *CopyVNI = CopyLI.getNextValue(MBBStartIndex, LI->getVNInfoAllocator()); - CopyVNI->setIsPHIDef(true); CopyLI.addRange(LiveRange(MBBStartIndex, DestCopyIndex.getRegSlot(), CopyVNI)); |