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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-04 05:20:49 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-04 05:20:49 +0000 |
| commit | ad6b22eb1677592aff3cf81afb65ad601a3a3a68 (patch) | |
| tree | 520944c08ea144f579b16ebc5925f73683190eff /llvm/lib/CodeGen/StrongPHIElimination.cpp | |
| parent | 3bd71be4afe8127d8634db6366f82214509a631f (diff) | |
| download | bcm5719-llvm-ad6b22eb1677592aff3cf81afb65ad601a3a3a68.tar.gz bcm5719-llvm-ad6b22eb1677592aff3cf81afb65ad601a3a3a68.zip | |
Don't store COPY pointers in VNInfo.
If a value is defined by a COPY, that instuction can easily and cheaply
be found by getInstructionFromIndex(VNI->def).
This reduces the size of VNInfo from 24 to 16 bytes, and improves
llc compile time by 3%.
llvm-svn: 149763
Diffstat (limited to 'llvm/lib/CodeGen/StrongPHIElimination.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/StrongPHIElimination.cpp | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/StrongPHIElimination.cpp b/llvm/lib/CodeGen/StrongPHIElimination.cpp index 8c6e44bb218..9f5ec2da1e6 100644 --- a/llvm/lib/CodeGen/StrongPHIElimination.cpp +++ b/llvm/lib/CodeGen/StrongPHIElimination.cpp @@ -779,7 +779,6 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI, SlotIndex MBBStartIndex = LI->getMBBStartIdx(MBB); SlotIndex DestCopyIndex = LI->getInstructionIndex(CopyInstr); VNInfo *CopyVNI = CopyLI.getNextValue(MBBStartIndex, - CopyInstr, LI->getVNInfoAllocator()); CopyVNI->setIsPHIDef(true); CopyLI.addRange(LiveRange(MBBStartIndex, |
