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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/LiveRangeCalc.cpp | |
| parent | 3bd71be4afe8127d8634db6366f82214509a631f (diff) | |
| download | llvm-ad6b22eb1677592aff3cf81afb65ad601a3a3a68.zip llvm-ad6b22eb1677592aff3cf81afb65ad601a3a3a68.tar.gz llvm-ad6b22eb1677592aff3cf81afb65ad601a3a3a68.tar.bz2 | |
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/LiveRangeCalc.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveRangeCalc.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/LiveRangeCalc.cpp b/llvm/lib/CodeGen/LiveRangeCalc.cpp index 1d6c3c5..d8ab791 100644 --- a/llvm/lib/CodeGen/LiveRangeCalc.cpp +++ b/llvm/lib/CodeGen/LiveRangeCalc.cpp @@ -237,7 +237,7 @@ void LiveRangeCalc::updateSSA(SlotIndexes *Indexes, assert(Alloc && "Need VNInfo allocator to create PHI-defs"); SlotIndex Start, End; tie(Start, End) = Indexes->getMBBRange(MBB); - VNInfo *VNI = I->LI->getNextValue(Start, 0, *Alloc); + VNInfo *VNI = I->LI->getNextValue(Start, *Alloc); VNI->setIsPHIDef(true); I->Value = VNI; // This block is done, we know the final value. |