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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-10 01:23:55 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-10 01:23:55 +0000 |
| commit | ebf2750a70df4261d3e66144ea6bcb49d41f6efb (patch) | |
| tree | a2606b3d7daa2497a208ccdb02e101ee37a82680 /include/llvm/CodeGen/LiveIntervalAnalysis.h | |
| parent | f378f5fae3b7c35fc0f8996accf121ffe59093e2 (diff) | |
| download | llvm-ebf2750a70df4261d3e66144ea6bcb49d41f6efb.tar.gz llvm-ebf2750a70df4261d3e66144ea6bcb49d41f6efb.tar.bz2 llvm-ebf2750a70df4261d3e66144ea6bcb49d41f6efb.tar.xz | |
Optimize LiveIntervals::intervalIsInOneMBB().
No looping and binary searches necessary.
Return a pointer to the containing block instead of just a bool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150218 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/LiveIntervalAnalysis.h')
| -rw-r--r-- | include/llvm/CodeGen/LiveIntervalAnalysis.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h index 5610ed63c5..ee407cd8d8 100644 --- a/include/llvm/CodeGen/LiveIntervalAnalysis.h +++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h @@ -255,9 +255,10 @@ namespace llvm { const SmallVectorImpl<LiveInterval*> *SpillIs, bool &isLoad); - /// intervalIsInOneMBB - Returns true if the specified interval is entirely - /// within a single basic block. - bool intervalIsInOneMBB(const LiveInterval &li) const; + /// intervalIsInOneMBB - If LI is confined to a single basic block, return + /// a pointer to that block. If LI is live in to or out of any block, + /// return NULL. + MachineBasicBlock *intervalIsInOneMBB(const LiveInterval &LI) const; /// addKillFlags - Add kill flags to any instruction that kills a virtual /// register. |