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| author | Lang Hames <lhames@gmail.com> | 2012-02-19 06:13:56 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2012-02-19 06:13:56 +0000 |
| commit | 4a0b2d658ae9e296598f8c8ac36c7fe571a7eec5 (patch) | |
| tree | e430ea7f63c72d102b3cc756151548b49c353c84 /lib | |
| parent | dd637ae0c316334cd7b353c96ae270cc0d9095e4 (diff) | |
| download | llvm-4a0b2d658ae9e296598f8c8ac36c7fe571a7eec5.tar.gz llvm-4a0b2d658ae9e296598f8c8ac36c7fe571a7eec5.tar.bz2 llvm-4a0b2d658ae9e296598f8c8ac36c7fe571a7eec5.tar.xz | |
Simplify moveEnteringDownFrom rules.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150914 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 6c5dd0e611..66c65b4a31 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -1205,17 +1205,9 @@ private: void moveEnteringDownFrom(SlotIndex OldIdx, IntRangePair& P) { LiveInterval* LI = P.first; LiveRange* LR = P.second; - bool LiveThrough = LR->end > OldIdx.getRegSlot(); - if (LiveThrough) { - MachineBasicBlock* MBB = LIS.getInstructionFromIndex(NewIdx)->getParent(); - bool LiveOut = LR->end >= LIS.getSlotIndexes()->getMBBEndIdx(MBB); - if (!LiveOut) { - moveKillFlags(LI->reg, LR->end, NewIdx); - LR->end = NewIdx.getRegSlot(LR->end.isEarlyClobber()); - } - } else { - // Not live through. Easy - just update the range endpoint. - LR->end = NewIdx.getRegSlot(LR->end.isEarlyClobber()); + if (NewIdx > LR->end) { + moveKillFlags(LI->reg, LR->end, NewIdx); + LR->end = NewIdx.getRegSlot(); } } |