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LoopSplitter - intended to split live intervals over loop boundaries.

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Still very much under development. Comments and fixes will be forthcoming.

(This commit includes some small tweaks to LiveIntervals & LoopInfo to support the splitter)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2010-07-17 07:34:01 +00:00
parent 7e3012c345
commit 60f422f894
4 changed files with 948 additions and 3 deletions
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24
include/llvm/CodeGen/LiveIntervalAnalysis.h
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@@ -197,6 +197,26 @@ namespace llvm {
return indexes_->getMBBEndIdx(mbb);
}
bool isLiveInToMBB(const LiveInterval &li,
const MachineBasicBlock *mbb) const {
return li.liveAt(getMBBStartIdx(mbb));
}
LiveRange* findEnteringRange(LiveInterval &li,
const MachineBasicBlock *mbb) {
return li.getLiveRangeContaining(getMBBStartIdx(mbb));
}
bool isLiveOutOfMBB(const LiveInterval &li,
const MachineBasicBlock *mbb) const {
return li.liveAt(getMBBEndIdx(mbb).getPrevSlot());
}
LiveRange* findExitingRange(LiveInterval &li,
const MachineBasicBlock *mbb) {
return li.getLiveRangeContaining(getMBBEndIdx(mbb).getPrevSlot());
}
MachineBasicBlock* getMBBFromIndex(SlotIndex index) const {
return indexes_->getMBBFromIndex(index);
}
@@ -217,6 +237,10 @@ namespace llvm {
indexes_->replaceMachineInstrInMaps(MI, NewMI);
}
void InsertMBBInMaps(MachineBasicBlock *MBB) {
indexes_->insertMBBInMaps(MBB);
}
bool findLiveInMBBs(SlotIndex Start, SlotIndex End,
SmallVectorImpl<MachineBasicBlock*> &MBBs) const {
return indexes_->findLiveInMBBs(Start, End, MBBs);