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LLVM
3.7.0
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Helper class for performant LiveRange bulk updates. More...
#include <LiveInterval.h>
Public Member Functions | |
| LiveRangeUpdater (LiveRange *lr=nullptr) | |
| Create a LiveRangeUpdater for adding segments to LR. More... | |
| ~LiveRangeUpdater () | |
| void | add (LiveRange::Segment) |
| Add a segment to LR and coalesce when possible, just like LR.addSegment(). More... | |
| void | add (SlotIndex Start, SlotIndex End, VNInfo *VNI) |
| bool | isDirty () const |
| Return true if the LR is currently in an invalid state, and flush() needs to be called. More... | |
| void | flush () |
| Flush the updater state to LR so it is valid and contains all added segments. More... | |
| void | setDest (LiveRange *lr) |
| Select a different destination live range. More... | |
| LiveRange * | getDest () const |
| Get the current destination live range. More... | |
| void | dump () const |
| void | print (raw_ostream &) const |
Helper class for performant LiveRange bulk updates.
Calling LiveRange::addSegment() repeatedly can be expensive on large live ranges because segments after the insertion point may need to be shifted. The LiveRangeUpdater class can defer the shifting when adding many segments in order.
The LiveRange will be in an invalid state until flush() is called.
Definition at line 777 of file LiveInterval.h.
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Create a LiveRangeUpdater for adding segments to LR.
LR will temporarily be in an invalid state until flush() is called.
Definition at line 788 of file LiveInterval.h.
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inline |
Definition at line 790 of file LiveInterval.h.
References flush().
| void LiveRangeUpdater::add | ( | LiveRange::Segment | Seg | ) |
Add a segment to LR and coalesce when possible, just like LR.addSegment().
Segments should be added in increasing start order for best performance.
Definition at line 1191 of file LiveInterval.cpp.
References coalescable(), llvm::LiveRange::Segment::end, llvm::LiveRange::end(), llvm::LiveRange::Segment::start, and llvm::LiveRange::Segment::valno.
Referenced by add(), llvm::LiveRange::join(), llvm::LiveRange::MergeSegmentsInAsValue(), and llvm::LiveRange::MergeValueInAsValue().
Definition at line 797 of file LiveInterval.h.
References add().
| void LiveRangeUpdater::dump | ( | ) | const |
Definition at line 1174 of file LiveInterval.cpp.
References llvm::errs(), and llvm::LiveRange::print().
| void LiveRangeUpdater::flush | ( | ) |
Flush the updater state to LR so it is valid and contains all added segments.
Definition at line 1298 of file LiveInterval.cpp.
Referenced by setDest(), and ~LiveRangeUpdater().
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inline |
Get the current destination live range.
Definition at line 817 of file LiveInterval.h.
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inline |
Return true if the LR is currently in an invalid state, and flush() needs to be called.
Definition at line 803 of file LiveInterval.h.
References llvm::SlotIndex::isValid().
Referenced by setDest().
| void LiveRangeUpdater::print | ( | raw_ostream & | OS | ) | const |
Definition at line 1151 of file LiveInterval.cpp.
References I, and llvm::make_range().
Referenced by llvm::operator<<().
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inline |
Select a different destination live range.
Definition at line 810 of file LiveInterval.h.
1.8.6