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LLVM
4.0.0
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Capture a change in pressure for a single pressure set. More...
#include <RegisterPressure.h>
Public Member Functions | |
| PressureChange () | |
| PressureChange (unsigned id) | |
| bool | isValid () const |
| unsigned | getPSet () const |
| unsigned | getPSetOrMax () const |
| int | getUnitInc () const |
| void | setUnitInc (int Inc) |
| bool | operator== (const PressureChange &RHS) const |
Capture a change in pressure for a single pressure set.
UnitInc may be expressed in terms of upward or downward pressure depending on the client and will be dynamically adjusted for current liveness.
Pressure increments are tiny, typically 1-2 units, and this is only for heuristics, so we don't check UnitInc overflow. Instead, we may have a higher level assert that pressure is consistent within a region. We also effectively ignore dead defs which don't affect heuristics much.
Definition at line 93 of file RegisterPressure.h.
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Definition at line 97 of file RegisterPressure.h.
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Definition at line 98 of file RegisterPressure.h.
References assert().
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Definition at line 104 of file RegisterPressure.h.
References assert(), and isValid().
Referenced by llvm::PressureDiff::addPressureChange(), llvm::PressureDiff::dump(), llvm::RegPressureTracker::getMaxUpwardPressureDelta(), llvm::GenericScheduler::initCandidate(), llvm::ConvergingVLIWScheduler::traceCandidate(), and llvm::GenericSchedulerBase::traceCandidate().
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Definition at line 109 of file RegisterPressure.h.
Referenced by tryPressure().
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Definition at line 111 of file RegisterPressure.h.
Referenced by llvm::PressureDiff::addPressureChange(), llvm::PressureDiff::dump(), llvm::RegPressureTracker::getMaxDownwardPressureDelta(), llvm::RegPressureTracker::getMaxUpwardPressureDelta(), llvm::GenericScheduler::initCandidate(), llvm::ConvergingVLIWScheduler::SchedulingCost(), llvm::ConvergingVLIWScheduler::traceCandidate(), llvm::GenericSchedulerBase::traceCandidate(), and tryPressure().
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Definition at line 102 of file RegisterPressure.h.
Referenced by llvm::PressureDiffs::addInstruction(), llvm::PressureDiff::addPressureChange(), computeMaxPressureDelta(), llvm::PressureDiff::dump(), llvm::RegPressureTracker::getMaxUpwardPressureDelta(), getPSet(), llvm::RegPressureTracker::getUpwardPressureDelta(), llvm::GenericScheduler::initCandidate(), llvm::ConvergingVLIWScheduler::traceCandidate(), llvm::GenericSchedulerBase::traceCandidate(), and tryPressure().
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Definition at line 115 of file RegisterPressure.h.
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Definition at line 113 of file RegisterPressure.h.
Referenced by llvm::PressureDiff::addPressureChange(), computeExcessPressureDelta(), computeMaxPressureDelta(), and llvm::RegPressureTracker::getUpwardPressureDelta().
1.8.6