RegisterPressure computed within a region of instructions delimited by TopIdx and BottomIdx. During pressure computation, the maximum pressure per register pressure set is increased. Once pressure within a region is fully computed, the live‐in and live‐out sets are recorded.
Synopsis
Declared in <llvm/CodeGen/RegisterPressure.h>
struct IntervalPressure
: RegisterPressureDescription
This is preferable to RegionPressure when LiveIntervals are available, because delimiting regions by SlotIndex is more robust and convenient than holding block iterators. The block contents can change without invalidating the pressure result.
Base Classes
Name |
Description |
Base class for register pressure results. |
Member Functions
Name |
Data Members
Name |
Description |
List of live in virtual registers or physical register units. |
|
Map of max reg pressure indexed by pressure set ID, not class ID. |
|
Record the boundary of the region being tracked. |
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