A register file descriptor.
Declared in <llvm/MC/MCSchedule.h>
struct MCRegisterFileDesc;This struct allows to describe processor register files. In particular, it helps describing the size of the register file, as well as the cost of allocating a register file at register renaming stage. FIXME: this struct can be extended to provide information about the number of read/write ports to the register file. A value of zero for field 'NumPhysRegs' means: this register file has an unbounded number of physical registers.
| Name | Description |
|---|---|
AllowZeroMoveEliminationOnly | True if only moves from known-zero registers can be eliminated. |
MaxMovesEliminatedPerCycle | Max moves eliminated per cycle (zero means unlimited). |
Name | Name of this register file. |
NumPhysRegs | Number of physical registers (zero means unbounded). |
NumRegisterCostEntries | Number of register cost entries for this file. |
RegisterCostEntryIdx | Index of the first cost entry in MCExtraProcessorInfo::RegisterCostTable. |