llvm::RegisterBankInfo

Synopsis

Declared in <llvm/CodeGen/RegisterBankInfo.h>

class RegisterBankInfo;

Name	Description
`InstructionMapping`	Helper class that represents how the value of an instruction may be mapped and what is the related cost of such mapping.
`OperandsMapper`	Helper class used to get/create the virtual registers that will be used to replace the MachineOperand when applying a mapping.
`PartialMapping`	Helper struct that represents how a value is partially mapped into a register.
`ValueMapping`	Helper struct that represents how a value is mapped through different register banks.

Name	Description
`InstructionMappings`	Convenient type to represent the alternatives for mapping an instruction.

Name	Description
`~RegisterBankInfo` [destructor] [virtual]	Destroy a register bank info.
`applyMapping`	Apply `OpdMapper.getInstrMapping()` to `OpdMapper.getMI().`
`applyMappingImpl` [virtual]	See ::applyMapping.
`cannotCopy`	Return true if emitting a copy from `Src` to `Dst` is impossible.
`copyCost` [virtual]	Get the cost of a copy from `B` to `A.`
`getBreakDownCost` [virtual]	Get the cost of using `ValMapping` to decompose a register.
`getInstrAlternativeMappings` [virtual]	Get the alternative mappings for `MI.` Alternative in the sense different from getInstrMapping.
`getInstrMapping` [virtual]	Get the mapping of the different operands of `MI` on the register bank.
`getInstrPossibleMappings`	Get the possible mappings for `MI.`
`getInstructionMapping`	Method to get a uniquely generated InstructionMapping.
`getInvalidInstructionMapping`	Method to get a uniquely generated invalid InstructionMapping.
`getMaximumSize`	Get the maximum size in bits that fits in the given register bank.
`getNumRegBanks`	Get the total number of register banks.
`getRegBank`	`getRegBank` overloads
`getRegBankFromConstraints`	Get the register bank for the `OpIdx-th` operand of `MI` form the encoding constraints, if any.
`getRegBankFromRegClass` [virtual]	Get a register bank that covers `RC.`
`getSizeInBits`	Get the size in bits of `Reg.`
`isDivergentRegBank` [virtual]	Returns true if the register bank is considered divergent.
`verify`	Check that information hold by this instance make sense for the given `TRI.`

Name	Description
`applyDefaultMapping`	Apply a default-like mapping to `OpdMapper.`
`constrainGenericRegister`	Constrain the (possibly generic) virtual register `Reg` to `RC.`

Name	Description
`DefaultMappingID`	Identifier for instruction mappings generated by target-independent code.
`InvalidMappingID`	Identifier used when the related instruction mapping instance is generated by the default constructor. Make sure not to use that identifier.

Name	Description
`RegisterBankInfo` [constructor]	Constructors
`operator=` [deleted]	Copy assignment is deleted; RegisterBankInfo is not copyable.
`getInstrMappingImpl`	Try to get the mapping of `MI.` See getInstrMapping for more details on what a mapping represents.
`getMinimalPhysRegClass`	Get the MinimalPhysRegClass for Reg.
`getOperandsMapping`	`getOperandsMapping` overloads
`getPartialMapping`	Get the uniquely generated PartialMapping for the given arguments.
`getRegBank`	Get the register bank identified by `ID.`
`getValueMapping`	`getValueMapping` overloads

Name	Description
`HwMode`	Current HwMode for the target.
`MapOfInstructionMappings`	Keep dynamically allocated InstructionMapping in a separate map. This shouldn't be needed when everything gets TableGen'ed.
`MapOfOperandsMappings`	Keep dynamically allocated array of ValueMapping in a separate map. This shouldn't be needed when everything gets TableGen'ed.
`MapOfPartialMappings`	Keep dynamically allocated PartialMapping in a separate map. This shouldn't be needed when everything gets TableGen'ed.
`MapOfValueMappings`	Keep dynamically allocated ValueMapping in a separate map. This shouldn't be needed when everything gets TableGen'ed.
`NumRegBanks`	Total number of register banks.
`PhysRegMinimalRCs`	Getting the minimal register class of a physreg is expensive. Cache this information as we get it.
`RegBanks`	Hold the set of supported register banks.
`Sizes`	Hold the sizes of the register banks for all HwModes.