CombinerHelper.h File Reference

This contains common combine transformations that may be used in a combine pass,or by the target elsewhere. More...

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
#include "llvm/CodeGen/GlobalISel/Utils.h"
#include "llvm/CodeGen/Register.h"
#include "llvm/CodeGenTypes/LowLevelType.h"
#include "llvm/IR/InstrTypes.h"
#include <functional>

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Classes
struct	llvm::PreferredTuple
struct	llvm::IndexedLoadStoreMatchInfo
struct	llvm::PtrAddChain
struct	llvm::RegisterImmPair
struct	llvm::ShiftOfShiftedLogic
struct	llvm::LshrOfTruncOfLshr
struct	llvm::InstructionBuildSteps
struct	llvm::InstructionStepsMatchInfo
class	llvm::CombinerHelper

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Typedefs
using	llvm::BuildFnTy = std::function<void(MachineIRBuilder &)>
using	llvm::OperandBuildSteps

Detailed Description

This contains common combine transformations that may be used in a combine pass,or by the target elsewhere.

Targets can pick individual opcode transformations from the helper or use tryCombine which invokes all transformations. All of the transformations return true if the MachineInstruction changed and false otherwise.

Definition in file CombinerHelper.h.