llvm::MachineInstrExpressionTrait Struct Reference

Special DenseMapInfo traits to compare MachineInstr* by value of the instruction rather than by pointer value. More...

#include "llvm/CodeGen/MachineInstr.h"

Inheritance diagram for llvm::MachineInstrExpressionTrait:

Static Public Member Functions
static MachineInstr *	getEmptyKey ()
static MachineInstr *	getTombstoneKey ()
static LLVM_ABI unsigned	getHashValue (const MachineInstr *const &MI)
static bool	isEqual (const MachineInstr *const &LHS, const MachineInstr *const &RHS)

Detailed Description

Special DenseMapInfo traits to compare MachineInstr* by value of the instruction rather than by pointer value.

The hashing and equality testing functions ignore definitions so this is useful for CSE, etc.

Definition at line 2131 of file MachineInstr.h.

Member Function Documentation

getEmptyKey()

MachineInstr * llvm::MachineInstrExpressionTrait::getEmptyKey ( )

inlinestatic

Definition at line 2132 of file MachineInstr.h.

Referenced by isEqual().

getHashValue()

unsigned MachineInstrExpressionTrait::getHashValue ( const MachineInstr *const & MI )

static

Definition at line 2333 of file MachineInstr.cpp.

References llvm::MachineOperand::getReg(), llvm::hash_combine_range(), llvm::hash_value(), llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), llvm::Register::isVirtual(), MI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::SmallVectorImpl< T >::reserve().

getTombstoneKey()

MachineInstr * llvm::MachineInstrExpressionTrait::getTombstoneKey ( )

inlinestatic

Definition at line 2136 of file MachineInstr.h.

Referenced by isEqual().

isEqual()

bool llvm::MachineInstrExpressionTrait::isEqual ( const MachineInstr *const & LHS, const MachineInstr *const & RHS )

inlinestatic

Definition at line 2142 of file MachineInstr.h.

References getEmptyKey(), getTombstoneKey(), llvm::MachineInstr::IgnoreVRegDefs, LHS, and RHS.

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The documentation for this struct was generated from the following files:

• include/llvm/CodeGen/MachineInstr.h
• lib/CodeGen/MachineInstr.cpp