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:

Collaboration diagram for llvm::MachineInstrExpressionTrait:

Static Public Member Functions
static MachineInstr *	getEmptyKey ()
static MachineInstr *	getTombstoneKey ()
static 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 1937 of file MachineInstr.h.

Member Function Documentation

getEmptyKey()

static MachineInstr * llvm::MachineInstrExpressionTrait::getEmptyKey ( )

inlinestatic

Definition at line 1938 of file MachineInstr.h.

Referenced by isEqual().

getHashValue()

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

static

Definition at line 2081 of file MachineInstr.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), 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()

static MachineInstr * llvm::MachineInstrExpressionTrait::getTombstoneKey ( )

inlinestatic

Definition at line 1942 of file MachineInstr.h.

Referenced by isEqual().

isEqual()

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

inlinestatic

Definition at line 1948 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