GVN.h File Reference

This file provides the interface for LLVM's Global Value Numbering pass which eliminates fully redundant instructions. More...

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Compiler.h"
#include <cstdint>
#include <optional>
#include <utility>
#include <variant>
#include <vector>

Go to the source code of this file.

Classes
struct	llvm::GVNOptions
	A set of parameters to control various transforms performed by GVN pass. More...
class	llvm::GVNPass
	The core GVN pass object. More...
class	llvm::GVNPass::ValueTable
	This class holds the mapping between values and value numbers. More...
struct	llvm::GVNPass::LeaderMap::LeaderTableEntry
class	llvm::GVNPass::LeaderMap::leader_iterator
struct	llvm::GVNHoistPass
	A simple and fast domtree-based GVN pass to hoist common expressions from sibling branches. More...
struct	llvm::GVNSinkPass
	Uses an "inverted" value numbering to decide the similarity of expressions and sinks similar expressions into successors. More...

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.
namespace	llvm::gvn
	A private "module" namespace for types and utilities used by GVN.

Functions
LLVM_ABI FunctionPass *	llvm::createGVNPass ()
	Create a legacy GVN pass.

Detailed Description

This file provides the interface for LLVM's Global Value Numbering pass which eliminates fully redundant instructions.

It also does somewhat Ad-Hoc PRE and dead load elimination.

Definition in file GVN.h.