LLVM 19.0.0git
InstSimplifyPass.h
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1//===- InstSimplifyPass.h ---------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9///
10/// Defines passes for running instruction simplification across chunks of IR.
11///
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_TRANSFORMS_SCALAR_INSTSIMPLIFYPASS_H
15#define LLVM_TRANSFORMS_SCALAR_INSTSIMPLIFYPASS_H
16
17#include "llvm/IR/PassManager.h"
18
19namespace llvm {
20
21/// Run instruction simplification across each instruction in the function.
22///
23/// Instruction simplification has useful constraints in some contexts:
24/// - It will never introduce *new* instructions.
25/// - There is no need to iterate to a fixed point.
26///
27/// Many passes use instruction simplification as a library facility, but it may
28/// also be useful (in tests and other contexts) to have access to this very
29/// restricted transform at a pass granularity. However, for a much more
30/// powerful and comprehensive peephole optimization engine, see the
31/// `instcombine` pass instead.
32class InstSimplifyPass : public PassInfoMixin<InstSimplifyPass> {
33public:
35};
36
37} // end namespace llvm
38
39#endif // LLVM_TRANSFORMS_SCALAR_INSTSIMPLIFYPASS_H
#define F(x, y, z)
Definition: MD5.cpp:55
This header defines various interfaces for pass management in LLVM.
A container for analyses that lazily runs them and caches their results.
Definition: PassManager.h:348
Run instruction simplification across each instruction in the function.
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM)
A set of analyses that are preserved following a run of a transformation pass.
Definition: Analysis.h:109
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:91