LLVM  14.0.0git
LoopSimplifyCFG.h
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1 //===- LoopSimplifyCFG.cpp - Loop CFG Simplification Pass -------*- 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 //
9 // This file implements the Loop SimplifyCFG Pass. This pass is responsible for
10 // basic loop CFG cleanup, primarily to assist other loop passes. If you
11 // encounter a noncanonical CFG construct that causes another loop pass to
12 // perform suboptimally, this is the place to fix it up.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
17 #define LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
18 
19 #include "llvm/Analysis/LoopInfo.h"
20 #include "llvm/IR/PassManager.h"
22 
23 namespace llvm {
24 
25 /// Performs basic CFG simplifications to assist other loop passes.
26 class LoopSimplifyCFGPass : public PassInfoMixin<LoopSimplifyCFGPass> {
27 public:
30 };
31 } // end namespace llvm
32 
33 #endif // LLVM_TRANSFORMS_SCALAR_LOOPSIMPLIFYCFG_H
llvm::PreservedAnalyses
A set of analyses that are preserved following a run of a transformation pass.
Definition: PassManager.h:155
llvm
---------------------— PointerInfo ------------------------------------—
Definition: AllocatorList.h:23
llvm::PassInfoMixin
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:374
llvm::Loop
Represents a single loop in the control flow graph.
Definition: LoopInfo.h:530
llvm::LoopStandardAnalysisResults
The adaptor from a function pass to a loop pass computes these analyses and makes them available to t...
Definition: LoopAnalysisManager.h:52
llvm::LoopSimplifyCFGPass
Performs basic CFG simplifications to assist other loop passes.
Definition: LoopSimplifyCFG.h:26
LoopInfo.h
llvm::LPMUpdater
This class provides an interface for updating the loop pass manager based on mutations to the loop ne...
Definition: LoopPassManager.h:249
llvm::LoopSimplifyCFGPass::run
PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, LoopStandardAnalysisResults &AR, LPMUpdater &U)
Definition: LoopSimplifyCFG.cpp:700
LoopPassManager.h
PassManager.h
llvm::AnalysisManager
A container for analyses that lazily runs them and caches their results.
Definition: InstructionSimplify.h:44