LLVM  14.0.0git
LoopIdiomRecognize.h
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1 //===- LoopIdiomRecognize.h - Loop Idiom Recognize 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 pass implements an idiom recognizer that transforms simple loops into a
10 // non-loop form. In cases that this kicks in, it can be a significant
11 // performance win.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
16 #define LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
17 
19 #include "llvm/IR/PassManager.h"
20 
21 namespace llvm {
22 
23 class Loop;
24 class LPMUpdater;
25 
26 /// Options to disable Loop Idiom Recognize, which can be shared with other
27 /// passes.
28 struct DisableLIRP {
29  /// When true, the entire pass is disabled.
30  static bool All;
31 
32  /// When true, Memset is disabled.
33  static bool Memset;
34 
35  /// When true, Memcpy is disabled.
36  static bool Memcpy;
37 };
38 
39 /// Performs Loop Idiom Recognize Pass.
40 class LoopIdiomRecognizePass : public PassInfoMixin<LoopIdiomRecognizePass> {
41 public:
44 };
45 
46 } // end namespace llvm
47 
48 #endif // LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_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::LoopIdiomRecognizePass
Performs Loop Idiom Recognize Pass.
Definition: LoopIdiomRecognize.h:40
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::DisableLIRP::All
static bool All
When true, the entire pass is disabled.
Definition: LoopIdiomRecognize.h:30
LoopAnalysisManager.h
llvm::DisableLIRP
Options to disable Loop Idiom Recognize, which can be shared with other passes.
Definition: LoopIdiomRecognize.h:28
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::LoopIdiomRecognizePass::run
PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, LoopStandardAnalysisResults &AR, LPMUpdater &U)
Definition: LoopIdiomRecognize.cpp:314
llvm::DisableLIRP::Memcpy
static bool Memcpy
When true, Memcpy is disabled.
Definition: LoopIdiomRecognize.h:36
PassManager.h
llvm::AnalysisManager
A container for analyses that lazily runs them and caches their results.
Definition: InstructionSimplify.h:44
llvm::DisableLIRP::Memset
static bool Memset
When true, Memset is disabled.
Definition: LoopIdiomRecognize.h:33