blob: 55045f13b1e7b730bfecc8c713bee3be425b0d7b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- EarlyCSE.h - Simple and fast CSE pass --------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// This file provides the interface for a simple, fast CSE pass.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
#define LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
#include "llvm/IR/PassManager.h"
namespace llvm {
class Function;
/// A simple and fast domtree-based CSE pass.
///
/// This pass does a simple depth-first walk over the dominator tree,
/// eliminating trivially redundant instructions and using instsimplify to
/// canonicalize things as it goes. It is intended to be fast and catch obvious
/// cases so that instcombine and other passes are more effective. It is
/// expected that a later pass of GVN will catch the interesting/hard cases.
struct EarlyCSEPass : PassInfoMixin<EarlyCSEPass> {
EarlyCSEPass(bool UseMemorySSA = false) : UseMemorySSA(UseMemorySSA) {}
/// Run the pass over the function.
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
void printPipeline(raw_ostream &OS,
function_ref<StringRef(StringRef)> MapClassName2PassName);
bool UseMemorySSA;
};
} // end namespace llvm
#endif // LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
