mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-19 01:34:32 +00:00
033773b057
I created this header. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227727 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
//===- EarlyCSE.h - Simple and fast CSE pass --------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \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/Function.h"
|
|
#include "llvm/IR/PassManager.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// \brief 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.
|
|
class EarlyCSEPass {
|
|
public:
|
|
static StringRef name() { return "EarlyCSEPass"; }
|
|
|
|
/// \brief Run the pass over the function.
|
|
PreservedAnalyses run(Function &F, AnalysisManager<Function> *AM);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|