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
|
//===- SCCP.cpp - Sparse Conditional Constant Propagation -------*- 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 implements sparse conditional constant propagation and merging:
//
// Specifically, this:
// * Assumes values are constant unless proven otherwise
// * Assumes BasicBlocks are dead unless proven otherwise
// * Proves values to be constant, and replaces them with constants
// * Proves conditional branches to be unconditional
//
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_SCALAR_SCCP_H
#define LLVM_TRANSFORMS_SCALAR_SCCP_H
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
/// This pass performs function-level constant propagation and merging.
class SCCPPass : public PassInfoMixin<SCCPPass> {
public:
PreservedAnalyses run(Function &F, AnalysisManager<Function> &AM);
};
}
#endif // LLVM_TRANSFORMS_SCALAR_SCCP_H
|
