mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 20:12:56 +02:00
11e71061b1
Besides a general consistently benefit, the extra layer of indirection allows the mechanical part of https://reviews.llvm.org/D23256 that requires touching every transformation and analysis to be factored out cleanly. Thanks to David for the suggestion. llvm-svn: 278077
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
//===- 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, FunctionAnalysisManager &AM);
|
|
};
|
|
}
|
|
|
|
#endif // LLVM_TRANSFORMS_SCALAR_SCCP_H
|