1 //===- SCCP.cpp - Sparse Conditional Constant Propagation -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// \file 10 // This file implements sparse conditional constant propagation and merging: 11 // 12 // Specifically, this: 13 // * Assumes values are constant unless proven otherwise 14 // * Assumes BasicBlocks are dead unless proven otherwise 15 // * Proves values to be constant, and replaces them with constants 16 // * Proves conditional branches to be unconditional 17 // 18 /// 19 //===----------------------------------------------------------------------===// 20 21 #ifndef LLVM_TRANSFORMS_SCALAR_SCCP_H 22 #define LLVM_TRANSFORMS_SCALAR_SCCP_H 23 24 #include "llvm/IR/Function.h" 25 #include "llvm/IR/PassManager.h" 26 27 namespace llvm { 28 29 /// This pass performs function-level constant propagation and merging. 30 class SCCPPass : public PassInfoMixin<SCCPPass> { 31 public: 32 PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); 33 }; 34 } 35 36 #endif // LLVM_TRANSFORMS_SCALAR_SCCP_H 37
