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      1 //===- SCCP.h - Sparse Conditional Constant Propagation ---------*- C++ -*-===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 // This pass implements  interprocedural sparse conditional constant
     10 // 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 #ifndef LLVM_TRANSFORMS_IPO_SCCP_H
     21 #define LLVM_TRANSFORMS_IPO_SCCP_H
     22 
     23 #include "llvm/IR/PassManager.h"
     24 
     25 namespace llvm {
     26 
     27 class Module;
     28 
     29 /// Pass to perform interprocedural constant propagation.
     30 class IPSCCPPass : public PassInfoMixin<IPSCCPPass> {
     31 public:
     32   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
     33 };
     34 
     35 } // end namespace llvm
     36 
     37 #endif // LLVM_TRANSFORMS_IPO_SCCP_H
     38