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 /// Pass to perform interprocedural constant propagation by specializing
36 /// functions
37 class FunctionSpecializationPass
38     : public PassInfoMixin<FunctionSpecializationPass> {
39 public:
40   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
41 };
42 
43 } // end namespace llvm
44 
45 #endif // LLVM_TRANSFORMS_IPO_SCCP_H
46