1 //===- StructuralHash.cpp - Function Hash Printing ------------------------===//
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 file defines the StructuralHashPrinterPass which is used to show
10 // the structural hash of all functions in a module and the module itself.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/Analysis/StructuralHash.h"
15 #include "llvm/IR/StructuralHash.h"
16 #include "llvm/Support/CommandLine.h"
17 
18 using namespace llvm;
19 
20 PreservedAnalyses StructuralHashPrinterPass::run(Module &M,
21                                                  ModuleAnalysisManager &MAM) {
22   OS << "Module Hash: "
23      << Twine::utohexstr(StructuralHash(M, EnableDetailedStructuralHash))
24      << "\n";
25   for (Function &F : M) {
26     if (F.isDeclaration())
27       continue;
28     OS << "Function " << F.getName() << " Hash: "
29        << Twine::utohexstr(StructuralHash(F, EnableDetailedStructuralHash))
30        << "\n";
31   }
32   return PreservedAnalyses::all();
33 }
34