llvm/lib/Analysis/StructuralHash.cpp

   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/Module.h"
  16 #include "llvm/IR/StructuralHash.h"
  17 #include "llvm/Support/CommandLine.h"
  18
  19 using namespace llvm;
  20
  21 PreservedAnalyses StructuralHashPrinterPass::run(Module &M,
  22                                                  ModuleAnalysisManager &MAM) {
  23   OS << "Module Hash: "
  24      << Twine::utohexstr(StructuralHash(M, EnableDetailedStructuralHash))
  25      << "\n";
  26   for (Function &F : M) {
  27     if (F.isDeclaration())
  28       continue;
  29     OS << "Function " << F.getName() << " Hash: "
  30        << Twine::utohexstr(StructuralHash(F, EnableDetailedStructuralHash))
  31        << "\n";
  32   }
  33   return PreservedAnalyses::all();
  34 }