third_party/llvm-7.0/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp

//===- StripNonLineTableDebugInfo.cpp -- Strip parts of Debug Info --------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/IR/DebugInfo.h"
#include "llvm/Pass.h"
#include "llvm/Transforms/Utils.h"
using namespace llvm;

namespace {

/// This pass strips all debug info that is not related line tables.
/// The result will be the same as if the program where compiled with
/// -gline-tables-only.
struct StripNonLineTableDebugInfo : public ModulePass {
  static char ID; // Pass identification, replacement for typeid
  StripNonLineTableDebugInfo() : ModulePass(ID) {
    initializeStripNonLineTableDebugInfoPass(*PassRegistry::getPassRegistry());
  }

  void getAnalysisUsage(AnalysisUsage &AU) const override {
    AU.setPreservesAll();
  }

  bool runOnModule(Module &M) override {
    return llvm::stripNonLineTableDebugInfo(M);
  }
};
}

char StripNonLineTableDebugInfo::ID = 0;
INITIALIZE_PASS(StripNonLineTableDebugInfo, "strip-nonlinetable-debuginfo",
                "Strip all debug info except linetables", false, false)

ModulePass *llvm::createStripNonLineTableDebugInfoPass() {
  return new StripNonLineTableDebugInfo();
}