llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp

   1 //===- StripNonLineTableDebugInfo.cpp -- Strip parts of Debug Info --------===//
   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 #include "llvm/Transforms/Utils/StripNonLineTableDebugInfo.h"
  10 #include "llvm/IR/DebugInfo.h"
  11 #include "llvm/InitializePasses.h"
  12 #include "llvm/Pass.h"
  13 #include "llvm/Transforms/Utils.h"
  14 using namespace llvm;
  15
  16 namespace {
  17
  18 /// This pass strips all debug info that is not related line tables.
  19 /// The result will be the same as if the program where compiled with
  20 /// -gline-tables-only.
  21 struct StripNonLineTableDebugLegacyPass : public ModulePass {
  22   static char ID; // Pass identification, replacement for typeid
  23   StripNonLineTableDebugLegacyPass() : ModulePass(ID) {
  24     initializeStripNonLineTableDebugLegacyPassPass(
  25         *PassRegistry::getPassRegistry());
  26   }
  27
  28   void getAnalysisUsage(AnalysisUsage &AU) const override {
  29     AU.setPreservesAll();
  30   }
  31
  32   bool runOnModule(Module &M) override {
  33     return llvm::stripNonLineTableDebugInfo(M);
  34   }
  35 };
  36 }
  37
  38 char StripNonLineTableDebugLegacyPass::ID = 0;
  39 INITIALIZE_PASS(StripNonLineTableDebugLegacyPass,
  40                 "strip-nonlinetable-debuginfo",
  41                 "Strip all debug info except linetables", false, false)
  42
  43 ModulePass *llvm::createStripNonLineTableDebugLegacyPass() {
  44   return new StripNonLineTableDebugLegacyPass();
  45 }
  46
  47 PreservedAnalyses
  48 StripNonLineTableDebugInfoPass::run(Module &M, ModuleAnalysisManager &AM) {
  49   llvm::stripNonLineTableDebugInfo(M);
  50   return PreservedAnalyses::all();
  51 }