Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp

@@ -0,0 +1,42 @@
+//===- 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/IPO.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();
+}