Fix a crasher where when we're attempting to replace a type

[oota-llvm.git] / lib / IR / AutoUpgrade.cpp

diff --git a/lib/IR/AutoUpgrade.cpp b/lib/IR/AutoUpgrade.cpp
index 6f79919f241d74351261ee02a76a61807b50ba5f..4340c057c1bd9469ef9a4a50b69a2164b949141e 100644 (file)
--- a/lib/IR/AutoUpgrade.cpp
+++ b/lib/IR/AutoUpgrade.cpp
@@ -12,7 +12,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/AutoUpgrade.h"
+#include "llvm/DebugInfo.h"
 #include "llvm/IR/Constants.h"
+#include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instruction.h"
@@ -489,3 +491,18 @@ Value *llvm::UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy) {
 
   return 0;
 }
+
+/// Check the debug info version number, if it is out-dated, drop the debug
+/// info. Return true if module is modified.
+bool llvm::UpgradeDebugInfo(Module &M) {
+  unsigned Version = getDebugMetadataVersionFromModule(M);
+  if (Version == DEBUG_METADATA_VERSION)
+    return false;
+
+  bool RetCode = StripDebugInfo(M);
+  if (RetCode) {
+    DiagnosticInfoDebugMetadataVersion DiagVersion(M, Version);
+    M.getContext().diagnose(DiagVersion);
+  }
+  return RetCode;
+}