[llvm-commits] [llvm] r84113 - in /llvm/trunk: include/llvm/Metadata.h lib/VMCore/Metadata.cpp

[Devang Patel]

Author: dpatel
Date: Wed Oct 14 12:02:49 2009
New Revision: 84113

URL: http://llvm.org/viewvc/llvm-project?rev=84113&view=rev
Log:
Add copyMD to copy metadata from one instruction to another instruction.

Modified:
    llvm/trunk/include/llvm/Metadata.h
    llvm/trunk/lib/VMCore/Metadata.cpp

Modified: llvm/trunk/include/llvm/Metadata.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Metadata.h?rev=84113&r1=84112&r2=84113&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Metadata.h (original)
+++ llvm/trunk/include/llvm/Metadata.h Wed Oct 14 12:02:49 2009
@@ -351,6 +351,10 @@
   /// removeMDs - Remove all metadata attached with an instruction.
   void removeMDs(const Instruction *Inst);
 
+  /// copyMD - If metadata is attached with Instruction In1 then attach
+  /// the same metadata to In2.
+  void copyMD(Instruction *In1, Instruction *In2);
+
   /// getHandlerNames - Get handler names. This is used by bitcode
   /// writer.
   const StringMap<unsigned> *getHandlerNames();

Modified: llvm/trunk/lib/VMCore/Metadata.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/VMCore/Metadata.cpp?rev=84113&r1=84112&r2=84113&view=diff

==============================================================================
--- llvm/trunk/lib/VMCore/Metadata.cpp (original)
+++ llvm/trunk/lib/VMCore/Metadata.cpp Wed Oct 14 12:02:49 2009
@@ -359,6 +359,20 @@
   MetadataStore.erase(I);
 }
 
+/// copyMD - If metadata is attached with Instruction In1 then attach
+/// the same metadata to In2.
+void MetadataContext::copyMD(Instruction *In1, Instruction *In2) {
+  assert (In1 && In2 && "Invalid instruction!");
+   MDStoreTy::iterator I = MetadataStore.find(In1);
+  if (I == MetadataStore.end())
+    return;
+
+  MDMapTy &In1Info = I->second;
+  MDMapTy In2Info;
+  for (MDMapTy::iterator I = In1Info.begin(), E = In1Info.end(); I != E; ++I)
+    if (MDNode *MD = dyn_cast_or_null<MDNode>(I->second))
+      addMD(I->first, MD, In2);
+}
 
 /// getMD - Get the metadata of given kind attached with an Instruction.
 /// If the metadata is not found then return 0.
@@ -416,3 +430,4 @@
   // FIXME : Give custom handlers a chance to override this.
   ValueIsCloned(I1, I2);
 }
+