[llvm] r187018 - Replace with a "null" RAUW with an assert since we'd actually like

[Eric Christopher]

Author: echristo
Date: Tue Jul 23 20:51:12 2013
New Revision: 187018

URL: http://llvm.org/viewvc/llvm-project?rev=187018&view=rev
Log:
Replace with a "null" RAUW with an assert since we'd actually like
to assume we're replacing. Clarify comments.

Modified:
    llvm/trunk/lib/IR/DebugInfo.cpp

Modified: llvm/trunk/lib/IR/DebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/DebugInfo.cpp?rev=187018&r1=187017&r2=187018&view=diff
==============================================================================
--- llvm/trunk/lib/IR/DebugInfo.cpp (original)
+++ llvm/trunk/lib/IR/DebugInfo.cpp Tue Jul 23 20:51:12 2013
@@ -327,11 +327,11 @@ unsigned DIArray::getNumElements() const
   return DbgNode->getNumOperands();
 }
 
-/// replaceAllUsesWith - Replace all uses of debug info referenced by
-/// this descriptor.
+/// replaceAllUsesWith - Replace all uses of the MDNode used by this
+/// type with the one in the passed descriptor.
 void DIType::replaceAllUsesWith(DIDescriptor &D) {
-  if (!DbgNode)
-    return;
+
+  assert(DbgNode && "Trying to replace an unverified type!");
 
   // Since we use a TrackingVH for the node, its easy for clients to manufacture
   // legitimate situations where they want to replaceAllUsesWith() on something
@@ -347,11 +347,11 @@ void DIType::replaceAllUsesWith(DIDescri
   }
 }
 
-/// replaceAllUsesWith - Replace all uses of debug info referenced by
-/// this descriptor.
+/// replaceAllUsesWith - Replace all uses of the MDNode used by this
+/// type with the one in D.
 void DIType::replaceAllUsesWith(MDNode *D) {
-  if (!DbgNode)
-    return;
+
+  assert(DbgNode && "Trying to replace an unverified type!");
 
   // Since we use a TrackingVH for the node, its easy for clients to manufacture
   // legitimate situations where they want to replaceAllUsesWith() on something