add a new CallGraphNode::replaceCallEdge method and use it from

argpromote to avoid invalidating an iterator.  This fixes PR4977.
All clang tests now pass with expensive checking (on my system 
at least).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81843 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp
index 3c584c8..5b91f3d 100644
--- a/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -589,7 +589,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
   // Construct the new function type using the new arguments.
   FunctionType *NFTy = FunctionType::get(RetTy, Params, FTy->isVarArg());
 
-  // Create the new function body and insert it into the module...
+  // Create the new function body and insert it into the module.
   Function *NF = Function::Create(NFTy, F->getLinkage(), F->getName());
   NF->copyAttributesFrom(F);
 
@@ -599,7 +599,8 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
   
   // Recompute the parameter attributes list based on the new arguments for
   // the function.
-  NF->setAttributes(AttrListPtr::get(AttributesVec.begin(), AttributesVec.end()));
+  NF->setAttributes(AttrListPtr::get(AttributesVec.begin(),
+                                     AttributesVec.end()));
   AttributesVec.clear();
 
   F->getParent()->getFunctionList().insert(F, NF);
@@ -729,8 +730,7 @@ CallGraphNode *ArgPromotion::DoPromotion(Function *F,
 
     // Update the callgraph to know that the callsite has been transformed.
     CallGraphNode *CalleeNode = CG[Call->getParent()->getParent()];
-    CalleeNode->removeCallEdgeFor(Call);
-    CalleeNode->addCalledFunction(New, NF_CGN);
+    CalleeNode->replaceCallEdge(Call, New, NF_CGN);
 
     if (!Call->use_empty()) {
       Call->replaceAllUsesWith(New);