Update call graph after inlining invoke.

Patch by Jay Foad.

llvm-svn: 68120

1 files changed, 19 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Utils/InlineFunction.cpp b/llvm/lib/Transforms/Utils/InlineFunction.cpp
index a96c7ceaa8e..1b677fbc2bc 100644
--- a/llvm/lib/Transforms/Utils/InlineFunction.cpp
+++ b/llvm/lib/Transforms/Utils/InlineFunction.cpp
@@ -41,7 +41,8 @@ bool llvm::InlineFunction(InvokeInst *II, CallGraph *CG, const TargetData *TD) {
 /// block of the inlined code (the last block is the end of the function),
 /// and InlineCodeInfo is information about the code that got inlined.
 static void HandleInlinedInvoke(InvokeInst *II, BasicBlock *FirstNewBlock,
-                                ClonedCodeInfo &InlinedCodeInfo) {
+                                ClonedCodeInfo &InlinedCodeInfo,
+                                CallGraph *CG) {
   BasicBlock *InvokeDest = II->getUnwindDest();
   std::vector<Value*> InvokeDestPHIValues;
 
@@ -93,6 +94,22 @@ static void HandleInlinedInvoke(InvokeInst *II, BasicBlock *FirstNewBlock,
           // Make sure that anything using the call now uses the invoke!
           CI->replaceAllUsesWith(II);
 
+          // Update the callgraph.
+          if (CG) {
+            // We should be able to do this:
+            //   (*CG)[Caller]->replaceCallSite(CI, II);
+            // but that fails if the old call site isn't in the call graph,
+            // which, because of LLVM bug 3601, it sometimes isn't.
+            CallGraphNode *CGN = (*CG)[Caller];
+            for (CallGraphNode::iterator NI = CGN->begin(), NE = CGN->end();
+                 NI != NE; ++NI) {
+              if (NI->first == CI) {
+                NI->first = II;
+                break;
+              }
+            }
+          }
+
           // Delete the unconditional branch inserted by splitBasicBlock
           BB->getInstList().pop_back();
           Split->getInstList().pop_front();  // Delete the original call
@@ -433,7 +450,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD) {
   // any inlined 'unwind' instructions into branches to the invoke exception
   // destination, and call instructions into invoke instructions.
   if (InvokeInst *II = dyn_cast<InvokeInst>(TheCall))
-    HandleInlinedInvoke(II, FirstNewBlock, InlinedFunctionInfo);
+    HandleInlinedInvoke(II, FirstNewBlock, InlinedFunctionInfo, CG);
 
   // If we cloned in _exactly one_ basic block, and if that block ends in a
   // return instruction, we splice the body of the inlined callee directly into