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Actually update the call graph as the inliner changes it. This allows us to

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execute other CallGraphSCCPasses after the inliner without crashing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12861 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-04-12 05:37:29 +00:00
parent b81c021f14
commit ce1a3a292d
1 changed files with 20 additions and 1 deletions
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21
lib/Transforms/IPO/Inliner.cpp
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@ -93,7 +93,21 @@ bool Inliner::runOnSCC(const std::vector<CallGraphNode*> &SCC) {
// Attempt to inline the function...
if (InlineFunction(CS)) {
++NumInlined;
// Update the call graph by deleting the edge from Callee to Caller
CallGraphNode *CalleeNode = CG[Callee];
CallGraphNode *CallerNode = CG[Caller];
CallerNode->removeCallEdgeTo(CalleeNode);
// Since we inlined all uninlinable call sites in the callee into the
// caller, add edges from the caller to all of the callees of the
// callee.
for (CallGraphNode::iterator I = CalleeNode->begin(),
E = CalleeNode->end(); I != E; ++I)
CallerNode->addCalledFunction(*I);
// If the only remaining use of the function is a dead constant
// pointer ref, remove it.
if (Callee->hasOneUse())
if (ConstantPointerRef *CPR =
dyn_cast<ConstantPointerRef>(Callee->use_back()))
@ -110,7 +124,12 @@ bool Inliner::runOnSCC(const std::vector<CallGraphNode*> &SCC) {
if (I != SCCFunctions.end()) // Remove function from this SCC.
SCCFunctions.erase(I);
Callee->getParent()->getFunctionList().erase(Callee);
// Remove any call graph edges from the callee to its callees.
while (CalleeNode->begin() != CalleeNode->end())
CalleeNode->removeCallEdgeTo(*(CalleeNode->end()-1));
// Removing the node for callee from the call graph and delete it.
delete CG.removeFunctionFromModule(CalleeNode);
++NumDeleted;
}
Changed = true;