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When PruneEH turned an invoke into an ordinary

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call (thus changing the call site) it didn't
inform the callgraph about this.  But the
call site does matter - as shown by the testcase,
the callgraph become invalid after the inliner
ran (with an edge between two functions simply
missing), resulting in wrong deductions by
GlobalsModRef.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55872 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2008-09-06 17:19:29 +00:00
parent 3b217c6f5c
commit fec2c2bf5e
4 changed files with 1463 additions and 1 deletions
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6
lib/Transforms/IPO/PruneEH.cpp
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@ -156,6 +156,9 @@ bool PruneEH::runOnSCC(const std::vector<CallGraphNode *> &SCC) {
// function if we have invokes to non-unwinding functions or code after calls to
// no-return functions.
bool PruneEH::SimplifyFunction(Function *F) {
CallGraph &CG = getAnalysis<CallGraph>();
CallGraphNode *CGN = CG[F];
bool MadeChange = false;
for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
if (InvokeInst *II = dyn_cast<InvokeInst>(BB->getTerminator()))
@ -174,6 +177,9 @@ bool PruneEH::SimplifyFunction(Function *F) {
BasicBlock *UnwindBlock = II->getUnwindDest();
UnwindBlock->removePredecessor(II->getParent());
// Fix up the call graph.
CGN->replaceCallSite(II, Call);
// Insert a branch to the normal destination right before the
// invoke.
BranchInst::Create(II->getNormalDest(), II);