// Extract the exception object from the ResumeInst and add it to the PHI node
// that feeds the _Unwind_Resume call.
+ BasicBlock *UnwindBBDom = Resumes[0]->getParent();
for (SmallVectorImpl<ResumeInst*>::iterator
I = Resumes.begin(), E = Resumes.end(); I != E; ++I) {
ResumeInst *RI = *I;
ExtractValueInst *ExnObj = ExtractValueInst::Create(RI->getOperand(0),
0, "exn.obj", RI);
PN->addIncoming(ExnObj, RI->getParent());
+ UnwindBBDom = DT->findNearestCommonDominator(RI->getParent(), UnwindBBDom);
RI->eraseFromParent();
}
// We never expect _Unwind_Resume to return.
new UnreachableInst(Ctx, UnwindBB);
+
+ // Now update DominatorTree analysis information.
+ DT->addNewBlock(UnwindBB, UnwindBBDom);
return true;
}