The insertion point for the loads is right before the llvm.eh.exception

call. The call may be in the same BB as the landingpad instruction. If that's
the case, then inserting the loads after the landingpad inst, but before the
extractvalues, causes undefined behavior.

llvm-svn: 139088

llvm/lib/VMCore/AutoUpgrade.cpp

@@ -487,7 +487,7 @@ void llvm::UpgradeExceptionHandling(Module *M) {
     std::pair<Value*,Value*> ExnSelSlots = FnToLPadSlotMap[Parent->getParent()];
 
     IRBuilder<> Builder(Context);
-    Builder.SetInsertPoint(Parent, Parent->getFirstInsertionPt());
+    Builder.SetInsertPoint(Parent, Exn);
     LoadInst *LPExn = Builder.CreateLoad(ExnSelSlots.first, "exn.load");
     LoadInst *LPSel = Builder.CreateLoad(ExnSelSlots.second, "sel.load");