}
Changed |= LocalChange; // Remember that we changed something.
} while (LocalChange);
-
+
return Changed;
}
NF_CGN->stealCalledFunctionsFrom(CG[F]);
- // Now that the old function is dead, delete it.
- delete CG.removeFunctionFromModule(F);
+ // Now that the old function is dead, delete it. If there is a dangling
+ // reference to the CallgraphNode, just leave the dead function around for
+ // someone else to nuke.
+ CallGraphNode *CGN = CG[F];
+ if (CGN->getNumReferences() == 0)
+ delete CG.removeFunctionFromModule(CGN);
+ else
+ F->setLinkage(Function::ExternalLinkage);
return NF_CGN;
}
--- /dev/null
+; rdar://7879828
+; RUN: opt -inline -argpromotion %s
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.0.0"
+
+define void @foo() {
+ invoke void @foo2()
+ to label %if.end432 unwind label %for.end520
+
+if.end432:
+ unreachable
+
+for.end520:
+ unreachable
+}
+
+define internal void @foo2() ssp {
+ %call7 = call fastcc i8* @foo3(i1 (i8*)* @foo4)
+ %call58 = call fastcc i8* @foo3(i1 (i8*)* @foo5)
+ unreachable
+}
+
+define internal fastcc i8* @foo3(i1 (i8*)* %Pred) {
+entry:
+ unreachable
+}
+
+define internal i1 @foo4(i8* %O) nounwind {
+entry:
+ %call = call zeroext i1 @foo5(i8* %O) ; <i1> [#uses=0]
+ unreachable
+}
+
+define internal i1 @foo5(i8* %O) nounwind {
+entry:
+ ret i1 undef
+}
+