testcase for PR3601

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80664 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/Inline/callgraph-update.ll

@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | opt -inline -loop-rotate | llvm-dis
+; PR3601
+declare void @solve()
+
+define internal fastcc void @read() {
+	br label %bb4
+
+bb3:
+	br label %bb4
+
+bb4:
+	call void @solve()
+	br i1 false, label %bb5, label %bb3
+
+bb5:
+	unreachable
+}
+
+define internal fastcc void @parse() {
+	call fastcc void @read()
+	ret void
+}
+
+define void @main() {
+	invoke fastcc void @parse()
+			to label %invcont unwind label %lpad
+
+invcont:
+	unreachable
+
+lpad:
+	unreachable
+}