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+; RUN: opt < %s -jump-threading -S | grep {ret i32 0}
+; PR3138
+
+define i32 @jt() {
+entry:
+ br i1 true, label %bb3, label %bb
+
+bb: ; preds = %entry
+ unreachable
+
+bb3: ; preds = %entry
+ ret i32 0
+}