1; RUN: opt < %s -adce -simplifycfg | llvm-dis 2 3define i32 @Test(i32 %A, i32 %B) { 4BB1: 5 br label %BB4 6 7BB2: ; No predecessors! 8 br label %BB3 9 10BB3: ; preds = %BB4, %BB2 11 %ret = phi i32 [ %X, %BB4 ], [ %B, %BB2 ] ; <i32> [#uses=1] 12 ret i32 %ret 13 14BB4: ; preds = %BB1 15 %X = phi i32 [ %A, %BB1 ] ; <i32> [#uses=1] 16 br label %BB3 17} 18 19 20