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