1; It is illegal to remove BB1 because it will mess up the PHI node! 2; 3; RUN: opt < %s -adce -S | grep BB1 4 5define i32 @test(i1 %C, i32 %A, i32 %B) { 6; <label>:0 7 br i1 %C, label %BB1, label %BB2 8 9BB1: ; preds = %0 10 br label %BB2 11 12BB2: ; preds = %BB1, %0 13 %R = phi i32 [ %A, %0 ], [ %B, %BB1 ] ; <i32> [#uses=1] 14 ret i32 %R 15} 16 17