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 5 define i32 @test(i1 %C, i32 %A, i32 %B) { 6 ; <label>:0 7 br i1 %C, label %BB1, label %BB2 8 9 BB1: ; preds = %0 10 br label %BB2 11 12 BB2: ; preds = %BB1, %0 13 %R = phi i32 [ %A, %0 ], [ %B, %BB1 ] ; <i32> [#uses=1] 14 ret i32 %R 15 } 16 17
