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Re: [patch] PR53245


On Mon, May 7, 2012 at 4:35 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
> Hello,
>
> This patch fixes PR53245.
> Bootstrapped&tested on powerpc64-unknown-linux-gnu. OK for trunk?

Ok.

Thanks,
Richard.

> Ciao!
> Steven
>
>
> ? ? ? ?PR middle-end/53245
> ? ? ? ?* gimplify.c (preprocess_case_label_vec_for_gimple): If low or high
> ? ? ? ?is folded to a type boundary value, verify that the resulting case
> ? ? ? ?label is still a care range.
>
> Index: gimplify.c
> ===================================================================
> --- gimplify.c ?(revision 187219)
> +++ gimplify.c ?(working copy)
> @@ -1658,6 +1658,10 @@ preprocess_case_label_vec_for_gimple (VEC(tree,hea
> ? ? ? ? ? ? ? ? ? ? ?&& tree_int_cst_compare (high, max_value) > 0)
> ? ? ? ? ? ? ? ? ? ?high = max_value;
> ? ? ? ? ? ? ? ? ?high = fold_convert (index_type, high);
> +
> + ? ? ? ? ? ? ? ? /* We may have folded a case range to a one-value case. ?*/
> + ? ? ? ? ? ? ? ? if (tree_int_cst_equal (low, high))
> + ? ? ? ? ? ? ? ? ? high = NULL_TREE;
> ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ?}


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