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Re: [patch 7/8 tree-optimization]: Bitwise not logic for fold_unary_loc.
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Kai Tietz <ktietz70 at googlemail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 13 Jul 2011 12:31:11 +0200
- Subject: Re: [patch 7/8 tree-optimization]: Bitwise not logic for fold_unary_loc.
- References: <CAEwic4YvxPwFujYeM_FejsaEUCgMH+48p5iLLDqH2D9hGOTvHQ@mail.gmail.com>
On Wed, Jul 13, 2011 at 9:36 AM, Kai Tietz <ktietz70@googlemail.com> wrote:
> Hello,
>
> This patch adds support to fold_unary_loc for one-bit precision
> typed bitwise-not expression.
Similar ...
> ChangeLog
>
> 2011-07-13 ?Kai Tietz ?<ktietz@redhat.com>
>
> ? ? ? ?* fold-const.c (fold_unary_loc): Add
> ? ? ? ?support for one-bit bitwise-not optimizeation.
>
> Bootstrapped and regression tested with prior patches of this series
> for x86_64-pc-linux-gnu.
> Ok for apply?
>
> Regards,
> Kai
>
> Index: gcc/gcc/fold-const.c
> ===================================================================
> --- gcc.orig/gcc/fold-const.c ? 2011-07-13 08:49:50.000000000 +0200
> +++ gcc/gcc/fold-const.c ? ? ? ?2011-07-13 08:56:45.170171300 +0200
> @@ -8094,6 +8094,12 @@ fold_unary_loc (location_t loc, enum tre
> ? ? ? ? ?if (i == count)
> ? ? ? ? ? ?return build_vector (type, nreverse (list));
> ? ? ? ?}
> + ? ? ?if (INTEGRAL_TYPE_P (type) && TYPE_PRECISION (type) == 1)
> + ? ? ? ?{
> + ? ? ? ? tem = fold_truth_not_expr (loc, arg0);
> + ? ? ? ? if (tem)
> + ? ? ? ? ? return fold_convert_loc (loc, type, tem);
> + ? ? ? }
>
> ? ? ? return NULL_TREE;
>