Re: [PATCH] middle-end: Fix unexpected warnings for RISC-V port.

[Richard Biener <rguenther@suse.de>]

On Tue, 23 Aug 2022, juzhe.zhong@rivai.ai wrote:

> From: zhongjuzhe <juzhe.zhong@rivai.ai>

OK.

> gcc/ChangeLog:
> 
>         * tree-vect-loop-manip.cc (vect_gen_vector_loop_niters): Simply initialize const_vf to 0.
> 
> ---
>  gcc/tree-vect-loop-manip.cc | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc
> index 86d2264054a..c3a24e6c39a 100644
> --- a/gcc/tree-vect-loop-manip.cc
> +++ b/gcc/tree-vect-loop-manip.cc
> @@ -1977,8 +1977,9 @@ vect_gen_vector_loop_niters (loop_vec_info loop_vinfo, tree niters,
>      }
>    else
>      ni_minus_gap = niters;
> -
> -  unsigned HOST_WIDE_INT const_vf;
> +  
> +  /* To silence some unexpected warnings, simply initialize to 0. */
> +  unsigned HOST_WIDE_INT const_vf = 0;
>    if (vf.is_constant (&const_vf)
>        && !LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo))
>      {
> 

-- 
Richard Biener <rguenther@suse.de>
SUSE Software Solutions Germany GmbH, Frankenstrasse 146, 90461 Nuernberg,
Germany; GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman;
HRB 36809 (AG Nuernberg)