[PATCH] doc: mention -mprefer-vector-width in target attrs

[Martin Liška]

On 2/3/21 4:34 PM, Marek Polacek wrote:
> On Wed, Feb 03, 2021 at 04:15:24PM +0100, Martin Liška wrote:
>> The patch documents -mprefer-vector-width which is a valid target attribute/pragma.
> 
>> diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
>> index 8daa1c67974..a14875cec37 100644
>> --- a/gcc/doc/extend.texi
>> +++ b/gcc/doc/extend.texi
>> @@ -7020,6 +7020,28 @@ On x86 targets, the @code{fentry_section} attribute sets the name
>>   of the section to record function entry instrumentation calls in when
>>   enabled with @option{-pg -mrecord-mcount}
>> +@item prefer-vector-width=@var{OPT}
>> +@cindex @code{prefer-vector-width} function attribute, x86
>> +On x86 targets, the @code{prefer-vector-width} attribute inform the
> 
> "informs"
> 
>> +compiler to use @var{OPT}-bit vector width in instructions
>> +instead of default on the selected platform.
> 
> "the default"
> 
> Marek
> 

Thanks Marek for the review.

Installed to master.
Martin