Re: [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