[patch] Update vectorizer documentation

[Richard Guenther]

On Wed, Dec 2, 2009 at 2:16 PM, Ira Rosen <IRAR@il.ibm.com> wrote:
>
> Hi,
>
> This patch adds basic block SLP flags documentation and updates vectorizer
> verbosity levels documentation.
>
> OK for trunk?

Ok.

Thanks,
Richard.

> Thanks,
> Ira
>
>
> ChangeLog:
>
>      * doc/invoke.texi (-fdump-tree-slp): Document.
>      (-ftree-vectorizer-verbose): Update.
>      (-ftree-slp-vectorize): Document.
>
> Index: doc/invoke.texi
> ===================================================================
> --- doc/invoke.texi     (revision 154906)
> +++ doc/invoke.texi     (working copy)
> @@ -5360,6 +5360,11 @@ file name.
>  Dump each function after applying vectorization of loops.  The file name
> is
>  made by appending @file{.vect} to the source file name.
>
> +@item slp
> +@opindex fdump-tree-slp
> +Dump each function after applying vectorization of basic blocks.  The file
> name
> +is made by appending @file{.slp} to the source file name.
> +
>  @item vrp
>  @opindex fdump-tree-vrp
>  Dump each function after Value Range Propagation (VRP).  The file name
> @@ -5385,14 +5390,16 @@ inner-most, single-bb, single-entry/exit
>  level that @option{-fdump-tree-vect-stats} uses.
>  Higher verbosity levels mean either more information dumped for each
>  reported loop, or same amount of information reported for more loops:
> -If @var{n}=3, alignment related information is added to the reports.
> -If @var{n}=4, data-references related information (e.g.@: memory
> dependences,
> +if @var{n}=3, vectorizer cost model information is reported.
> +If @var{n}=4, alignment related information is added to the reports.
> +If @var{n}=5, data-references related information (e.g.@: memory
> dependences,
>  memory access-patterns) is added to the reports.
> -If @var{n}=5, the vectorizer reports also non-vectorized inner-most loops
> +If @var{n}=6, the vectorizer reports also non-vectorized inner-most loops
>  that did not pass the first analysis phase (i.e., may not be countable, or
>  may have complicated control-flow).
> -If @var{n}=6, the vectorizer reports also non-vectorized nested loops.
> -For @var{n}=7, all the information the vectorizer generates during its
> +If @var{n}=7, the vectorizer reports also non-vectorized nested loops.
> +If @var{n}=8, SLP related information is added to the reports.
> +For @var{n}=9, all the information the vectorizer generates during its
>  analysis and transformation is reported.  This is the same verbosity level
>  that @option{-fdump-tree-vect-details} uses.
>
> @@ -6818,6 +6825,11 @@ enabled by default at @option{-O} and hi
>  Perform loop vectorization on trees. This flag is enabled by default at
>  @option{-O3}.
>
> +@item -ftree-slp-vectorize
> +@opindex ftree-slp-vectorize
> +Perform basic block vectorization on trees. This flag is enabled by
> default at
> +@option{-O3} and when @option{-ftree-vectorize} is enabled.
> +
>  @item -ftree-vect-loop-version
>  @opindex ftree-vect-loop-version
>  Perform loop versioning when doing loop vectorization on trees.  When a
> loop
>
>