Re: [Patch] GCN update for wwwdocs / libgomp.texi

[Tobias Burnus <tobias@codesourcery.com>]

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Next try – this time with both patches.

On 08.03.23 12:05, Tobias Burnus wrote:
> Hi Andrew,
>
> attached are two patches related to GCN, one for libgomp.texi
> documenting an env var
> and a release-notes update in www docs.
>
> OK? Comments?
>
> Tobias
>
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gcc-13/changes.html: Mention SIMD and updated newlib requirement
diff --git a/htdocs/gcc-13/changes.html b/htdocs/gcc-13/changes.html
index a803f501..e7a342d3 100644
--- a/htdocs/gcc-13/changes.html
+++ b/htdocs/gcc-13/changes.html
@@ -374,6 +374,10 @@ a work-in-progress.</p>
   <li>Support for the Instinct MI200 series devices (<a
       href="https://gcc.gnu.org/onlinedocs/gcc/AMD-GCN-Options.html">
       <code>gfx90a</code></a>) has been added.</li>
+  <li>SIMD vectorization support has been improved; this and stack-handling
+      changes <a
+      href="https://gcc.gnu.org/install/specific.html#amdgcn-x-amdhsa">require</a>
+      newlib 4.3.0 (or newer).</li>
 </ul>
 
 <!-- <h3 id="arc">ARC</h3> -->

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libgomp.texi: Mention GCN_STACK_SIZE in Offload-Target Specifics

libgomp/ChangeLog:

	* libgomp.texi (Offload-Target Specifics): Mention GCN_STACK_SIZE.

diff --git a/libgomp/libgomp.texi b/libgomp/libgomp.texi
index 1b6358db4dc..5bcb84a1d6f 100644
--- a/libgomp/libgomp.texi
+++ b/libgomp/libgomp.texi
@@ -4461,6 +4461,8 @@ The implementation remark:
 @item OpenMP code that has a requires directive with @code{unified_address} or
       @code{unified_shared_memory} will remove any GCN device from the list of
       available devices (``host fallback'').
+@item The available stack size can be changed using the @code{GCN_STACK_SIZE}
+      environment variable; the default is 32 kiB per thread.
 @end itemize