Sandra Loosemore:
On 1/19/26 10:11, Tobias Burnus wrote:
The attached patch updates the OpenMP status in the GCC 16
release notes and is long overdue update.
[…]
-Sandra
Thanks Sandra for the suggestions. I have now committed the attached patch.
The current version looks like:
https://gcc.gnu.org/gcc-16/changes.html#openmp
Thanks,
Tobias
commit 147ee6924dc23a4cb55fe74791ff20d9f4684635
Author: Tobias Burnus <[email protected]>
Date: Tue Jan 20 09:08:04 2026 +0100
gcc-16/changes.html: Update OpenMP status
diff --git a/htdocs/gcc-16/changes.html b/htdocs/gcc-16/changes.html
index 052ef205..413f756d 100644
--- a/htdocs/gcc-16/changes.html
+++ b/htdocs/gcc-16/changes.html
@@ -49,6 +49,24 @@ a work-in-progress.</p>
</p>
<ul>
+ <li>The <a href="https://gcc.gnu.org/onlinedocs/libgomp/Memory-allocation.html";>
+ memory allocation</a> support has been enhanced: for allocators with the
+ <code>pinned</code> trait, including <code>ompx_gnu_pinned_mem_alloc</code>,
+ the <a href="https://gcc.gnu.org/onlinedocs/libgomp/nvptx.html";>CUDA
+ API (if available)</a> is used; this improves the performance when accessing
+ this memory on Nvidia GPUs. The newly added <code>ompx_gnu_managed_mem_alloc
+ </code>allocator and the <code>ompx_gnu_managed_mem_space</code> (both GNU
+ extensions) allocate device-accessible memory on the host. Such memory is
+ device accessible even when unified-shared memory is not supported and
+ might have different page-migration behavior than other memory on systems
+ even if all host memory is device accessible.</li>
+ <li>OpenMP 5.0: Limited support for <code>declare mapper</code> has been added
+ for C and C++, only. The <code>uses_allocators</code> clause is now
+ supported, including the OpenMP 5.2 syntax changes and supporting
+ semicolons (OpenMP 6.0); for now, only predefined allocators are supported.
+ <li>OpenMP 5.1: Initial support for the <code>iterator</code> modifier in map
+ clauses and the <code>target update</code> construct has been added for C
+ and C++.</li>
<li>OpenMP 5.2: The <code>begin declare variant</code> directive for C
and C++ is now supported.</li>
<li>OpenMP 6.0: The <a
@@ -56,7 +74,17 @@ a work-in-progress.</p>
<code>omp_target_memset</code></a> and <a
href="https://gcc.gnu.org/onlinedocs/libgomp/omp_005ftarget_005fmemset_005fasync.html";>
<code>omp_target_memset_async</code></a> API routines have been
- added.</li>
+ added. The <code>no_openmp_constructs</code> assumptions clause can now
+ be used.</li>
+ <li>OpenMP Technical Report 14 (TR14): The named <code>omp_default_device</code>
+ constant has been added to denote the default-device number.</li>
+ <li>For OpenMP directives and clauses that have been deprecated in OpenMP 5.0,
+ 5.1, or 5.2, a deprecation warning is shown, hinting at the to-be-used
+ syntax; the warning is on by default and can be silenced using
+ <code>-Wno-deprecated-openmp</code>. Additionally, a deprecation warning is
+ shown when using a deprecated named constant or API routine; this warning
+ can be silenced using <code>-Wno-deprecated-declarations</code>.
+
</ul>
<h3 id="openacc">OpenACC</h3>
@@ -103,7 +131,7 @@ for general information.</p>
<li><a href="https://wg21.link/P3096R12";>P3096R12</a>, Function Parameter
Reflection</li>
<li><a href="https://wg21.link/P3491R3";>P3491R3</a>,
- define_static_</code>{<code>string</code>,<code>object</code>,<code>array</code>}
+ <code>define_static_</code>{<code>string</code>,<code>object</code>,<code>array</code>}
(<a href="https://gcc.gnu.org/PR120783";>PR120783</a>)</li>
<li><a href="https://wg21.link/P3560R2";>P3560R2</a>, Error Handling in
Reflection</li>
