Now committed, taking Andrew's comments into account:
https://gcc.gnu.org/gcc-12/changes.html#amdgcn
Tobias
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commit 4b4a85b696b3bb6700eea8f687bc45f1fd0b1f8c
Author: Tobias Burnus <tob...@codesourcery.com>
Date: Wed Feb 2 18:51:32 2022 +0100
gcc-12/changes.html (GCN): >1 workers per gang
diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index 479bd6c5..b6341fda 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -360,6 +360,11 @@ a work-in-progress.</p>
<li>Debug experience with ROCGDB has been improved.</li>
<li>Support for the type <code>__int128_t</code>/<code>integer(kind=16)</code>
was added.</li>
+ <li>For offloading, the limitation of using only one wavefront per compute
+ unit (CU) has been lifted. Up to 40 workgroups per CU and 16 wavefronts
+ per workgroup are supported (up to a limit of 40 wavefronts in total,
+ per CU). Additionally, the number of used wavefronts and workgroups was
+ tuned for performance.</li>
</ul>
<!-- <h3 id="arc">ARC</h3> -->
