On 25.05.22 11:18, Andrew Stubbs wrote:
On 24/05/2022 17:44, Tobias Burnus wrote:
On 24.05.22 17:31, Andrew Stubbs wrote:
amdgcn: Add gfx90a support
I've deliberately avoided the MI100 and MI200 names because they're
really not that simple. MI100 is gfx908, but MI150 is gfx906 and MI125
is gfx900.
(The last two were misread – they should be MI50 and MI25.)
The MI100 and MI200 names show up in the documents:
* '"AMD Instinct MI100" Instruction Set Architecture / Reference Guide'
https://developer.amd.com/wp-content/resources/CDNA1_Shader_ISA_14December2020.pdf
* '"AMD Instinct MI200" Instruction Set Architecture / Reference Guide'
https://developer.amd.com/wp-content/resources/CDNA2_Shader_ISA_4February2022.pdf
And to update the gcc-13/changes.html.
I can only see one option?
In one patch, I had two <li> to choose from, in the revised follow-up patch,
which was compile (nothing to choose from).
Updated diffs attached. — OK?
[...] GCN now requires llvm-mc of LLVM 13.0.1 or higher [..]
I'm going to update the Wiki page today. I'm not sure where else it is
currently documented.
I think that's the only place.
Tobias
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GCN: Add gfx908/gfx90a to -march/-mtune in invoke.texi
gcc/
* doc/invoke.texi (AMD GCN Options): Add gfx908/gfx90a.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 12f834ff01d..71098d86313 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -19737,7 +19737,6 @@ Set architecture type or tuning for @var{gpu}. Supported values for @var{gpu}
are
@table @samp
-@opindex fiji
@item fiji
Compile for GCN3 Fiji devices (gfx803).
@@ -19747,6 +19746,12 @@ Compile for GCN5 Vega 10 devices (gfx900).
@item gfx906
Compile for GCN5 Vega 20 devices (gfx906).
+@item gfx908
+Compile for CDNA1 Instinct MI100 series devices (gfx908).
+
+@item gfx90a
+Compile for CDNA2 Instinct MI200 series devices (gfx90a).
+
@end table
@item -msram-ecc=on
gcc-13/changes.html: Add gfx90a to GCN
diff --git a/htdocs/gcc-13/changes.html b/htdocs/gcc-13/changes.html
index cc0e15eb..c2610412 100644
--- a/htdocs/gcc-13/changes.html
+++ b/htdocs/gcc-13/changes.html
@@ -99,6 +99,13 @@ a work-in-progress.</p>
<!-- <h3 id="aarch64">AArch64</h3> -->
+<h3 id="amdgcn">AMD Radeon (GCN)</h3>
+<ul>
+ <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>
+</ul>
+
<!-- <h3 id="arc">ARC</h3> -->
<!-- <h3 id="arm">arm</h3> -->
