================
@@ -520,6 +520,102 @@ Every processor supports every OS ABI (see
:ref:`amdgpu-os`) with the following
=========== =============== ============ ===== =================
=============== =============== ======================
+Generic processors allow execution of a single code objects on any of the
processors that
+it supports. Such code objects may not perform as well as those for the
non-generic processors.
+
+Generic processors are only available on code object V6 and above (see
:ref:`amdgpu-elf-code-object`).
+
+Generic processor code objects are versioned (see
:ref:`amdgpu-elf-header-e_flags-table-v6-onwards`).
+The version number is used by runtimes to determine if a code object can be
run on a specific agent.
----------------
t-tye wrote:
This does not really explain how version is used. What about something like:
The version of non-generic code objects is always set to 0.
For a generic code object, adding a new generic member may require the code
generated for the generic target to be changed so it can continue to execute on
the previous members as well as on the new member. When this happens the
generic code object version number is incremented. Each member of the generic
target has a version when it was introduced. A generic code object can execute
on a specific member if the version of the code object being loaded is >= the
version at which the member was introduced.
https://github.com/llvm/llvm-project/pull/76955
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