"The implementation is based on what LLVM AMD target expect.
The compiler provided an id link to argument desc and format used.
The runtime need to store them to be able to parse the buffer filled by
the device during the kernel execution, ie, an id value to find the
format and followed by the arguments values"
v2: airlied
Split out the core code to a separate patch, add support for the
different global buffer formats, and move the LLVM specific code
as much as possible to the backend.
v3: handle strings differences better
llvm backend stores strings to the printf buffer
nir backend stores them to a sideband storage in NIR and stores
an index in the buffer.
v4: move specifier parsing to util code.
v5: rename buffer fmt + make printf code work
v6: handle args/specifier number mismatch support
v7: move to single string + struct
v8: use "%s" to print strings to avoid bad specifier, fix str
calcs.
v9: move to the same global buffer format as llvm, just strings
are different now. This requires changes to nir lowering.
buffer format:
[0] contains offset into buffer at start contains 8
[1] contains length of buffer
v10: printf const clean, add warning, endian assert, print %%
at end, fix specifiers to vector
v11: minor cleanups, make sure the format string never contains
an n.
v12: validate format string
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8254>
Karol Herbst