| commit | 016e1eb9c86923bf6a9669697f6be8309d12b78c | [log] [tgz] |
|---|---|---|
| author | Fabian Mora <fmora.dev@gmail.com> | Tue Aug 27 18:44:50 2024 -0400 |
| committer | GitHub <noreply@github.com> | Tue Aug 27 18:44:50 2024 -0400 |
| tree | 80014a0ad0d85cad1049e07c667c3e650bca6ee0 | |
| parent | de687eac24a3f4bac8b5ff9975f51ab98775f2d5 [diff] |
[mlir][gpu] Add metadata attributes for storing kernel metadata in GPU objects (#95292)
This patch adds the `#gpu.kernel_metadata` and `#gpu.kernel_table`
attributes. The `#gpu.kernel_metadata` attribute allows storing metadata
related to a compiled kernel, for example, the number of scalar
registers used by the kernel. The attribute only has 2 required
parameters, the name and function type. It also has 2 optional
parameters, the arguments attributes and generic dictionary for storing
all other metadata.
The `#gpu.kernel_table` stores a table of `#gpu.kernel_metadata`,
mapping the name of the kernel to the metadata.
Finally, the function `ROCDL::getAMDHSAKernelsELFMetadata` was added to
collect ELF metadata from a binary, and to test the class methods in
both attributes.
Example:
```mlir
gpu.binary @binary [#gpu.object<#rocdl.target<chip = "gfx900">, kernels = #gpu.kernel_table<[
#gpu.kernel_metadata<"kernel0", (i32) -> (), metadata = {sgpr_count = 255}>,
#gpu.kernel_metadata<"kernel1", (i32, f32) -> (), arg_attrs = [{llvm.read_only}, {}]>
]> , bin = "BLOB">]
```
The motivation behind these attributes is to provide useful information
for things like tunning.
---------
Co-authored-by: Mehdi Amini <joker.eph@gmail.com>
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