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5c31eeeddb
## Motivation
CK Tile is required to support certain older OSs; on these OSs, cpp 20
is not fully supported. For ROCm 7.2, compiler errors occur on one of
these older OSs. An example of this error is as follows:
```bash
/composable_kernel/include/ck_tile/core/arch/mma/amdgcn_mma.hpp:34:28: error: expected concept name with optional arguments
34 | { MmaOp::kAMBlock } -> std::convertible_to<unsigned int>;
|
```
The goal of this PR is to resolve these compiler errors.
## Technical Details
The existing guards around the mma concepts only check if the concepts
language feature is supported, as follows:
```cpp
#if defined(__cpp_concepts) && __cpp_concepts >= 201907L
// ...
template <typename CtrlFlags>
concept CtrlFlagsGfx9I = requires(CtrlFlags ctrlFlags) {
// Flag members for Gfx9 MFMA instructions
{ CtrlFlags::Cbsz } -> std::convertible_to<int>;
{ CtrlFlags::Abid } -> std::convertible_to<int>;
{ CtrlFlags::Blgp } -> std::convertible_to<int>;
};
#endif // defined(__cpp_concepts) && __cpp_concepts >= 201907L
```
That said, in cases where functionality from the `<concepts>` header is
used (e.g., `std::convertible_to`), this guard fails to check whether
the `<concepts>` header is available.
This change adds an additional check to the concepts that make use of
functionality from the `<concepts>` header to ensure the header is
available.
## Test Plan
I tested the changes on the relevant docker for gfx90a, gfx950, and
gfx942 and the compiler issue is not present.
## Submission Checklist
- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.