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# 8df54a6a 19-Jun-2022 Jacques Pienaar <[email protected]>

[mlir] Update accessors to prefixed form (NFC)

Follow up from flipping dialects to both, flip accessor used to prefixed
variant ahead to flipping from _Both to _Prefixed. This just flips to
the acce

[mlir] Update accessors to prefixed form (NFC)

Follow up from flipping dialects to both, flip accessor used to prefixed
variant ahead to flipping from _Both to _Prefixed. This just flips to
the accessors introduced in the preceding change which are just prefixed
forms of the existing accessor changed from.

Mechanical change using helper script
https://github.com/jpienaar/llvm-project/blob/main/clang-tools-extra/clang-tidy/misc/AddGetterCheck.cpp and clang-format.

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Revision tags: llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1
# f1f05a91 30-Mar-2022 Krzysztof Drewniak <[email protected]>

[MLIR][AMDGPU] Add AMDGPU dialect, wrappers around raw buffer intrinsics

By analogy with the NVGPU dialect, introduce an AMDGPU dialect for
AMD-specific intrinsic wrappers.

The dialect initially in

[MLIR][AMDGPU] Add AMDGPU dialect, wrappers around raw buffer intrinsics

By analogy with the NVGPU dialect, introduce an AMDGPU dialect for
AMD-specific intrinsic wrappers.

The dialect initially includes wrappers around the raw buffer intrinsics.

On AMD GPUs, a memref can be converted to a "buffer descriptor" that
allows more precise control of memory access, such as by allowing for
out of bounds loads/stores to be replaced by 0/ignored without adding
additional conditional logic, which is important for performance.

The repository currently contains a limited conversion from
transfer_read/transfer_write to Mubuf intrinsics, which are an older,
deprecated intrinsic for the same functionality.

The new amdgpu.raw_buffer_* ops allow these operations to be used
explicitly and for including metadata such as whether the target
chipset is an RDNA chip or not (which impacts the interpretation of
some bits in the buffer descriptor), while still maintaining an
MLIR-like interface.

(This change also exposes the floating-point atomic add intrinsic.)

Reviewed By: ThomasRaoux

Differential Revision: https://reviews.llvm.org/D122765

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