forked from OSchip/llvm-project
f1f05a91ca
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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| async.mlir | ||
| commandline.mlir | ||
| nearmiss.mlir | ||
| outputfile.mlir | ||