pooja2299 updated this revision to Diff 343919. pooja2299 added a comment. Amended the flat_work_group_size section.
Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D102134/new/ https://reviews.llvm.org/D102134 Files: clang/include/clang/Basic/AttrDocs.td Index: clang/include/clang/Basic/AttrDocs.td =================================================================== --- clang/include/clang/Basic/AttrDocs.td +++ clang/include/clang/Basic/AttrDocs.td @@ -2241,7 +2241,10 @@ Clang supports the ``__attribute__((amdgpu_flat_work_group_size(<min>, <max>)))`` attribute for the AMDGPU target. This attribute may be attached to a kernel function definition -and is an optimization hint. +and is an optimization hint. It is mandatory to use this attribute in some +situations. Because when the attribute is absent, the compiler assumes the +default maximum workgroup size of 256 but currently the workgroup size can legally go +to 1024. ``<min>`` parameter specifies the minimum flat work-group size, and ``<max>`` parameter specifies the maximum flat work-group size (must be greater than
Index: clang/include/clang/Basic/AttrDocs.td =================================================================== --- clang/include/clang/Basic/AttrDocs.td +++ clang/include/clang/Basic/AttrDocs.td @@ -2241,7 +2241,10 @@ Clang supports the ``__attribute__((amdgpu_flat_work_group_size(<min>, <max>)))`` attribute for the AMDGPU target. This attribute may be attached to a kernel function definition -and is an optimization hint. +and is an optimization hint. It is mandatory to use this attribute in some +situations. Because when the attribute is absent, the compiler assumes the +default maximum workgroup size of 256 but currently the workgroup size can legally go +to 1024. ``<min>`` parameter specifies the minimum flat work-group size, and ``<max>`` parameter specifies the maximum flat work-group size (must be greater than
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