[PATCH] D122699: [HLSL] Add Semantic syntax, and SV_GroupIndex

[Chris Bieneman via Phabricator via cfe-commits]

beanz created this revision.
beanz added reviewers: MaskRay, jdoerfert, kuhar, rnk, aaron.ballman, rsmith.
Herald added subscribers: StephenFan, arphaman, mgorny.
Herald added a project: All.
beanz requested review of this revision.
Herald added a project: clang.

HLSL has a language feature called Semantics which get attached to
declarations like attributes and are used in a variety of ways.

One example of semantic use is here with the `SV_GroupIndex` semantic
which, when applied to an input for a compute shader is pre-populated
by the driver with a flattened thread index.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122699

Files:
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/AttrDocs.td
  clang/include/clang/Basic/AttributeCommonInfo.h
  clang/include/clang/Basic/Attributes.h
  clang/include/clang/Parse/Parser.h
  clang/lib/Parse/CMakeLists.txt
  clang/lib/Parse/ParseDecl.cpp
  clang/lib/Parse/ParseHLSL.cpp
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/test/SemaHLSL/Semantics/entry_parameter.hlsl
  clang/utils/TableGen/ClangAttrEmitter.cpp

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