[PATCH] D65456: [OpenCL] Add generic type handling for builtin functions

[Sven van Haastregt via Phabricator via cfe-commits]

svenvh created this revision.
svenvh added a reviewer: Anastasia.
Herald added subscribers: cfe-commits, kristina, yaxunl.
Herald added a reviewer: rengolin.
Herald added a project: clang.

Generic types are an abstraction of type sets.  It mimics the way
functions are defined in the OpenCL specification.  For example,
floatN can abstract all the vector sizes of the float type.

This allows to

- stick more closely to the specification, which uses generic types;
- factorize definitions of functions with numerous prototypes in the tablegen file; and
- reduce the memory impact of functions with many overloads.

Patch by Pierre Gondois and Sven van Haastregt.

Continuation of https://reviews.llvm.org/D63434


Repository:
  rC Clang

https://reviews.llvm.org/D65456

Files:
  clang/lib/Sema/OpenCLBuiltins.td
  clang/lib/Sema/SemaLookup.cpp
  clang/test/SemaOpenCL/fdeclare-opencl-builtins.cl
  clang/utils/TableGen/ClangOpenCLBuiltinEmitter.cpp

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