[PATCH] D42307: [OpenCL][6.0.0 Release] Release notes for OpenCL in Clang

Anastasia Stulova via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Fri Jan 19 10:33:00 PST 2018

Anastasia created this revision.
Anastasia added reviewers: yaxunl, bader, hans.



Index: docs/ReleaseNotes.rst
--- docs/ReleaseNotes.rst
+++ docs/ReleaseNotes.rst
@@ -204,7 +204,46 @@
 OpenCL C Language Changes in Clang
+- Added subgroup builtins to enqueue kernel support.
+- Added CL2.0 atomics as Clang builtins that now accept
+  an additional memory scope parameter propagated to atomic IR instructions
+  (this is to align with the corresponding change in LLVM IR) (see `spec s6.13.11.4
+- Miscellaneous fixes in the CL header.
+- Allow per target selection of address space during CodeGen of certain OpenCL types.
+  Default target implementation is provided mimicking old behavior.
+- Macro ``__IMAGE_SUPPORT__`` is now automatically added (as per `spec s6.10
+- Added ``cl_intel_subgroups`` and ``cl_intel_subgroups_short`` extensions.
+- All function calls are marked by the convergent attribute
+  (https://clang.llvm.org/docs/AttributeReference.html#convergent-clang-convergent)
+  to prevent optimizations that break SPMD program semantics. This will be removed
+  by LLVM passes if it can be proved that the function does not use convergent
+  operations.
+- Create a kernel wrapper for enqueued blocks, which simplifies enqueue support by
+  providing common functionality.
+- Added private address space explicitly in AST and refactored address space support
+  with several simplifications and bug fixes (llvm.org/pr33419 and llvm.org/pr33420).
+- OpenCL now allows functions with empty parameters to be treated as if they had a
+  void parameter list (inspired from C++ support). OpenCL C spec update to follow.
+- General miscellaneous refactoring and cleanup of blocks support for OpenCL to
+  remove unused parts inherited from Objective C implementation.
+- Miscellaneous improvements in vector diagnostics.
+- Added half float load and store builtins without enabling half as a legal type
+  (``__builtin_store_half for double``, ``__builtin_store_halff`` for double,
+  ``__builtin_load_half for double``, ``__builtin_load_halff`` for float).
 OpenMP Support in Clang

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