[cfe-dev] [OpenCL] RFC: let Clang generate llvm atomic instructions for OpenCL atomic builtin functions

[Liu, Yaxun (Sam) via cfe-dev]

Hi,

OpenCL atomic builtin functions are similar to llvm atomic instructions. It seems natural to represent OpenCL atomic builtin functions by LLVM atomic instructions.

Doing this can simplify implementation of OpenCL builtin library and have a unified representation for OpenCL atomic builtin functions.

Any feedback? Thanks.

Sam
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