Shilei Tian 9c1085c7e2 [Clang][OpenMP] Add the support for floating-point variables for specific atomic clauses ...

Currently when using `atomic update` with floating-point variables, if
the operation is add or sub, `cmpxchg`, instead of `atomicrmw` is emitted, as
shown in [1].  In fact, about three years ago, llvm-svn: 351850 added the
support for FP operations. This patch adds the support in OpenMP as well.

[1] https://godbolt.org/z/M7b4ba9na

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D124724

2022-05-03 11:30:54 -04:00

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