[PATCH] D80804: [AMDGPU] Introduce Clang builtins to be mapped to AMDGCN atomic inc/dec intrinsics

Fri May 29 10:53:50 PDT 2020

saiislam added a comment.

In D80804#2063451 <https://reviews.llvm.org/D80804#2063451>, @sameerds wrote:

> Actually, the question really is about why inc/dec are needed as separate operations either as IR intrinsics or Clang builtins. Why not just expose a __builtin_amdgcn_atomicrmw that takes a scope, and map it to the LLVM atomicrmw? That would be way cleaner. The language can provide convenience functions for inc/dec that internally call the rmw builtin.

At the moment, atomic inc/dec exist along with atomicrmw. This patch only aims to devise a way to make it (inc/dec) accessible from the language level.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80804/new/

https://reviews.llvm.org/D80804