[PowerPC][AIX] Enable quadword atomics by default for AIX
authorKai Luo <lkail@cn.ibm.com>
Tue, 25 Jul 2023 00:08:53 +0000 (08:08 +0800)
committerKai Luo <lkail@cn.ibm.com>
Tue, 25 Jul 2023 00:21:07 +0000 (08:21 +0800)
commitf26af16e2c0df7a76fbee80514fa03c2ffdf83c2
treecc575f69c9780dcf738e178f64ab58ca6a9bbac7
parente3374c8c31fb54a2c8df6c906884e14f1c8a2209
[PowerPC][AIX] Enable quadword atomics by default for AIX

On AIX, a libatomic supporting inline quadword atomic operations has been released, so that compatibility is not an issue now, we can enable quadword atomics by default.

Reviewed By: #powerpc, nemanjai

Differential Revision: https://reviews.llvm.org/D151312
llvm/docs/ReleaseNotes.rst
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
llvm/test/CodeGen/PowerPC/atomics-i128-ldst.ll
llvm/test/CodeGen/PowerPC/atomics-i128.ll
llvm/test/Transforms/AtomicExpand/PowerPC/cmpxchg.ll