Rishabh Bali fe42e72db2 [CodeGen] Port AtomicExpand to new Pass Manager (#71220) ...

Port the `atomicexpand` pass to the new Pass Manager. 
Fixes #64559

2024-02-25 18:42:22 +05:30

..

atomic-expansion-v7.ll

…

atomic-expansion-v8.ll

…

atomicrmw-fp.ll

…

cmpxchg-weak.ll

…

lit.local.cfg

…