Matt Arsenault 30dd1297fa AMDGPU: Custom expand flat cmpxchg which may access private (#109410) ...

64-bit flat cmpxchg instructions do not work correctly for scratch
addresses, and need to be expanded as non-atomic.

Allow custom expansion of cmpxchg in AtomicExpand, as is
already the case for atomicrmw.

2024-11-04 09:29:38 -08:00

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