Matt Arsenault 171cf5302f AMDGPU/GlobalISel: Handle flat/global G_ATOMIC_CMPXCHG ...

Custom lower this to a target instruction with the merge operands. I
think it might be better to directly select this and emit a
REG_SEQUENCE, but this would be more work since it would require
splitting the tablegen patterns for these cases from the other
atomics.

2019-10-25 13:11:09 -07:00

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