Matt Arsenault a61c3455c0 AtomicExpand: Use llvm.ptrmask instead of ptrtoint ...

This removes the ptrtoint from the load's pointer operand, although we
can't entirely eliminate these to get the LSB shift. In a future
patch, this will avoid ptrtoint in the case where the atomic is
overaligned to the word size.

2022-09-28 12:51:30 -04:00

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