Kai Luo b9c3941cd6 [PowerPC] Generate inlined quadword lock free atomic operations via AtomicExpand ...

This patch uses AtomicExpandPass to implement quadword lock free atomic operations. It adopts the method introduced in https://reviews.llvm.org/D47882, which expand atomic operations post RA to avoid spilling that might prevent LL/SC progress.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D103614

2021-07-15 01:12:09 +00:00

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