Adrian Tong b6a7ae2c5d Optimize shift and accumulate pattern in AArch64. ...

AArch64 supports unsigned shift right and accumulate. In case we see a
unsigned shift right followed by an OR. We could turn them into a USRA
instruction, given the operands of the OR has no common bits.

Differential Revision: https://reviews.llvm.org/D114405

2022-01-20 01:57:40 +00:00

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