Changeset 11313:0614d64714a8
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arm: Implement store-pair (aarch64) as a single micro-op

Previous implementation cracked store-pair into two micro-ops, which
forbade corresponding load-pair (one micro-op) to benefit from STLF.
This could cause many unecessary stalls and replays of load-pairs.

Note that this only changes regular store-pair. FP store-pairs are still
cracked (and they probably should match the regular store-pair implementation).

FS: Boots linux (3.16)

SE: Runs olden benchmarks