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authorAndrew Pinski <quic_apinski@quicinc.com>2024-06-12 15:53:35 -0700
committerAndreas K. Hüttel <dilfridge@gentoo.org>2024-06-30 13:46:33 +0200
commit4dc83cac78a92a99cdd1ae808890083461597b82 (patch)
treebe643ae0ee9f98518d8b6ea39980375b1a1e34cf /iconvdata/testdata/ISO-2022-CN..UTF8
parent4228baef1a94e8bde84ad74f2e0358120a2bcac7 (diff)
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Aarch64: Add memcpy for qualcomm's oryon-1 core
Qualcomm's new core (oryon-1) has a different performance characteristic
than other cores. For memcpy, it is faster to use the GPRs to
do the copy for large sizes (2x faster). For even larger sizes,
it is better to use the nontemporal load/store instructions so
we don't pollute the L1/L2 caches.

For smaller sizes, the characteristic are very similar to
other cores.
I used the thunderx memcpy as a starting point and expanded from there.

Changes since v1:
* v2: Fix ordering in Makefile.
* v3: Fix comment grammar about the ldnp/stnp instructions.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
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