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4785428d2f
+ Utilise `pmull2` instruction in main loops of arm64 crc functions and avoid the need for `dup` to align multiplicands. + Use just 1 ASIMD register to hold both 64b p4 constants, appropriately aligned. + Interleave quadword `ldr` with `pmull{2}` to avoid unnecessary stalls on existing LITTLE uarch (which can only issue these instructions every other cycle). + Similarly interleave scalar instructions with ASIMD instructions to increase likelihood of instruction level parallelism on a variety of uarch. + Cut down on needless instructions in non-critical sections to help performance for small buffers. + Extract common instruction sequences into inner macros and moved them into shared header - crc_common_pmull.h + Use the same human readable register aliases and register allocation in all 4 implementations, never refer to registers without using human readable alias. + Use #defines rather than .req to allow use of same names across several implementations + Reduce tail case size from 1024B to 64B + Phrased the `eor` instructions in the main loop to more clearly show that we can rewrite pairs of `eor` instructions with a single `eor3` instruction in the presence of Armv8.2-SHA (should probably be an option in multibinary in future). Change-Id: I3688193ea4ad88b53cf47e5bd9a7fd5c2b4401e1 Signed-off-by: Samuel Lee <samuel.lee@microsoft.com> |
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crc16_t10dif_copy_pmull.S | ||
crc16_t10dif_pmull.S | ||
crc32_gzip_refl_hw_fold.S | ||
crc32_gzip_refl_pmull.h | ||
crc32_gzip_refl_pmull.S | ||
crc32_ieee_norm_pmull.h | ||
crc32_ieee_norm_pmull.S | ||
crc32_iscsi_refl_hw_fold.S | ||
crc32_iscsi_refl_pmull.h | ||
crc32_iscsi_refl_pmull.S | ||
crc32_norm_common_pmull.h | ||
crc32_refl_common_pmull.h | ||
crc64_ecma_norm_pmull.h | ||
crc64_ecma_norm_pmull.S | ||
crc64_ecma_refl_pmull.h | ||
crc64_ecma_refl_pmull.S | ||
crc64_iso_norm_pmull.h | ||
crc64_iso_norm_pmull.S | ||
crc64_iso_refl_pmull.h | ||
crc64_iso_refl_pmull.S | ||
crc64_jones_norm_pmull.h | ||
crc64_jones_norm_pmull.S | ||
crc64_jones_refl_pmull.h | ||
crc64_jones_refl_pmull.S | ||
crc64_norm_common_pmull.h | ||
crc64_refl_common_pmull.h | ||
crc_aarch64_dispatcher.c | ||
crc_common_pmull.h | ||
crc_multibinary_arm.S | ||
Makefile.am |