mirror of
https://github.com/intel/isa-l.git
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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>
197 lines
8.3 KiB
C
197 lines
8.3 KiB
C
########################################################################
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# Copyright(c) 2019 Arm Corporation All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Arm Corporation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#########################################################################
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.equ p4_low_b0, 0xb4fb
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.equ p4_low_b1, 0x6d9a
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.equ p4_low_b2, 0xefb1
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.equ p4_low_b3, 0xaf86
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.equ p4_high_b0, 0x14e4
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.equ p4_high_b1, 0x34f0
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.equ p4_high_b2, 0x84a6
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.equ p4_high_b3, 0xf497
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.equ p1_low_b0, 0xa32c
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.equ p1_low_b1, 0x505d
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.equ p1_low_b2, 0xbe7d
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.equ p1_low_b3, 0xd9d7
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.equ p1_high_b0, 0x4444
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.equ p1_high_b1, 0xc96f
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.equ p1_high_b2, 0x0015
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.equ p1_high_b3, 0x381d
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.equ p0_low_b0, 0x4444
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.equ p0_low_b1, 0xc96f
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.equ p0_low_b2, 0x0015
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.equ p0_low_b3, 0x381d
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.equ br_low_b0, 0x9f77
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.equ br_low_b1, 0x9aef
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.equ br_low_b2, 0xfa32
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.equ br_low_b3, 0x3e6c
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.equ br_high_b0, 0x936b
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.equ br_high_b1, 0x5897
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.equ br_high_b2, 0x2653
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.equ br_high_b3, 0x2b59
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.text
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.section .rodata
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.align 4
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.set .lanchor_crc_tab,. + 0
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.type crc64_tab, %object
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.size crc64_tab, 2048
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crc64_tab:
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.xword 0x0000000000000000, 0x7ad870c830358979
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.xword 0xf5b0e190606b12f2, 0x8f689158505e9b8b
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.xword 0xc038e5739841b68f, 0xbae095bba8743ff6
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.xword 0x358804e3f82aa47d, 0x4f50742bc81f2d04
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.xword 0xab28ecb46814fe75, 0xd1f09c7c5821770c
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.xword 0x5e980d24087fec87, 0x24407dec384a65fe
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.xword 0x6b1009c7f05548fa, 0x11c8790fc060c183
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.xword 0x9ea0e857903e5a08, 0xe478989fa00bd371
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.xword 0x7d08ff3b88be6f81, 0x07d08ff3b88be6f8
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.xword 0x88b81eabe8d57d73, 0xf2606e63d8e0f40a
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.xword 0xbd301a4810ffd90e, 0xc7e86a8020ca5077
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.xword 0x4880fbd87094cbfc, 0x32588b1040a14285
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.xword 0xd620138fe0aa91f4, 0xacf86347d09f188d
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.xword 0x2390f21f80c18306, 0x594882d7b0f40a7f
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.xword 0x1618f6fc78eb277b, 0x6cc0863448deae02
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.xword 0xe3a8176c18803589, 0x997067a428b5bcf0
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.xword 0xfa11fe77117cdf02, 0x80c98ebf2149567b
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.xword 0x0fa11fe77117cdf0, 0x75796f2f41224489
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.xword 0x3a291b04893d698d, 0x40f16bccb908e0f4
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.xword 0xcf99fa94e9567b7f, 0xb5418a5cd963f206
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.xword 0x513912c379682177, 0x2be1620b495da80e
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.xword 0xa489f35319033385, 0xde51839b2936bafc
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.xword 0x9101f7b0e12997f8, 0xebd98778d11c1e81
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.xword 0x64b116208142850a, 0x1e6966e8b1770c73
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.xword 0x8719014c99c2b083, 0xfdc17184a9f739fa
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.xword 0x72a9e0dcf9a9a271, 0x08719014c99c2b08
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.xword 0x4721e43f0183060c, 0x3df994f731b68f75
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.xword 0xb29105af61e814fe, 0xc849756751dd9d87
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.xword 0x2c31edf8f1d64ef6, 0x56e99d30c1e3c78f
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.xword 0xd9810c6891bd5c04, 0xa3597ca0a188d57d
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.xword 0xec09088b6997f879, 0x96d1784359a27100
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.xword 0x19b9e91b09fcea8b, 0x636199d339c963f2
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.xword 0xdf7adabd7a6e2d6f, 0xa5a2aa754a5ba416
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.xword 0x2aca3b2d1a053f9d, 0x50124be52a30b6e4
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.xword 0x1f423fcee22f9be0, 0x659a4f06d21a1299
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.xword 0xeaf2de5e82448912, 0x902aae96b271006b
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.xword 0x74523609127ad31a, 0x0e8a46c1224f5a63
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.xword 0x81e2d7997211c1e8, 0xfb3aa75142244891
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.xword 0xb46ad37a8a3b6595, 0xceb2a3b2ba0eecec
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.xword 0x41da32eaea507767, 0x3b024222da65fe1e
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.xword 0xa2722586f2d042ee, 0xd8aa554ec2e5cb97
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.xword 0x57c2c41692bb501c, 0x2d1ab4dea28ed965
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.xword 0x624ac0f56a91f461, 0x1892b03d5aa47d18
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.xword 0x97fa21650afae693, 0xed2251ad3acf6fea
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.xword 0x095ac9329ac4bc9b, 0x7382b9faaaf135e2
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.xword 0xfcea28a2faafae69, 0x8632586aca9a2710
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.xword 0xc9622c4102850a14, 0xb3ba5c8932b0836d
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.xword 0x3cd2cdd162ee18e6, 0x460abd1952db919f
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.xword 0x256b24ca6b12f26d, 0x5fb354025b277b14
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.xword 0xd0dbc55a0b79e09f, 0xaa03b5923b4c69e6
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.xword 0xe553c1b9f35344e2, 0x9f8bb171c366cd9b
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.xword 0x10e3202993385610, 0x6a3b50e1a30ddf69
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.xword 0x8e43c87e03060c18, 0xf49bb8b633338561
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.xword 0x7bf329ee636d1eea, 0x012b592653589793
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.xword 0x4e7b2d0d9b47ba97, 0x34a35dc5ab7233ee
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.xword 0xbbcbcc9dfb2ca865, 0xc113bc55cb19211c
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.xword 0x5863dbf1e3ac9dec, 0x22bbab39d3991495
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.xword 0xadd33a6183c78f1e, 0xd70b4aa9b3f20667
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.xword 0x985b3e827bed2b63, 0xe2834e4a4bd8a21a
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.xword 0x6debdf121b863991, 0x1733afda2bb3b0e8
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.xword 0xf34b37458bb86399, 0x8993478dbb8deae0
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.xword 0x06fbd6d5ebd3716b, 0x7c23a61ddbe6f812
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.xword 0x3373d23613f9d516, 0x49aba2fe23cc5c6f
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.xword 0xc6c333a67392c7e4, 0xbc1b436e43a74e9d
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.xword 0x95ac9329ac4bc9b5, 0xef74e3e19c7e40cc
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.xword 0x601c72b9cc20db47, 0x1ac40271fc15523e
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.xword 0x5594765a340a7f3a, 0x2f4c0692043ff643
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.xword 0xa02497ca54616dc8, 0xdafce7026454e4b1
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.xword 0x3e847f9dc45f37c0, 0x445c0f55f46abeb9
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.xword 0xcb349e0da4342532, 0xb1eceec59401ac4b
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.xword 0xfebc9aee5c1e814f, 0x8464ea266c2b0836
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.xword 0x0b0c7b7e3c7593bd, 0x71d40bb60c401ac4
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.xword 0xe8a46c1224f5a634, 0x927c1cda14c02f4d
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.xword 0x1d148d82449eb4c6, 0x67ccfd4a74ab3dbf
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.xword 0x289c8961bcb410bb, 0x5244f9a98c8199c2
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.xword 0xdd2c68f1dcdf0249, 0xa7f41839ecea8b30
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.xword 0x438c80a64ce15841, 0x3954f06e7cd4d138
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.xword 0xb63c61362c8a4ab3, 0xcce411fe1cbfc3ca
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.xword 0x83b465d5d4a0eece, 0xf96c151de49567b7
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.xword 0x76048445b4cbfc3c, 0x0cdcf48d84fe7545
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.xword 0x6fbd6d5ebd3716b7, 0x15651d968d029fce
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.xword 0x9a0d8ccedd5c0445, 0xe0d5fc06ed698d3c
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.xword 0xaf85882d2576a038, 0xd55df8e515432941
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.xword 0x5a3569bd451db2ca, 0x20ed197575283bb3
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.xword 0xc49581ead523e8c2, 0xbe4df122e51661bb
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.xword 0x3125607ab548fa30, 0x4bfd10b2857d7349
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.xword 0x04ad64994d625e4d, 0x7e7514517d57d734
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.xword 0xf11d85092d094cbf, 0x8bc5f5c11d3cc5c6
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.xword 0x12b5926535897936, 0x686de2ad05bcf04f
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.xword 0xe70573f555e26bc4, 0x9ddd033d65d7e2bd
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.xword 0xd28d7716adc8cfb9, 0xa85507de9dfd46c0
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.xword 0x273d9686cda3dd4b, 0x5de5e64efd965432
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.xword 0xb99d7ed15d9d8743, 0xc3450e196da80e3a
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.xword 0x4c2d9f413df695b1, 0x36f5ef890dc31cc8
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.xword 0x79a59ba2c5dc31cc, 0x037deb6af5e9b8b5
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.xword 0x8c157a32a5b7233e, 0xf6cd0afa9582aa47
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.xword 0x4ad64994d625e4da, 0x300e395ce6106da3
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.xword 0xbf66a804b64ef628, 0xc5bed8cc867b7f51
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.xword 0x8aeeace74e645255, 0xf036dc2f7e51db2c
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.xword 0x7f5e4d772e0f40a7, 0x05863dbf1e3ac9de
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.xword 0xe1fea520be311aaf, 0x9b26d5e88e0493d6
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.xword 0x144e44b0de5a085d, 0x6e963478ee6f8124
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.xword 0x21c640532670ac20, 0x5b1e309b16452559
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.xword 0xd476a1c3461bbed2, 0xaeaed10b762e37ab
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.xword 0x37deb6af5e9b8b5b, 0x4d06c6676eae0222
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.xword 0xc26e573f3ef099a9, 0xb8b627f70ec510d0
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.xword 0xf7e653dcc6da3dd4, 0x8d3e2314f6efb4ad
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.xword 0x0256b24ca6b12f26, 0x788ec2849684a65f
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.xword 0x9cf65a1b368f752e, 0xe62e2ad306bafc57
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.xword 0x6946bb8b56e467dc, 0x139ecb4366d1eea5
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.xword 0x5ccebf68aecec3a1, 0x2616cfa09efb4ad8
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.xword 0xa97e5ef8cea5d153, 0xd3a62e30fe90582a
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.xword 0xb0c7b7e3c7593bd8, 0xca1fc72bf76cb2a1
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.xword 0x45775673a732292a, 0x3faf26bb9707a053
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.xword 0x70ff52905f188d57, 0x0a2722586f2d042e
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.xword 0x854fb3003f739fa5, 0xff97c3c80f4616dc
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.xword 0x1bef5b57af4dc5ad, 0x61372b9f9f784cd4
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.xword 0xee5fbac7cf26d75f, 0x9487ca0fff135e26
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.xword 0xdbd7be24370c7322, 0xa10fceec0739fa5b
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.xword 0x2e675fb4576761d0, 0x54bf2f7c6752e8a9
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.xword 0xcdcf48d84fe75459, 0xb71738107fd2dd20
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.xword 0x387fa9482f8c46ab, 0x42a7d9801fb9cfd2
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.xword 0x0df7adabd7a6e2d6, 0x772fdd63e7936baf
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.xword 0xf8474c3bb7cdf024, 0x829f3cf387f8795d
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.xword 0x66e7a46c27f3aa2c, 0x1c3fd4a417c62355
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.xword 0x935745fc4798b8de, 0xe98f353477ad31a7
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.xword 0xa6df411fbfb21ca3, 0xdc0731d78f8795da
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.xword 0x536fa08fdfd90e51, 0x29b7d047efec8728
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