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938c026256
256b wide SVE vectors allow some simplification of truffle. Up to 40% speedup on graviton3. Going from 12500 MB/s to 17000 MB/s onhe microbenchmark. SVE2 also offer this capability for 128b vector with a speedup around 25% compared to normal SVE Add unit tests and benchmark for this wide variant Signed-off-by: Yoan Picchi <yoan.picchi@arm.com>
50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
/*
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* Copyright (c) 2015-2016, Intel Corporation
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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 are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* 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 the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TRUFFLECOMPILE_H
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#define TRUFFLECOMPILE_H
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#include "ue2common.h"
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#include "util/charreach.h"
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namespace ue2 {
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void truffleBuildMasks(const CharReach &cr, u8 *mask1, u8 *mask2);
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CharReach truffle2cr(const u8 *lo_in, const u8 *hi_in);
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/* The wide version uses 5 bits for the Byte index instead of 4.
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* It is to be used when TBL can process the whole 256b mask in one instruction
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*/
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void truffleBuildMasksWide(const CharReach &cr, u8 *mask);
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CharReach truffle2crWide(const u8 *mask);
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}
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#endif /* TRUFFLECOMPILE_H */
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