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simplify truffle and provide arch-specific block functions

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This commit is contained in:
Konstantinos Margaritis 2021-10-09 00:36:21 +03:00
parent 623c64142b
commit aea10b8ab0
2 changed files with 100 additions and 72 deletions
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110
src/nfa/truffle_simd.hpp
View File

@ -43,37 +43,18 @@
template <uint16_t S>
static really_inline
SuperVector<S> block(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset, SuperVector<S> chars) {
const SuperVector<S> blockSingleMask(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset, SuperVector<S> chars);
chars.print8("chars");
shuf_mask_lo_highclear.print8("shuf_mask_lo_highclear");
shuf_mask_lo_highset.print8("shuf_mask_lo_highset");
SuperVector<S> highconst = SuperVector<S>::dup_u8(0x80);
highconst.print8("highconst");
SuperVector<S> shuf_mask_hi = SuperVector<S>::dup_u64(0x8040201008040201);
shuf_mask_hi.print8("shuf_mask_hi");
SuperVector<S> shuf1 = shuf_mask_lo_highclear.template pshufb<true>(chars);
shuf1.print8("shuf1");
SuperVector<S> t1 = chars ^ highconst;
t1.print8("t1");
SuperVector<S> shuf2 = shuf_mask_lo_highset.template pshufb<true>(t1);
shuf2.print8("shuf2");
SuperVector<S> t2 = highconst.opandnot(chars.template vshr_64_imm<4>());
t2.print8("t2");
SuperVector<S> shuf3 = shuf_mask_hi.template pshufb<true>(t2);
shuf3.print8("shuf3");
SuperVector<S> res = (shuf1 | shuf2) & shuf3;
res.print8("(shuf1 | shuf2) & shuf3");
return !res.eq(SuperVector<S>::Zeroes());//{(m128)vcgtq_u8((uint8x16_t)tmp.u.v128[0], vdupq_n_u8(0))};
}
#if defined(ARCH_IA32) || defined(ARCH_X86_64)
#include "x86/truffle.hpp"
#elif defined(ARCH_ARM32) || defined(ARCH_AARCH64)
#include "arm/truffle.hpp"
#endif
template <uint16_t S>
static really_inline
const u8 *fwdBlock(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset, SuperVector<S> chars, const u8 *buf) {
SuperVector<S> res = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
SuperVector<S> res = blockSingleMask(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
return firstMatch<S>(buf, res);
}
@ -98,23 +79,26 @@ const u8 *truffleExecReal(m128 &shuf_mask_lo_highclear, m128 shuf_mask_lo_highse
__builtin_prefetch(d + 2*64);
__builtin_prefetch(d + 3*64);
__builtin_prefetch(d + 4*64);
DEBUG_PRINTF("start %p end %p \n", d, buf_end);
assert(d < buf_end);
if (d + S <= buf_end) {
// Reach vector aligned boundaries
DEBUG_PRINTF("until aligned %p \n", ROUNDUP_PTR(d, S));
if (!ISALIGNED_N(d, S)) {
SuperVector<S> chars = SuperVector<S>::loadu(d);
const u8 *dup = ROUNDUP_PTR(d, S);
rv = fwdBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, d);
if (rv) return rv;
d = ROUNDUP_PTR(d, S);
if (rv && rv < dup) return rv;
d = dup;
}
while(d + S <= buf_end) {
while(d + S <= buf_end) {
__builtin_prefetch(d + 64);
DEBUG_PRINTF("d %p \n", d);
SuperVector<S> chars = SuperVector<S>::load(d);
rv = fwdBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, d);
if (rv) return rv;
d += S;
d += S;
}
}
@ -122,44 +106,23 @@ const u8 *truffleExecReal(m128 &shuf_mask_lo_highclear, m128 shuf_mask_lo_highse
// finish off tail
if (d != buf_end) {
SuperVector<S> chars = SuperVector<S>::loadu(d);
SuperVector<S> chars = SuperVector<S>::loadu_maskz(d, buf_end - d);
rv = fwdBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, d);
DEBUG_PRINTF("rv %p \n", rv);
if (rv) return rv;
if (rv && rv < buf_end) return rv;
}
return buf_end;
}
template <uint16_t S>
static really_inline const u8 *truffleRevMini(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset,
const u8 *buf, const u8 *buf_end){
uintptr_t len = buf_end - buf;
DEBUG_PRINTF("buf %p len %ld\n", buf, len);
assert(len < S);
SuperVector<S> chars = SuperVector<S>::loadu_maskz(buf, len);
SuperVector<S> v = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
const u8 *rv = lastMatch<S>(buf, v);
DEBUG_PRINTF("rv %p buf+len %p \n", rv, buf+len);
if (rv && rv < buf+len) {
return rv;
}
return buf - 1;
}
template <uint16_t S>
static really_inline
const u8 *revBlock(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset, SuperVector<S> v,
const u8 *buf) {
SuperVector<S> res = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, v);
SuperVector<S> res = blockSingleMask(shuf_mask_lo_highclear, shuf_mask_lo_highset, v);
return lastMatch<S>(buf, res);
}
template <uint16_t S>
const u8 *rtruffleExecReal(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset, const u8 *buf, const u8 *buf_end){
assert(buf && buf_end);
@ -173,42 +136,45 @@ const u8 *rtruffleExecReal(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highse
const u8 *d = buf_end;
const u8 *rv;
__builtin_prefetch(d - 64);
__builtin_prefetch(d - 2*64);
__builtin_prefetch(d - 3*64);
__builtin_prefetch(d - 4*64);
DEBUG_PRINTF("start %p end %p \n", buf, d);
assert(d > buf);
if (d - S >= buf) {
// Reach vector aligned boundaries
DEBUG_PRINTF("until aligned %p \n", ROUNDDOWN_PTR(d, S));
if (!ISALIGNED_N(d, S)) {
// peel off first part to cacheline boundary
const u8 *d1 = ROUNDDOWN_PTR(d, S);
DEBUG_PRINTF("until aligned %p \n", d1);
if (d1 != d) {
rv = truffleRevMini(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, d1, d);
if (rv != d1 - 1) return rv;
d = d1;
}
SuperVector<S> chars = SuperVector<S>::loadu(d - S);
const u8 *dbot = ROUNDDOWN_PTR(d, S);
rv = revBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, d - S);
DEBUG_PRINTF("rv %p \n", rv);
if (rv >= dbot) return rv;
d = dbot;
}
while (d - S >= buf) {
d -= S;
DEBUG_PRINTF("d %p \n", d);
DEBUG_PRINTF("aligned %p \n", d);
// On large packet buffers, this prefetch appears to get us about 2%.
__builtin_prefetch(d - 64);
d -= S;
SuperVector<S> chars = SuperVector<S>::load(d);
rv = revBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, d);
if (rv) return rv;
}
}
DEBUG_PRINTF("tail: d %p e %p \n", buf, d);
// finish off tail
DEBUG_PRINTF("tail d %p e %p \n", buf, d);
// finish off head
if (d != buf) {
rv = truffleRevMini(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, buf, d);
SuperVector<S> chars = SuperVector<S>::loadu(buf);
rv = revBlock(wide_shuf_mask_lo_highclear, wide_shuf_mask_lo_highset, chars, buf);
DEBUG_PRINTF("rv %p \n", rv);
if (rv >= buf && rv < buf_end) return rv;
if (rv && rv < buf_end) return rv;
}
return buf - 1;
}

62
src/nfa/x86/truffle.hpp Normal file
View File

@ -0,0 +1,62 @@
/*
* Copyright (c) 2015-2017, Intel Corporation
* Copyright (c) 2020-2021, VectorCamp PC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/** \file
* \brief Truffle: character class acceleration.
*
*/
template <uint16_t S>
static really_inline
const SuperVector<S> blockSingleMask(SuperVector<S> shuf_mask_lo_highclear, SuperVector<S> shuf_mask_lo_highset, SuperVector<S> chars) {
chars.print8("chars");
shuf_mask_lo_highclear.print8("shuf_mask_lo_highclear");
shuf_mask_lo_highset.print8("shuf_mask_lo_highset");
SuperVector<S> highconst = SuperVector<S>::dup_u8(0x80);
highconst.print8("highconst");
SuperVector<S> shuf_mask_hi = SuperVector<S>::dup_u64(0x8040201008040201);
shuf_mask_hi.print8("shuf_mask_hi");
SuperVector<S> shuf1 = shuf_mask_lo_highclear.pshufb(chars);
shuf1.print8("shuf1");
SuperVector<S> t1 = chars ^ highconst;
t1.print8("t1");
SuperVector<S> shuf2 = shuf_mask_lo_highset.pshufb(t1);
shuf2.print8("shuf2");
SuperVector<S> t2 = highconst.opandnot(chars.template vshr_64_imm<4>());
t2.print8("t2");
SuperVector<S> shuf3 = shuf_mask_hi.pshufb(t2);
shuf3.print8("shuf3");
SuperVector<S> res = (shuf1 | shuf2) & shuf3;
res.print8("(shuf1 | shuf2) & shuf3");
return res.eq(SuperVector<S>::Zeroes());
}