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masked version of dverm

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Alex Coyte
2016-03-21 16:19:46 +11:00
committed by Matthew Barr
parent 89d7728f77
commit b4727cf1ea
11 changed files with 371 additions and 13 deletions
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39
src/nfa/vermicelli_sse.h
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, Intel Corporation
* Copyright (c) 2015-2016, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -172,6 +172,27 @@ const u8 *dvermSearchAlignedNocase(m128 chars1, m128 chars2, u8 c1, u8 c2,
return buf;
}
static really_inline
const u8 *dvermSearchAlignedMasked(m128 chars1, m128 chars2,
m128 mask1, m128 mask2, u8 c1, u8 c2, u8 m1,
u8 m2, const u8 *buf, const u8 *buf_end) {
assert((size_t)buf % 16 == 0);
for (; buf + 16 < buf_end; buf += 16) {
m128 data = load128(buf);
u32 z = movemask128(and128(eq128(chars1, and128(data, mask1)),
shiftRight8Bits(eq128(chars2, and128(data, mask2)))));
if ((buf[15] & m1) == c1 && (buf[16] & m2) == c2) {
z |= (1 << 15);
}
if (unlikely(z)) {
u32 pos = ctz32(z);
return buf + pos;
}
}
return buf;
}
// returns NULL if not found
static really_inline
const u8 *dvermPrecondition(m128 chars1, m128 chars2, const u8 *buf) {
@@ -205,6 +226,22 @@ const u8 *dvermPreconditionNocase(m128 chars1, m128 chars2, const u8 *buf) {
return NULL;
}
// returns NULL if not found
static really_inline
const u8 *dvermPreconditionMasked(m128 chars1, m128 chars2,
m128 mask1, m128 mask2, const u8 *buf) {
m128 data = loadu128(buf); // unaligned
u32 z = movemask128(and128(eq128(chars1, and128(data, mask1)),
shiftRight8Bits(eq128(chars2, and128(data, mask2)))));
/* no fixup of the boundary required - the aligned run will pick it up */
if (unlikely(z)) {
u32 pos = ctz32(z);
return buf + pos;
}
return NULL;
}
static really_inline
const u8 *lastMatchOffset(const u8 *buf_end, u32 z) {
assert(z);