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Reinforced Teddy with 1-byte approach, based on "shift-or" and AVX2.

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This commit is contained in:
Chang, Harry
2017-01-22 12:23:25 -08:00
committed by Matthew Barr
parent b09e3acd04
commit dbd3f66e87
10 changed files with 1070 additions and 1233 deletions
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79
src/fdr/fdr_confirm_runtime.h
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@@ -43,11 +43,12 @@ void confWithBit(const struct FDRConfirm *fdrc, const struct FDR_Runtime_Args *a
size_t i, hwlmcb_rv_t *control, u32 *last_match,
u64a conf_key) {
assert(i < a->len);
assert(i >= a->start_offset);
assert(ISALIGNED(fdrc));
const u8 * buf = a->buf;
u32 c = CONF_HASH_CALL(conf_key, fdrc->andmsk, fdrc->mult,
fdrc->nBitsOrSoleID);
fdrc->nBits);
u32 start = getConfirmLitIndex(fdrc)[c];
if (likely(!start)) {
return;
@@ -94,80 +95,4 @@ void confWithBit(const struct FDRConfirm *fdrc, const struct FDR_Runtime_Args *a
} while (oldNext);
}
// 'light-weight' confirmation function which is used by 1-mask Teddy;
// in the 'confirmless' case it simply calls callback function,
// otherwise it calls 'confWithBit' function for the full confirmation procedure
static really_inline
void confWithBit1(const struct FDRConfirm *fdrc,
const struct FDR_Runtime_Args *a, size_t i,
hwlmcb_rv_t *control, u32 *last_match, u64a conf_key) {
assert(i < a->len);
assert(ISALIGNED(fdrc));
if (unlikely(fdrc->mult)) {
confWithBit(fdrc, a, i, control, last_match, conf_key);
return;
} else {
u32 id = fdrc->nBitsOrSoleID;
if ((*last_match == id) && (fdrc->flags & FDRC_FLAG_NOREPEAT)) {
return;
}
*last_match = id;
*control = a->cb(i, i, id, a->ctxt);
}
}
// This is 'light-weight' confirmation function which is used by 2-3-4-mask Teddy
// In the 'confirmless' case it makes fast 32-bit comparison,
// otherwise it calls 'confWithBit' function for the full confirmation procedure
static really_inline
void confWithBitMany(const struct FDRConfirm *fdrc,
const struct FDR_Runtime_Args *a, size_t i, CautionReason r,
hwlmcb_rv_t *control, u32 *last_match, u64a conf_key) {
assert(i < a->len);
assert(ISALIGNED(fdrc));
if (i < a->start_offset) {
return;
}
if (unlikely(fdrc->mult)) {
confWithBit(fdrc, a, i, control, last_match, conf_key);
return;
} else {
const u32 id = fdrc->nBitsOrSoleID;
const u32 len = fdrc->soleLitSize;
if ((*last_match == id) && (fdrc->flags & FDRC_FLAG_NOREPEAT)) {
return;
}
if (r == VECTORING && len > i - a->start_offset) {
if (len > i + a->len_history) {
return;
}
u32 cmp = (u32)a->buf[i] << 24;
if (len <= i) {
for (u32 j = 1; j <= len; j++) {
cmp |= (u32)a->buf[i - j] << (24 - (j * 8));
}
} else {
for (u32 j = 1; j <= i; j++) {
cmp |= (u32)a->buf[i - j] << (24 - (j * 8));
}
cmp |= (u32)(a->histBytes >> (40 + i * 8));
}
if ((fdrc->soleLitMsk & cmp) != fdrc->soleLitCmp) {
return;
}
}
*last_match = id;
*control = a->cb(i - len, i, id, a->ctxt);
}
}
#endif