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Implement new Vermicelli16 acceleration functions using SVE2.

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The scheme utilises the MATCH and NMATCH instructions to
scan for 16 characters at the same rate as vermicelli
scans for one.

Change-Id: Ie2cef904c56651e6108593c668e9b65bc001a886
This commit is contained in:
George Wort
2021-06-28 16:29:43 +01:00
committed by Konstantinos Margaritis
parent b6a7ee7e84
commit b54710d208
25 changed files with 1153 additions and 8 deletions
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37
src/nfa/nfa_build_util.cpp
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@@ -1,5 +1,6 @@
/*
* Copyright (c) 2015-2020, Intel Corporation
* Copyright (c) 2021, Arm Limited
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -340,6 +341,42 @@ const nfa_dispatch_fn NFATraits<LBR_NFA_NVERM>::has_repeats_other_than_firsts =
const char *NFATraits<LBR_NFA_NVERM>::name = "Lim Bounded Repeat (NV)";
#endif
#ifdef HAVE_SVE2
template<> struct NFATraits<LBR_NFA_VERM16> {
UNUSED static const char *name;
static const NFACategory category = NFA_OTHER;
static const u32 stateAlign = 8;
static const bool fast = true;
static const nfa_dispatch_fn has_accel;
static const nfa_dispatch_fn has_repeats;
static const nfa_dispatch_fn has_repeats_other_than_firsts;
};
const nfa_dispatch_fn NFATraits<LBR_NFA_VERM16>::has_accel = dispatch_false;
const nfa_dispatch_fn NFATraits<LBR_NFA_VERM16>::has_repeats = dispatch_false;
const nfa_dispatch_fn NFATraits<LBR_NFA_VERM16>::has_repeats_other_than_firsts = dispatch_false;
#if defined(DUMP_SUPPORT)
const char *NFATraits<LBR_NFA_VERM16>::name = "Lim Bounded Repeat (V16)";
#endif
template<> struct NFATraits<LBR_NFA_NVERM16> {
UNUSED static const char *name;
static const NFACategory category = NFA_OTHER;
static const u32 stateAlign = 8;
static const bool fast = true;
static const nfa_dispatch_fn has_accel;
static const nfa_dispatch_fn has_repeats;
static const nfa_dispatch_fn has_repeats_other_than_firsts;
};
const nfa_dispatch_fn NFATraits<LBR_NFA_NVERM16>::has_accel = dispatch_false;
const nfa_dispatch_fn NFATraits<LBR_NFA_NVERM16>::has_repeats = dispatch_false;
const nfa_dispatch_fn NFATraits<LBR_NFA_NVERM16>::has_repeats_other_than_firsts = dispatch_false;
#if defined(DUMP_SUPPORT)
const char *NFATraits<LBR_NFA_NVERM16>::name = "Lim Bounded Repeat (NV16)";
#endif
#endif // HAVE_SVE2
template<> struct NFATraits<LBR_NFA_SHUF> {
UNUSED static const char *name;
static const NFACategory category = NFA_OTHER;