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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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8
src/nfa/mpv.c
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@@ -1,5 +1,6 @@
/*
* Copyright (c) 2015-2016, 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:
@@ -260,6 +261,13 @@ size_t limitByReach(const struct mpv_kilopuff *kp, const u8 *buf,
} else if (kp->type == MPV_NVERM) {
return nvermicelliExec(kp->u.verm.c, 0, buf, buf + length) - buf;
}
#ifdef HAVE_SVE2
else if (kp->type == MPV_VERM16) {
return vermicelli16Exec(kp->u.verm16.mask, buf, buf + length) - buf;
} else if (kp->type == MPV_NVERM16) {
return nvermicelli16Exec(kp->u.verm16.mask, buf, buf + length) - buf;
}
#endif // HAVE_SVE2
assert(kp->type == MPV_DOT);
return length;