#include "util/simd_utils.h"
#include "util/simd_utils_ssse3.h"
-#define shift128r(a, b) _mm_srli_epi64((a), (b))
+#include "truffle_common.h"
-static really_inline
-const u8 *firstMatch(const u8 *buf, u32 z) {
- if (unlikely(z != 0xffff)) {
- u32 pos = ctz32(~z & 0xffff);
- assert(pos < 16);
- return buf + pos;
- }
-
- return NULL; // no match
-}
+#if !defined(__AVX2__)
static really_inline
const u8 *lastMatch(const u8 *buf, u32 z) {
return NULL; // no match
}
-static really_inline
-u32 block(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset, m128 v) {
-
- m128 highconst = _mm_set1_epi8(0x80);
- m128 shuf_mask_hi = _mm_set1_epi64x(0x8040201008040201);
-
- // and now do the real work
- m128 shuf1 = pshufb(shuf_mask_lo_highclear, v);
- m128 t1 = xor128(v, highconst);
- m128 shuf2 = pshufb(shuf_mask_lo_highset, t1);
- m128 t2 = andnot128(highconst, shift128r(v, 4));
- m128 shuf3 = pshufb(shuf_mask_hi, t2);
- m128 tmp = and128(or128(shuf1, shuf2), shuf3);
- m128 tmp2 = eq128(tmp, zeroes128());
- u32 z = movemask128(tmp2);
-
- return z;
-}
-
static really_inline
const u8 *fwdBlock(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset,
m128 v, const u8 *buf) {
return lastMatch(buf, z);
}
-static
-const u8 *truffleMini(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset,
- const u8 *buf, const u8 *buf_end) {
- uintptr_t len = buf_end - buf;
- assert(len < 16);
-
- m128 chars = zeroes128();
- memcpy(&chars, buf, len);
-
- u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
- // can't be these bytes in z
- u32 mask = (0xFFFF >> (16 - len)) ^ 0xFFFF;
- const u8 *rv = firstMatch(buf, z| mask);
-
- if (rv) {
- return rv;
- } else {
- return buf_end;
- }
-}
-
const u8 *truffleExec(m128 shuf_mask_lo_highclear,
- m128 shuf_mask_lo_highset,
- const u8 *buf, const u8 *buf_end) {
+ m128 shuf_mask_lo_highset,
+ const u8 *buf, const u8 *buf_end) {
DEBUG_PRINTF("len %zu\n", buf_end - buf);
assert(buf && buf_end);
static
const u8 *truffleRevMini(m128 shuf_mask_lo_highclear,
- m128 shuf_mask_lo_highset, const u8 *buf,
- const u8 *buf_end) {
+ m128 shuf_mask_lo_highset, const u8 *buf,
+ const u8 *buf_end) {
uintptr_t len = buf_end - buf;
assert(len < 16);
return buf - 1;
}
-
const u8 *rtruffleExec(m128 shuf_mask_lo_highclear,
m128 shuf_mask_lo_highset,
const u8 *buf, const u8 *buf_end) {
-
assert(buf && buf_end);
assert(buf < buf_end);
const u8 *rv;
return buf - 1;
}
+#else
+
+static really_inline
+const u8 *lastMatch(const u8 *buf, u32 z) {
+ if (unlikely(z != 0xffffffff)) {
+ u32 pos = clz32(~z);
+ assert(pos < 32);
+ return buf + (31 - pos);
+ }
+
+ return NULL; // no match
+}
+
+static really_inline
+const u8 *fwdBlock(m256 shuf_mask_lo_highclear, m256 shuf_mask_lo_highset,
+ m256 v, const u8 *buf) {
+ u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, v);
+ return firstMatch(buf, z);
+}
+
+static really_inline
+const u8 *revBlock(m256 shuf_mask_lo_highclear, m256 shuf_mask_lo_highset,
+ m256 v, const u8 *buf) {
+ u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, v);
+ return lastMatch(buf, z);
+}
+
+const u8 *truffleExec(m128 shuf_mask_lo_highclear,
+ m128 shuf_mask_lo_highset,
+ const u8 *buf, const u8 *buf_end) {
+ DEBUG_PRINTF("len %zu\n", buf_end - buf);
+ const m256 wide_clear = set2x128(shuf_mask_lo_highclear);
+ const m256 wide_set = set2x128(shuf_mask_lo_highset);
+
+ assert(buf && buf_end);
+ assert(buf < buf_end);
+ const u8 *rv;
+
+ if (buf_end - buf < 32) {
+ return truffleMini(wide_clear, wide_set, buf, buf_end);
+ }
+
+ size_t min = (size_t)buf % 32;
+ assert(buf_end - buf >= 32);
+
+ // Preconditioning: most of the time our buffer won't be aligned.
+ m256 chars = loadu256(buf);
+ rv = fwdBlock(wide_clear, wide_set, chars, buf);
+ if (rv) {
+ return rv;
+ }
+ buf += (32 - min);
+
+ const u8 *last_block = buf_end - 32;
+ while (buf < last_block) {
+ m256 lchars = load256(buf);
+ rv = fwdBlock(wide_clear, wide_set, lchars, buf);
+ if (rv) {
+ return rv;
+ }
+ buf += 32;
+ }
+
+ // Use an unaligned load to mop up the last 32 bytes and get an accurate
+ // picture to buf_end.
+ assert(buf <= buf_end && buf >= buf_end - 32);
+ chars = loadu256(buf_end - 32);
+ rv = fwdBlock(wide_clear, wide_set, chars, buf_end - 32);
+ if (rv) {
+ return rv;
+ }
+ return buf_end;
+}
+
+static
+const u8 *truffleRevMini(m256 shuf_mask_lo_highclear,
+ m256 shuf_mask_lo_highset, const u8 *buf,
+ const u8 *buf_end) {
+ uintptr_t len = buf_end - buf;
+ assert(len < 32);
+
+ m256 chars = zeroes256();
+ memcpy(&chars, buf, len);
+
+ u32 mask = (0xFFFFFFFF >> (32 - len)) ^ 0xFFFFFFFF;
+ u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
+ const u8 *rv = lastMatch(buf, z | mask);
+
+ if (rv) {
+ return rv;
+ }
+ return buf - 1;
+}
+
+
+const u8 *rtruffleExec(m128 shuf_mask_lo_highclear,
+ m128 shuf_mask_lo_highset,
+ const u8 *buf, const u8 *buf_end) {
+ const m256 wide_clear = set2x128(shuf_mask_lo_highclear);
+ const m256 wide_set = set2x128(shuf_mask_lo_highset);
+ assert(buf && buf_end);
+ assert(buf < buf_end);
+ const u8 *rv;
+
+ DEBUG_PRINTF("len %zu\n", buf_end - buf);
+
+ if (buf_end - buf < 32) {
+ return truffleRevMini(wide_clear, wide_set, buf, buf_end);
+ }
+
+ assert(buf_end - buf >= 32);
+
+ // Preconditioning: most of the time our buffer won't be aligned.
+ m256 chars = loadu256(buf_end - 32);
+ rv = revBlock(wide_clear, wide_set, chars,
+ buf_end - 32);
+ if (rv) {
+ return rv;
+ }
+ buf_end = (const u8 *)((size_t)buf_end & ~((size_t)0x1f));
+
+ const u8 *last_block = buf + 32;
+ while (buf_end > last_block) {
+ buf_end -= 32;
+ m256 lchars = load256(buf_end);
+ rv = revBlock(wide_clear, wide_set, lchars, buf_end);
+ if (rv) {
+ return rv;
+ }
+ }
+
+ // Use an unaligned load to mop up the last 32 bytes and get an accurate
+ // picture to buf_end.
+ chars = loadu256(buf);
+ rv = revBlock(wide_clear, wide_set, chars, buf);
+ if (rv) {
+ return rv;
+ }
+ return buf - 1;
+}
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * 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.
+ */
+
+#ifndef TRUFFLE_COMMON_H_
+#define TRUFFLE_COMMON_H_
+
+#include "util/bitutils.h"
+#include "util/simd_utils.h"
+#include "util/simd_utils_ssse3.h"
+
+/*
+ * Common stuff for all versions of truffle (single, multi and multidouble)
+ */
+#if !defined(__AVX2__)
+
+static really_inline
+const u8 *firstMatch(const u8 *buf, u32 z) {
+ if (unlikely(z != 0xffff)) {
+ u32 pos = ctz32(~z & 0xffff);
+ assert(pos < 16);
+ return buf + pos;
+ }
+
+ return NULL; // no match
+}
+
+#define shift128r(a, b) _mm_srli_epi64((a), (b))
+static really_inline
+u32 block(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset, m128 v) {
+
+ m128 highconst = _mm_set1_epi8(0x80);
+ m128 shuf_mask_hi = _mm_set1_epi64x(0x8040201008040201);
+
+ // and now do the real work
+ m128 shuf1 = pshufb(shuf_mask_lo_highclear, v);
+ m128 t1 = xor128(v, highconst);
+ m128 shuf2 = pshufb(shuf_mask_lo_highset, t1);
+ m128 t2 = andnot128(highconst, shift128r(v, 4));
+ m128 shuf3 = pshufb(shuf_mask_hi, t2);
+ m128 tmp = and128(or128(shuf1, shuf2), shuf3);
+ m128 tmp2 = eq128(tmp, zeroes128());
+ u32 z = movemask128(tmp2);
+
+ return z;
+}
+
+static
+const u8 *truffleMini(m128 shuf_mask_lo_highclear, m128 shuf_mask_lo_highset,
+ const u8 *buf, const u8 *buf_end) {
+ uintptr_t len = buf_end - buf;
+ assert(len < 16);
+
+ m128 chars = zeroes128();
+ memcpy(&chars, buf, len);
+
+ u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
+ // can't be these bytes in z
+ u32 mask = (0xFFFF >> (16 - len)) ^ 0xFFFF;
+ const u8 *rv = firstMatch(buf, z| mask);
+
+ if (rv) {
+ return rv;
+ } else {
+ return buf_end;
+ }
+}
+
+#else
+
+static really_inline
+const u8 *firstMatch(const u8 *buf, u32 z) {
+ if (unlikely(z != 0xffffffff)) {
+ u32 pos = ctz32(~z);
+ assert(pos < 32);
+ return buf + pos;
+ }
+
+ return NULL; // no match
+}
+
+#define shift256r(a, b) _mm256_srli_epi64((a), (b))
+static really_inline
+u32 block(m256 shuf_mask_lo_highclear, m256 shuf_mask_lo_highset, m256 v) {
+
+ m256 highconst = _mm256_set1_epi8(0x80);
+ m256 shuf_mask_hi = _mm256_set1_epi64x(0x8040201008040201);
+
+ // and now do the real work
+ m256 shuf1 = vpshufb(shuf_mask_lo_highclear, v);
+ m256 t1 = xor256(v, highconst);
+ m256 shuf2 = vpshufb(shuf_mask_lo_highset, t1);
+ m256 t2 = andnot256(highconst, shift256r(v, 4));
+ m256 shuf3 = vpshufb(shuf_mask_hi, t2);
+ m256 tmp = and256(or256(shuf1, shuf2), shuf3);
+ m256 tmp2 = eq256(tmp, zeroes256());
+ u32 z = movemask256(tmp2);
+
+ return z;
+}
+
+static
+const u8 *truffleMini(m256 shuf_mask_lo_highclear, m256 shuf_mask_lo_highset,
+ const u8 *buf, const u8 *buf_end) {
+ uintptr_t len = buf_end - buf;
+ assert(len < 32);
+
+ m256 chars = zeroes256();
+ memcpy(&chars, buf, len);
+
+ u32 z = block(shuf_mask_lo_highclear, shuf_mask_lo_highset, chars);
+ // can't be these bytes in z
+ u32 mask = (0xFFFFFFFF >> (32 - len)) ^ 0xFFFFFFFF;
+ const u8 *rv = firstMatch(buf, z | mask);
+
+ if (rv) {
+ return rv;
+ } else {
+ return buf_end;
+ }
+}
+
+#endif
+
+#endif /* TRUFFLE_COMMON_H_ */
projects / thirdparty / vectorscan.git / commitdiff
