From: Konstantinos Margaritis <markos@freevec.org>
Date: Mon, 12 Jul 2021 18:09:10 +0000 (+0300)
Subject: add AVX2 specializations
X-Git-Tag: v5.4.3+vectorscan~85
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b42b1877128c0ffd041e7b5538be91373342d3b6;p=thirdparty%2Fvectorscan.git

add AVX2 specializations
---

diff --git a/src/util/match.hpp b/src/util/match.hpp
index 74da50d8..ba72e2e9 100644
--- a/src/util/match.hpp
+++ b/src/util/match.hpp
@@ -56,6 +56,19 @@ const u8 *firstMatch<16>(const u8 *buf, typename SuperVector<16>::movemask_type
     }
 }
 
+template <>
+really_really_inline
+const u8 *firstMatch<32>(const u8 *buf, typename SuperVector<32>::movemask_type z) {
+    DEBUG_PRINTF("z 0x%08x\n", z);
+    if (unlikely(z != 0xffffffff)) {
+        u32 pos = ctz32(~z);
+        assert(pos < 32);
+        DEBUG_PRINTF("match @ pos %u\n", pos);
+        return buf + pos;
+    } else {
+        return NULL; // no match
+    }
+}
 template <>
 really_really_inline
 const u8 *firstMatch<64>(const u8 *buf, typename SuperVector<64>::movemask_type z) {
@@ -86,6 +99,19 @@ const u8 *lastMatch<16>(const u8 *buf, typename SuperVector<16>::movemask_type z
     }
 }
 
+template<>
+really_really_inline
+const u8 *lastMatch<32>(const u8 *buf, typename SuperVector<32>::movemask_type z) {
+    if (unlikely(z != 0xffffffff)) {
+        u32 pos = clz32(~z);
+        DEBUG_PRINTF("buf=%p, pos=%u\n", buf, pos);
+        assert(pos < 32);
+        return buf + (31 - pos);
+    } else {
+        return NULL; // no match
+    }
+}
+
 template <>
 really_really_inline
 const u8 *lastMatch<64>(const u8 *buf, typename SuperVector<64>::movemask_type z) {