old data

2025-08-25 09:50:30 +08:00
parent bd0e31e922
commit 1359ff4ecc
1630 changed files with 738486 additions and 2399 deletions
@@ -0,0 +1,53 @@
+#include "ssc_intrinsic.h"
+
+int index_pair_sse(short const *str, uint32_t target, int length)
+{
+        int index = 0, result = 0, size = length, end = size - 8;
+        __m128i s = { 
+                                   target,
+                                   target,
+                                   target,
+                                   target,
+                           };
+        __m128i vec, com;
+
+        while (index < end) {
+                vec = _mm_loadu_epi32(str + index);
+                com = _mm_cmpeq_epi16(vec, s);
+                result = _mm_movemask_epi8(com);
+                if (result) {
+                        for (size_t i = 0; i < 7; i++) {
+                                if (((result & 0xF) == 0xF)) {
+                                        return index + i;
+                                }
+                                if (result == 0) {
+                                        break;
+                                }
+                                result >>= 2;
+                        }
+                }
+                index += 1;
+                vec = _mm_loadu_epi32(str + index);
+                com = _mm_cmpeq_epi16(vec, s);
+                result = _mm_movemask_epi8(com);
+                if (result) {
+                        for (size_t i = 0; i < 7; i++) {
+                                if (((result & 0xF) == 0xF)) {
+                                        return index + i;
+                                }
+                                if (result == 0) {
+                                        break;
+                                }
+                                result >>= 2;
+                        }
+                }
+                index += 7;
+        }
+        for (; (index < size - 1) && (!result); index += 2) {
+                result = *(int *)(str + index) == target;
+        }
+        if (result) {
+                return index;
+        }
+        return -1;
+}