zstd/compress/zstd_lazy.c

1494     U32 offset_1 = rep[0], offset_2 = rep[1], savedOffset=0;
1516         if (offset_1 > maxRep) savedOffset = offset_1, offset_1 = 0;
1521         assert(offset_1 <= dictAndPrefixLength);
1546             const U32 repIndex = (U32)(ip - base) + 1 - offset_1;
1559           && ((offset_1 > 0) & (MEM_read32(ip+1-offset_1) == MEM_read32(ip+1)))) {
1560             matchLength = ZSTD_count(ip+1+4, ip+1+4-offset_1, iend) + 4;
1582               && (offcode) && ((offset_1>0) & (MEM_read32(ip) == MEM_read32(ip - offset_1)))) {
1583                 size_t const mlRep = ZSTD_count(ip+4, ip+4-offset_1, iend) + 4;
1590                 const U32 repIndex = (U32)(ip - base) - offset_1;
1618                   && (offcode) && ((offset_1>0) & (MEM_read32(ip) == MEM_read32(ip - offset_1)))) {
1619                     size_t const mlRep = ZSTD_count(ip+4, ip+4-offset_1, iend) + 4;
1626                     const U32 repIndex = (U32)(ip - base) - offset_1;
1668             offset_2 = offset_1; offset_1 = (U32)STORED_OFFSET(offcode);
1689                     offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode;   /* swap offset_2 <=> offset_1 */
1704                 offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode; /* swap repcodes */
1712     rep[0] = offset_1 ? offset_1 : savedOffset;
1885     U32 offset_1 = rep[0], offset_2 = rep[1];
1912             const U32 repIndex = (U32)(curr+1 - offset_1);
1916                & (offset_1 <= curr+1 - windowLow) ) /* note: we are searching at curr+1 */
1944                 const U32 repIndex = (U32)(curr - offset_1);
1948                    & (offset_1 <= curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
1976                     const U32 repIndex = (U32)(curr - offset_1);
1980                        & (offset_1 <= curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
2009             offset_2 = offset_1; offset_1 = (U32)STORED_OFFSET(offcode);
2032                 offcode = offset_2; offset_2 = offset_1; offset_1 = (U32)offcode;   /* swap offset history */
2042     rep[0] = offset_1;