PeterPtroc commented on code in PR #8031: URL: https://github.com/apache/hadoop/pull/8031#discussion_r2647952233
########## hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/util/bulk_crc32_riscv.c: ########## @@ -16,24 +16,200 @@ * limitations under the License. */ +#include <assert.h> +#include <stddef.h> // for size_t +#include <stdio.h> +#include <string.h> + +#include "bulk_crc32.h" +#include "gcc_optimizations.h" + +/** + * Hardware-accelerated CRC32 calculation using RISC-V Zbc extension. + * Uses carry-less multiply instructions (clmul/clmulh) for CRC32 (zlib + * polynomial). + */ + +typedef void (*crc_pipelined_func_t)(uint32_t *, uint32_t *, uint32_t *, + const uint8_t *, size_t, int); +extern crc_pipelined_func_t pipelined_crc32_zlib_func; + +#if defined(__riscv) && (__riscv_xlen == 64) + +#define RV_CRC32_CONST_R3 0x01751997d0ULL Review Comment: done -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
