emkornfield commented on a change in pull request #6954:
URL: https://github.com/apache/arrow/pull/6954#discussion_r415226340
##########
File path: cpp/src/arrow/util/hash_util.h
##########
@@ -27,39 +27,27 @@
#include "arrow/util/logging.h"
#include "arrow/util/macros.h"
-#include "arrow/util/neon_util.h"
-#include "arrow/util/sse_util.h"
+#include "arrow/util/simd.h"
-static inline uint32_t HW_crc32_u8(uint32_t crc, uint8_t v) {
- DCHECK(false) << "Hardware CRC support is not enabled";
- return 0;
-}
-
-static inline uint32_t HW_crc32_u16(uint32_t crc, uint16_t v) {
- DCHECK(false) << "Hardware CRC support is not enabled";
- return 0;
-}
-
-static inline uint32_t HW_crc32_u32(uint32_t crc, uint32_t v) {
- DCHECK(false) << "Hardware CRC support is not enabled";
- return 0;
-}
-
-static inline uint32_t HW_crc32_u64(uint32_t crc, uint64_t v) {
+#ifdef ARROW_HAVE_SSE4_2
Review comment:
I'd be concerned about putting too much in SIMD directly. If we expect
these to be used in other places that don't depend on this header we should
create a specific header targetted at hardware. digests/hashing.
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