Jim Apple has posted comments on this change. Change subject: IMPALA-2809: Improve ByteSwap with builtin function or SSE or AVX2. ......................................................................
Patch Set 10: (7 comments) http://gerrit.cloudera.org:8080/#/c/3081/10/be/src/benchmarks/bswap-benchmark.cc File be/src/benchmarks/bswap-benchmark.cc: Line 32: This benchmark Where did the results table go? Line 33: Decimal6 Decimal16 Line 36: FasterByteswap Improved by whom, and when? Is this the version in the code now? Please give it a more meaningful description. Line 156: different data width Ehat does it mean to implement byteswap with different data widths? Line 157: template <int num_bytes, int fixed_len_size> This is still a lot of code duplication. Please try to make it more concise. Line 157: num_bytes Please make template parameters formatting follow our style guide. Line 187: 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 12, 13, 8, 9, 4, 5, 0, 1, Can you explain where these constants come from? -- To view, visit http://gerrit.cloudera.org:8080/3081 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: comment Gerrit-Change-Id: I392ed5a8d5683f30f161282c228c1aedd7b648c1 Gerrit-PatchSet: 10 Gerrit-Project: Impala Gerrit-Branch: cdh5-trunk Gerrit-Owner: Youwei Wang <[email protected]> Gerrit-Reviewer: Alex Behm <[email protected]> Gerrit-Reviewer: Jim Apple <[email protected]> Gerrit-Reviewer: Marcel Kornacker <[email protected]> Gerrit-Reviewer: Mostafa Mokhtar <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-Reviewer: Youwei Wang <[email protected]> Gerrit-HasComments: Yes
