Youwei Wang has uploaded a new patch set (#2). Change subject: Impala-4058: unaligned memory access issue in SIMDed byteswap. ......................................................................
Impala-4058: unaligned memory access issue in SIMDed byteswap. Substitute the direct memory assignments using _mm_loadu_si128/_mm_storeu_si128 to prevent the compiler from generating aligned memory access instructions which may cause crash. Add new test cases in the expr-test.cc and re-run the bswap-benchmark. No performance regression observed. Change-Id: I2986991f8b695d68af465fd0aff293d3d03709a0 --- M be/src/benchmarks/bswap-benchmark.cc M be/src/exprs/expr-test.cc M be/src/util/bit-util.cc 3 files changed, 38 insertions(+), 19 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/98/4198/2 -- To view, visit http://gerrit.cloudera.org:8080/4198 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I2986991f8b695d68af465fd0aff293d3d03709a0 Gerrit-PatchSet: 2 Gerrit-Project: Impala Gerrit-Branch: cdh5-trunk Gerrit-Owner: Youwei Wang <[email protected]>
