Zach Amsden has uploaded a new patch set (#2). Change subject: Impala ABM / LZCNT support ......................................................................
Impala ABM / LZCNT support I recently added some code that wants to do upwards power of 2 calculation. Turns out this can be done much more quickly in hardware. It isn't on a perf critical code path yet but still seems like a decent idea. Testing: Added a perf test to verify this is faster (it is) and updated the bit-util-test to add better test coverage. Change-Id: I9f6a465ab4a9ee4f582847f8e211a779bdede3d2 --- M be/src/benchmarks/CMakeLists.txt A be/src/benchmarks/bit-intrinsics-benchmark.cc M be/src/util/bit-util-test.cc M be/src/util/bit-util.h M be/src/util/cpu-info.cc M be/src/util/cpu-info.h M be/src/util/fixed-size-hash-table.h M be/src/util/sse-util.h 8 files changed, 280 insertions(+), 14 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/21/5821/2 -- To view, visit http://gerrit.cloudera.org:8080/5821 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I9f6a465ab4a9ee4f582847f8e211a779bdede3d2 Gerrit-PatchSet: 2 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Zach Amsden <zams...@cloudera.com> Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com> Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Reviewer: Zach Amsden <zams...@cloudera.com>
