Hello Michael Ho, Jim Apple, Impala Public Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/8802
to look at the new patch set (#5).
Change subject: IMPALA-6291: disable AVX512 codegen in LLVM
......................................................................
IMPALA-6291: disable AVX512 codegen in LLVM
Adds a whitelist of LLVM CPU attributes that I know that we routinely
test Impala with. This excludes the problematic AVX512 attributes as
well as some other flags we don't test with - e.g. AMD-only
instructions, NVM-related instructions, etc. We're unlikely to get
significant benefit from these instruction set extensions without
explicitly using them via instrinsics.
Testing:
Ran core tests on a system with AVX512 support with a prototype patch
that disabled only the AVX512 flags. Added a backend test to make sure
that the whitelisting is working as expected.
Change-Id: Ic7c3ee3e370bafc50d855113485b7e6925f7bf6a
---
M be/src/codegen/llvm-codegen-test.cc
M be/src/codegen/llvm-codegen.cc
M be/src/codegen/llvm-codegen.h
3 files changed, 71 insertions(+), 2 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/02/8802/5
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ic7c3ee3e370bafc50d855113485b7e6925f7bf6a
Gerrit-Change-Number: 8802
Gerrit-PatchSet: 5
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Jim Apple <jbapple-imp...@apache.org>
Gerrit-Reviewer: Michael Ho <k...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
