Tim Armstrong has uploaded this change for review. ( http://gerrit.cloudera.org:8080/8802
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, 72 insertions(+), 2 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/02/8802/1 -- To view, visit http://gerrit.cloudera.org:8080/8802 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: Ic7c3ee3e370bafc50d855113485b7e6925f7bf6a Gerrit-Change-Number: 8802 Gerrit-PatchSet: 1 Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
