Enable sse 4.2 by default for clang 6.0 and newer as well (!1019) · Merge requests · Gaudi / Gaudi

Christopher Rob Jones requested to merge jonrob/Gaudi:ClangAddSSE42ByDefault into master Dec 12, 2019

Currently building for x86_64-centos7-clang8-opt does not automatically enable SSXE4.2, unlike x86_64-centos7-gcc9-opt which does. This MR adds parity so both now are defined with the same vectorisation level enabled.

Hopefully will help to remove some unnecessary diffs between the gcc9 and clang8 test results in LHCb nightlies.

Edited Dec 12, 2019 by Christopher Rob Jones

Enable sse 4.2 by default for clang 6.0 and newer as well

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