tree 05889ad6039c7fb756e3f4823ae46e10b83eefa7
parent 54edf4671d5612ebb525a9a678d7b73bd143ee65
author Craig Topper <craig.topper@intel.com> 1529431612 +0000
committer Craig Topper <craig.topper@intel.com> 1529431612 +0000

[X86] Initialize FMA3Info directly in its constructor instead of relying on std::call_once

FMA3Info only exists as a managed static. As far as I know the ManagedStatic construction proccess is thread safe. It doesn't look like we ever access the ManagedStatic object without immediately doing a query on it that would require the map to be populated. So I don't think we're ever deferring the calculation of the tables from the construction of the object.

So I think we should be able to just populate the FMA3Info map directly in the constructor and get rid of all of the initGroupsOnce stuff.

Differential Revision: https://reviews.llvm.org/D48194

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335064 91177308-0d34-0410-b5e6-96231b3b80d8