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0795d302de
Finkel, Eric Christopher, and a bunch of other people I'm probably forgetting (sorry), add an option to the x86 backend to widen vectors during type legalization rather than promote them. This still would promote vNi1 vectors to get the masks right, but would widen other vectors. A lot of experiments are piling up right now showing that widening should probably be the default legalization strategy outside of vNi1 cases, but it is very hard to test the rammifications of that and fix bugs in widening-based legalization without an option that enables it. I'll be checking in tests shortly that use this option to exercise cases where widening doesn't work well and hopefully we'll be able to switch fully to this soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212249 91177308-0d34-0410-b5e6-96231b3b80d8
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