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I think that this works (and adds no appreciable driver complexity) provided that we're not expecting to support -mtune. If clang is (one day) going to be able to isel based on one target and optimize based on another then we might find ourselves wanting to change the meaning of -march from 'isel and optimize' to 'isel only'. So Amara's question about -mtune (or more

Ping. Can I assume that we're ok with this interface proposal then? Amara -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140127/49962cbc/attachment.html>