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[ARM] Reject invalid -march values

Authored by john.brawn on May 8 2015, 4:23 AM.



Restructure Triple::getARMCPUForArch so that invalid values will return nullptr, while retaining the behaviour that an argument specifying no particular architecture version will give a default CPU. This will be used by clang (in D9602) to give an error on invalid -march values.

Also restructure the extraction of the architecture version from the MArch string a little to hopefully make what it's doing clearer.

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john.brawn updated this revision to Diff 25302.May 8 2015, 4:23 AM
john.brawn retitled this revision from to [ARM] Reject invalid -march values.
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rengolin accepted this revision.May 8 2015, 4:35 AM
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Hi John,

I just happened to have a look at this method yesterday, due to D9435, and I plan on using it later on. For now, this looks a lot better than what we have.

LGTM, thanks!

This revision is now accepted and ready to land.May 8 2015, 4:35 AM
This revision was automatically updated to reflect the committed changes.