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Commit a8f8234f authored by John Brawn's avatar John Brawn
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[ARM] Adjust -march checking 

getCanonicalArchName can return an empty string for an architecture
that is well-formed but meaningless. Use parseArch to determine if
it's actually valid or not.

Differential Revision: http://reviews.llvm.org/D10120

llvm-svn: 238553
parent 1196ca21
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