[PATCH] [ARM] Restructure cpu handling in the driver to mostly use the triple

[Renato Golin]

With the extra comment, LGTM.

Thanks!
--renato


REPOSITORY
  rL LLVM

================
Comment at: lib/Driver/Tools.cpp:5741
@@ -5691,2 +5740,3 @@
 
   return llvm::StringSwitch<const char *>(CPU)
+    .Cases("arm8", "arm810", "v4")
----------------
FIXME: Move to ARMTargetParser.

http://reviews.llvm.org/D9879

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