Dan Gohman e14b8d9853 Generalize getRegisterClassForRegister to handle registers ...

in multiple classes in the case that the classes are all
in subset/superset relations. This function is used by the
fast-isel emitter, which always wants the super-most set.

llvm-svn: 68957

2009-04-13 15:24:11 +00:00

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