Jakob Stoklund Olesen 3b7b7bcc7f Use the new TRI->getLargestLegalSuperClass hook to constrain register class inflation. ...

This has two effects: 1. We never inflate to a larger register class than what
the sub-target can handle. 2. Completely unconstrained virtual registers get the
largest possible register class.

llvm-svn: 130229

2011-04-26 18:52:36 +00:00

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