Evan Cheng b5f0ec3eb7 Add TargetInstrInfo::isSafeToMoveRegisterClassDefs. It returns true if it's safe to move an instruction which defines a value in the register class. Replace pre-splitting specific IgnoreRegisterClassBarriers with this new hook. ...

llvm-svn: 63936

2009-02-06 17:17:30 +00:00

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