1. Clean up the TargetMachine structure. No more wierd pointers that have to
be cast around and taken care of by the target.
2. Instruction Scheduling now takes the schedinfo as an argument. The same
should be done with the instinfo, it just isn't now.
3. Sparc.h is now just a factory method. Eventually this file will dissapear,
but probably not until we have more than one backend. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@564 91177308-0d34-0410-b5e6-96231b3b80d8
69db8da023