Jakob Stoklund Olesen 381eeb2932 Add a MachineOperand iterator class.
The MIOperands iterator can visit operands on a single instruction, or
all operands in a bundle.  This simplifies code like the register
allocator that treats bundles as a set of operands.

llvm-svn: 151529
2012-02-27 18:09:36 +00:00
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