Jakob Stoklund Olesen f5916976e9 Add MachineInstr::getRegClassConstraint(). ...

Most instructions have some requirements for their register operands.
Usually, this is expressed as register class constraints in the
MCInstrDesc, but for inline assembly the constraints are encoded in the
flag words.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141835 91177308-0d34-0410-b5e6-96231b3b80d8

2011-10-12 23:37:36 +00:00

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