llvm-project/llvm/include
Jakob Stoklund Olesen 6e429a16fd Remove the TRI::getSubRegisterRegClass() hook.
This restores my karma after I added TRI::getSubClassWithSubReg().

Register constraints are applied 'backwards'.  Starting from the
register class required by an instruction operand, the correct question
is: 'How can I constrain the super-register register class so all its
sub-registers satisfy the instruction constraint?' The
getMatchingSuperRegClass() hook answers that.

We never need to go 'forwards': Starting from a super-register register
class, what register class are the sub-registers in?  The
getSubRegisterRegClass() hook did that.

llvm-svn: 141258
2011-10-06 00:08:27 +00:00
..
llvm Remove the TRI::getSubRegisterRegClass() hook. 2011-10-06 00:08:27 +00:00
llvm-c Adding back support for printing operands symbolically to ARM's new disassembler 2011-10-04 22:44:48 +00:00