llvm-mirror/utils
Jakob Stoklund Olesen a2f0c34e41 Replace the SubRegSet tablegen class with a less error-prone mechanism.
A Register with subregisters must also provide SubRegIndices for adressing the
subregisters. TableGen automatically inherits indices for sub-subregisters to
minimize typing.

CompositeIndices may be specified for the weirder cases such as the XMM sub_sd
index that returns the same register, and ARM NEON Q registers where both D
subregs have ssub_0 and ssub_1 sub-subregs.

It is now required that all subregisters are named by an index, and a future
patch will also require inherited subregisters to be named. This is necessary to
allow composite subregister indices to be reduced to a single index.

llvm-svn: 104654
2010-05-26 00:28:19 +00:00
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TableGen Replace the SubRegSet tablegen class with a less error-prone mechanism. 2010-05-26 00:28:19 +00:00
unittest
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