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2 Commits

Author SHA1 Message Date
Tim Northover
ea26cb1f48 GlobalISel: implement legalization pass, with just one transformation. 
This adds the actual MachineLegalizeHelper to do the work and a trivial pass
wrapper that legalizes all instructions in a MachineFunction. Currently the
only transformation supported is splitting up a vector G_ADD into one acting on
smaller vectors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276461 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-07-22 20:03:43 +00:00
Tim Northover
6f08925c54 GlobalISel: implement Legalization querying framework. 
This adds an (incomplete, inefficient) framework for deciding what to do with
some operation on a given type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276184 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-07-20 21:13:29 +00:00