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Author SHA1 Message Date
Tim Northover 33b07d6725 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.

llvm-svn: 276461
 2016-07-22 20:03:43 +00:00
Quentin Colombet 8e8e85c19f [GlobalISel] Add the skeleton of the RegBankSelect pass. 
This pass is reponsible for assigning the generic virtual registers to register
banks.

llvm-svn: 265440
 2016-04-05 19:06:01 +00:00
Quentin Colombet 39293d3aaa [GlobalISel] Introduce initializer method to support start/stop-after features. 
llvm-svn: 262896
 2016-03-08 01:38:55 +00:00