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Author SHA1 Message Date
Ahmed Bougacha bfaddd999a [GlobalISel] Set the Selected MF property. 
None of GlobalISel requires the property, but this lets us use the
verifier instead of rolling our own "all instructions selected" check.

llvm-svn: 277484
 2016-08-02 16:49:25 +00:00
Ahmed Bougacha 24d0d4d2ec [GlobalISel] Set, require, and verify Legalized MF property. 
RegBankSelect and InstructionSelect run after the legalizer and
require a Legalized function: check that all instructions are legal.

Note that this should be in the MachineVerifier, but it can't use the
MachineLegalizer as it's currently in the separate GlobalISel library.
Note that the RegBankSelect verifier checks have the same layering
problem, but we only use inline methods so end up not needing to link
against the GlobalISel library.

llvm-svn: 277472
 2016-08-02 15:10:32 +00:00
Ahmed Bougacha 6756a2c953 [GlobalISel] Introduce an instruction selector. 
And implement it for AArch64, supporting x/w ADD/OR.

Differential Revision: https://reviews.llvm.org/D22373

llvm-svn: 276875
 2016-07-27 14:31:55 +00:00