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Author SHA1 Message Date
Jacques Pienaar fc13bdd2db [lanai] Manually match 0/-1 with R0/R1. 
Summary: Previously 0 and -1 was matched via tablegen rules. But this could cause problems where a physical register was being used where a virtual register was expected (seen in optimizeSelect and TwoAddressInstructionPass). Instead follow AArch64 and match in DAGToDAGISel.

Reviewers: eliben, majnemer

Subscribers: llvm-commits, aemerson

Differential Revision: https://reviews.llvm.org/D27171

llvm-svn: 288215
 2016-11-29 23:01:09 +00:00
Jacques Pienaar fcef3e4617 [lanai] Add Lanai backend. 
Add the Lanai backend to lib/Target.

General Lanai backend discussion on llvm-dev thread "[RFC] Lanai backend" (http://lists.llvm.org/pipermail/llvm-dev/2016-February/095118.html).

Differential Revision: http://reviews.llvm.org/D17011

llvm-svn: 264578
 2016-03-28 13:09:54 +00:00