2 Commits

Author	SHA1	Message	Date
Stanislav Mekhanoshin	da1628eb67	[AMDGPU] Fixed hang during DAG combine ... SITargetLowering::reassociateScalarOps() does not touch constants so that DAGCombiner::ReassociateOps() does not revert the combine. However a global address is not a ConstantSDNode. Switched to the method used by DAGCombiner::ReassociateOps() itself to detect constants. Differential Revision: https://reviews.llvm.org/D58695 llvm-svn: 354926	2019-02-26 20:56:25 +00:00
Stanislav Mekhanoshin	871821f786	[AMDGPU] Ressociate 'add (add x, y), z' to use SALU ... Reassociate adds to collect scalar operands in a single instruction when possible. That will result in a scalar add followed by vector instead of two vector adds, thus better utilizing SALU. Differential Revision: https://reviews.llvm.org/D58220 llvm-svn: 354066	2019-02-14 22:11:25 +00:00