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Commit da1628eb authored by Stanislav Mekhanoshin's avatar Stanislav Mekhanoshin
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[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
parent ddc181d2
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