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Author SHA1 Message Date
Matt Arsenault f54dc2384d DAGCombiner: Assume invariant load cannot alias a store 
The motivation is to allow GatherAllAliases / FindBetterChain
to not give up on dependent loads of a pointer from constant memory.

This is important for AMDGPU, because most loads are pointers
derived from a load of a kernel argument from constant memory.

llvm-svn: 241948
 2015-07-10 22:17:40 +00:00