[MLIR][LLVM] Only disallow inlining for selected function attributes.
This loosens the requirement of no passthrough function attribute being
present to checking for specific attributes that prevent inlining. Since
these attributes are no longer strictly passthrough, they should
eventually be upgraded to some form of addressable attributes.
Drops the expensive StringSwitches over call and function attributes in
favor of selectively disallowing attributes that prevent inlining
(similiar to the LLVM inliner), thereby moving to a less conservative
approach.
Reviewed By: gysit
Differential Revision: https://reviews.llvm.org/D144104