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52c08fdb90
FastISel has a fixed set of virtual functions that are overridden by the tablegen-generated code for each target. These functions are distinguished by the kinds of operands, e.g., register + immediate = "ri". The FastISel emitter has been blindly emitting functions with different combinations of operand kinds, even for combinations that are completely unused by FastISel, e.g., "fastEmit_rrr". Change to filter out functions that will be irrelevant for FastISel and do not bother generating the code for them. Also add explicit "override" keywords for the virtual functions that are overridden. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218838 91177308-0d34-0410-b5e6-96231b3b80d8