swift

64e43224 - Driver: Don't imply -enable-anonymous-context-mangled-names with optimizations enabled, even if -g is used.

Driver: Don't imply -enable-anonymous-context-mangled-names with optimizations enabled, even if -g is used. The option -enable-anonymous-context-mangled-names prevents stripping of dead metadata to improve debuggability. But with optimizations enabled, we do a lot of dead code stripping which affects debuggability anyway. rdar://problem/48123944