I recently started doing a bit of optimisation work on the hashing/cryptography classes in mono. When working on the managed SHA256 class[1], i noticed that mono isn't inlining what i'd consider some *very* simple methods.
The helper methods which do the bitshifting (Ro0, Ro1, Ch, Maj etc) aren't inlined! Each of these methods is only called once in the code. By manually inlining those method calls, performance increased significantly - about 70%. Why isn't mono inlining these methods? Can mono be made inline these? Alan. [1] http://anonsvn.mono-project.com/viewcvs/trunk/mcs/class/corlib/System.Security.Cryptography/SHA256Managed.cs?rev=46462&view=markup
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