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NEWS.md

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NEWS.md

This file contains information about major updates since 1.0.

Version 3

Version 3 is a greatly slimmed repository, focusing just on those tools that are relevant for modern Julia development. If you are still using old tools, you should stick with SnoopCompile 2.x.

Major changes:

  • @snoopi_deep has been renamed @snoop_inference
  • @snoopr has been renamed @snoop_invalidations.
  • @snoopl has been renamed @snoop_llvm.
  • The old @snoopc has been deleted. Its functionality was largely subsumed into julia --trace-compile.
  • @snoopi has been deleted, as @snoopi_deep provided more comprehensive information and is available on all modern Julia versions.
  • SnoopCompileBot was deleted in favor of CompileBot
  • SnoopPrecompile was deleted because it is now PrecompileTools
  • JET, Cthulhu, PrettyTables, and PyPlot are all integrated via package extensions. As a consequence, users now have to load them manually.

Version 1.1

This version implements major changes in how parcel works on the output of @snoopi:

  • keyword-supplying methods are now looked up as Core.kwftype(f) rather than by the gensymmed name (var"#f##kw" or getfield(Base, Symbol("#kw##sum")))
  • On Julia 1.4+, SnoopCompile will write precompile directives for keyword-body functions (sometimes called the "implementation" function) that look them up by an algorithm that doesn't depend on the gensymmed name. For example, 
    let fbody = try __lookup_kwbody__(which(printstyled, (String,Vararg{String,N} where N,))) catch missing end
  if !ismissing(fbody)
      precompile(fbody, (Bool,Symbol,typeof(printstyled),String,Vararg{String,N} where N,))
  end
end
    For files that have precompile statements for keyword-body functions, the __lookup_kwbody__ method is defined at the top of the file generated by SnoopCompile.write.
  • Function generators are looked up in a gensym-invariant manner with statements like 
    precompile(Tuple{typeof(which(FuncKinds.gen2,(Int64,Any,)).generator.gen),Any,Any,Any})
  • Anonymous functions and inner functions are looked up inside an isdefined check, to prevent errors when the precompile file is used on a different version of Julia with different gensym numbering.

Other changes:

  • A convenience utility, timesum, was introduced (credit to aminya)