leaningtech-dev team mailing list archive

[Alessandro Pignotti <1284811@xxxxxxxxxxxxxxxxxx>]

Up to now we have been focused on producing correct code and we just
started working to optimize the generated code from the size point of
view. You can use a regular JavaScript minimizer to reduce the code
size. In the future duetto will directly generate minimized code.

Duetto already uses static analysis to only compile what is actually
used. The part of the standard library that you see is the one which
initializes C++ iostream functionalities and it's always included and
executed even on regular platform. We plan to add a smarter analysis to
handle this case as well.

About the string code, you've spotted an optimization that we have
already planned to do. Generally speaking expect improvements on this
area since improving code side (and performance) is one of our focus now
that duetto is mature enough to be used on real world code.

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https://bugs.launchpad.net/bugs/1284811

Title:
  Huge output files

Status in Duetto: C++ for the Web:
  Confirmed

Bug description:
  For your example program dom1 that is compiled with :
  clang++ -O3 -target duetto dom1.cpp -o test1.js

  I got from 419 bytes of original code 2.03 MB of compiled javascript.
  That seems to me a bug.

  It looks like that the standard library code is included in the
  output. It should be posible to get rid of it by using static analysis
  and dead code elemination.

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