Emscripten is meant to translate ANY LLVM IR code to javascript and it should work (as I belive). I've tried to compile 'hello wrold' Haskell program to JS using Emscripten but I faced a problem, that in generated LLVM IR code there is no C-like main function (https://github.com/kripken/emscripten/issues/500) so there has to be a runtime library that has to be linked and will run the code - is this "RTS" or something else? If its RTS I understeand I should compile it to javascript and then provide it as a library to emscripten? Do you have a working RTS js version?
I want to simply try emscripten and see how it performs on such GHC generater LLVM IRs. 2013/7/2 Luite Stegeman <stege...@gmail.com> > On Tue, Jul 2, 2013 at 4:38 PM, B B <blackbox.dev...@gmail.com> wrote: > >> Thank you for all the replies. >> Luite Stegeman - I was thinking that the LLVM IR code is optimized >> already or you can run LLVM IR optimization passes to get rid of such >> things. I think compiling with ghc -fllvm generates LLVM bitcode and then >> you can simply run emscripten on it to get Javascript - and it should work >> as expected. >> > > Most of the optimizations that GHC does are on Core, so you also get those > if you use Core or STG as the source. You do miss out on the later > optimization passes (GHC optimizes Cmm with Hoopl, and LLVM optimizes > again). We implement this in GHCJS ourselves, optimizing the generated > JavaScript. > > Since GHC itself is written in Haskell, it would be a good goal to compile > simple Haskell programs first and make sure that the RTS is working (you'll > need to compile the Cmm and C RTS files to LLVM). You can try to get the > GHC Testsuite [1] running. The GHCJS testsuite [2] might also be useful, it > contains much of the GHC Testsuite and a runner program that checks the > JavaScript results against native Haskell. > > Like i said in the previous post, the generated code is a bit weird: > stacks are allocated dynamically, functions never return, there are only > tail calls. Emscripten might have a hard time with this. > > [1] https://github.com/ghc/testsuite > [2] https://github.com/ghcjs/ghcjs/tree/master/test >
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