I finally managed to compile some D code to asm.js, using Emscripten.

It had been done by one dude several years ago, but some changes in the inner workings of Emscripten (the introduction of fastcomp, also probably combined with changes in the way LDC generates LLVM bitcode) made it impossible to use the same technique.

You can play a minimalistic demo:

The source code + toolchain deployment scripts are available on github:

And a blogpost explaining the technique is available here:
(Spoiler: at some point, it involves lowering the source code back to C)

Please let me know what you think!

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