Asm.js: a strict subset of js for compilers

Re:Asm.js: a strict subset of js for compilers – working draft by azakai on Friday February 15, 2013 @02:23PM (#5227947)

This is lower-level. It is JavaScript, but really it is a subset that implements low-level operations. In fact lower than PNaCl, this is past the LLVM IR level.

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Re:Asm.js: a strict subset of js for compilers – working draft by nnethercote on Friday February 15, 2013 @07:30PM (#5229710)

I bet if you rewrote the spec to use a different syntax, and didn't mention that it (syntax aside) is a subset of JS, people would be falling over themselves to say "finally, proper bytecode for the web!"

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Re:Asm.js: a strict subset of js for compilers – working draft by dochtman on Friday February 15, 2013 @05:07PM (#5228964)

So will there be code to turn LLVM IR into asm.js stuff? That would be pretty awesome (and a nice way to make Emscripten more accessible to other languages?).

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Re:Asm.js: a strict subset of js for compilers – working draft by azakai on Saturday February 16, 2013 @03:13AM (#5230859)

> So will there be code to turn LLVM IR into asm.js stuff?

There already is, that is precisely what emscripten does when run with the ASM_JS=1 flag set. Emscripten's input is LLVM IR, not C or C++. (Although, it has been mostly tested on LLVM IR generated from clang that was given C or C++.)

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Re:Asm.js: a strict subset of js for compilers – working draft by jevinskie on Friday February 15, 2013 @06:46PM (#5229499)

Emscripten is trying to move their backend into LLVM which would accomplish the same thing.

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