Here is the code I've tested :
function Module(stdlib, foreign, heap) {
"use asm";
function bar(b) {
b = +b;
var a = 10.0;
return +(a*b);
}
// Export section.
return { bar: bar };
}
var code = "(function asm_module() { return function Module(stdlib,
foreign, heap) { \"use asm\"; function bar(b) { b = +(b); var a = 10.0;
return +(a*b); } return { bar: bar }; } }())";
$(function () {
var module1 = Module(window, {}, new ArrayBuffer(4 * 1024));
console.log(module1);
console.log(module1.bar(20));
console.log(code);
var eval_code = eval(code);
console.log(eval_code);
var module2 = eval_code(window, {}, new ArrayBuffer(4 * 1024));
console.log(module2);
console.log(module2.bar(20));
});
First "module1" gets correctly asm.js compiled (tested with Firefox 29
which print "Successfully compiled asm.js code"), second one created by
evaluating the "string" code does noes seems to to asm.js compile (no
"Successfully compiled asm.js code" in the console…)
Any idea? Thanks.
Stéphane
Le lundi 9 juin 2014 21:54:39 UTC+2, Alon Zakai a écrit :
>
> In principle yes, you can generate asm.js on the fly, and if you have "use
> asm" in the body then the browser has the option to try to optimize it
> using the asm.js type system (nothing special about asm.js here, of
> course). Do you see a warning or error in the firefox console, saying it
> succeeded or did not succeed?
>
> - Alon
>
>
>
> On Mon, Jun 9, 2014 at 9:34 AM, Stéphane Letz <[email protected] <javascript:>
> > wrote:
>
>> Hi,
>>
>> We have successfully ported our Faust (audio DSP) compiler to JS using
>> emscripten. We then added an "asm.js" backend in the Faust compiler so that
>> we can do:
>>
>> DSP source ==> Faust (in JS) ==> asm.js ==> evaluate and run the "asm.js"
>> DSP in the web (using the Web Audio API).
>>
>> This basically works, but the "asm.js" generated code does not seems to
>> be compiled in asm.js. It runs quite slow so I guess as regular JS code.
>> Maybe the generated code is still not correct (typing issues probably….)
>> but before going further, is dynamically compiling and evaluating asm.js
>> code actually possible?
>>
>> Thanks.
>>
>> Stéphane Letz
>>
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