AObench with Emscripten
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The document discusses emscripten, a compiler that converts C/C++ to JavaScript, and aobench, an ambient occlusion benchmark. It presents results showing a raytracing demo taking 12.8 seconds to run in Chrome and 82.92 seconds in Firefox. It also briefly mentions using the Closure Compiler to optimize the generated JavaScript and compiling to LLVM IR before emitting JavaScript.
![double *pixels = new double[3 * x];
@llvm.umul.with.overflow.i64
->
Monday, January 24, 2011](https://image.slidesharecdn.com/emscripten-110124074550-phpapp02/85/AObench-with-Emscripten-9-320.jpg)
![js code
• JS
var args = arguments;
// arguments .
// var args = []
Monday, January 24, 2011](https://image.slidesharecdn.com/emscripten-110124074550-phpapp02/85/AObench-with-Emscripten-11-320.jpg)
AObench with Emscripten
- 1. emscripten aobench Monday, January 24, 2011
- 2. Agenda • emscripten • aobench • • Performance • Monday, January 24, 2011
- 3. emscripten • C/C++ -> JavaScript compiler • LLVM IR JS • clang, llvm-gcc C/C++ LLVM IR . Monday, January 24, 2011
- 4. aobench • AmbientOcclusion , CG • . Monday, January 24, 2011
- 5. • raytrace . • clang LLVM IR • emscripten LLVM IR -> JS • web Monday, January 24, 2011
- 6. • • compile , js . • ... • Firebug . Monday, January 24, 2011
- 7. include file • #include “emscripten.h” • C/C++ Monday, January 24, 2011
- 8. • rand() . • • -> ( ?) xorshift Monday, January 24, 2011
- 9. double *pixels = new double[3 * x]; @llvm.umul.with.overflow.i64 -> Monday, January 24, 2011
- 10. optimize • opt -std-compile-opts LLVM IR . • ... Monday, January 24, 2011
- 11. js code • JS var args = arguments; // arguments . // var args = [] Monday, January 24, 2011
- 12. Performance Chrome Firefox 90 • Chrome 12.8 secs 67.5 • Firefox 82.92 secs 45 • Safari ... 22.5 0 secs Monday, January 24, 2011
- 13. Closure compiler • Closure compiler(JS -> JS optimizer) JS . Monday, January 24, 2011
- 14. • JS JS . • C JS . • LLVM IR • lowlevel Monday, January 24, 2011