Javascript:SpiderMonkey:2013Projects

Projects Under Consideration

• Generational Garbage Collection, Terrence Cole/Steve Fink/Jon Coppeard, https://wiki.mozilla.org/Javascript:SpiderMonkey:ProjectGenerationGarbageCollection
• OdinMonkey (Asm.js), Luke/Sean/Hannes, https://wiki.mozilla.org/Javascript:SpiderMonkey:OdinMonkey
• JavaScript Parrellelism, Sean and Luke
  • Parallel JS, Mozilla Research
  • Parallel Arrays
  • ArrayBuffer sharing
  • Thread support
• EcmaScript 6 Features, Jason Orendorff, https://wiki.mozilla.org/ES6_plans
  • Modules - Edy & Jason
• EcmaScript 6 Testing, Jeff Walden, https://wiki.mozilla.org/User:Waldo/ES6_testing
• Baseline, Kannan/Jan
  • Optimize generators and proxies in baseline
  • Make Ion use Baseline information
• BinaryData: bug 578700, Nikhil Marathe
• Internationalization, Jeff Walden
  • Write up Norbert's work and API - https://wiki.mozilla.org/User:Waldo/Internationalization_API
• Memory Usage
  • Lazy Byte Code Analysis, Brian Hackett, bug 678037 (RESOLVED FIXED)
  • Script Analysis, Kannan Vijayan, bug 864502 (RESOLVED FIXED)
• ARM, Marty Rosenberg
  • Assembly Buffer changes - needed for asm.js
  • Add support for all 32 double registers
  • thumb2 backend - http://en.wikipedia.org/wiki/ARM_architecture#Thumb-2
    • new assembler for thumb2
  • Add a peephole pass: bug 734830
  • Support for operand2 and fused-multiply-add: bug 777659
  • Support for pre and post increment
  • Front-end on top of the macro assembler to get yarr to use it (will likely generate better code)
• Type Inference, Brian Hackett
  • Reduce TI memory usage bug 804676 (RESOLVED FIXED)
• FirefoxOS
  • Partner benchmark optimizations
  • B2G Optimizations, Nicolas
• DevTools, Jim Blandy
  • Debugability of full stack
  • JSD2 Trace Profiler bug 797876
  • Profiler
    • Crash Bugs - Typically seen while toggling the profiler and/or private browsing
      • bug 802798
      • bug 836938
      • bug 832812 (RESOLVED FIXED)
      • bug 788495 (RESOLVED INVALID because crash was in removed JM code)
    • prototype/static function name bug 838265 (RESOLVED WORKSFORME)
    • multithreaded bug 863703
    • Column info bug 785922
• Performance
  • Faster DOM <==> JIT Interaction
  • Shumway and IonMonkey JIT code-gen caching, Till Schneidereit
    • Lazy function cloning - if compiled in one apartment clone to others instead of re-compiling
    • Disk Caching - investigate disk caching for functions
    • Re-Lazificiation of functions - memory savings for cold byte code (JITs already do this for codegen)
• Hygiene
  • Remove JaegerMonkey code from the tree bug 857845 (RESOLVED FIXED in Firefox 24)