View source for Javascript:SpiderMonkey:OdinMonkey

== Active ==
* Heap resizing: {{bug|965880}}
* Implement SIMD proposal ({{bug|894105}}) and incorporate into asm.js ({{bug|992267}})
* Continued SharedArrayBuffer prototyping in SpiderMonkey and Emscripten
* Optimize sin/cos: {{bug|967709}}

== Planned next projects ==
* PGAOT (Profile-Guided Ahead-of-Time Compilation): 
** Create a baseline asm.js compiler: super-fast codegen but with full static type info
** Allow individual functions in an asm.js module to choose full or baseline (via "use" pragma on individual functions)
** Allow Emscripten users to change default (full or baseline), hand-annotate, or do profiling to place pragmas.
* Zero-cost exception handling: {{bug|1065089}}
* Optimize calls into ({{bug|962641}}), out of ({{bug|1000632}}), and between ({{bug|982036}}) asm.js modules.
* Remove async-script requirement for asm.js caching: 
** Maybe remove it from QuotaManager: {{bug|961057}}
** More likely, just take (large) script parsing off the main thread.
* Fix asm.js caching browser interop ({{bug|1047098}}, {{bug|1047105}}

== Possible further optimization projects ==
* Further improve load-time:
** Parse and AOT compile while downloading: {{bug|1061886}}
** Move code generation into the parallel compilation tasks: {{bug|959263}}
** asm.js parser: Avoid building an intermediate parse tree; type check during recursive descent {{bug|854061}}
* Backend optimizations:
** Use callee-saved registers: {{bug|985065}}
** Heap access: {{bug|986981}}, {{bug|870743}}, {{bug|897425}}, {{bug|915157}}, {{bug|983131}}, {{bug|865523}}, {{bug|984478}}, {{bug|1056027}}
** Optimize add-with-overflow: {{bug|1043365}}
** Optimize min/max: {{bug|1060635}}
** For asm.js->asm.js calls on x86, pass the return value via xmm register, not fp stack
** Remove branching from double-to-int conversion using signal handler (see also {{bug|818750}})

== Possible asm.js extensions that don't require new JS features ==
* Extend asm.js to allow proper tail calls for all return types and do the tail-call optimization
* Effectively support 'goto' (even computed 'goto') by formalizing a pattern of while+switch that gets compiled as if it was goto
* Extend asm.js to better support dynamically linking asm.js modules (a mutable, callable array argument to asm.js module, like the PLT)
* Add DataView to avoid the alignment mask on asm.js heap accesses (this is mostly a problem of DataView being slow in all browsers)

== Proposed future JS features that would be useful to asm.js ==
* ArrayBuffer.prototype.discard ({{bug|855669}}): to allow madvise(DONTNEED)
* Typed Objects: ([http://wiki.ecmascript.org/doku.php?id=harmony:typed_objects Typed Objects])
** This feature comes with float32/uint64/int64 value types, which would be useful as scalar types in asm.js.
** Formalize Typed Object "class declarations" in asm.js which could make asm.js a target for JVM/CLR/TypeScript (and allow these languages to reuse the builtin JS GC)
* FunctionPromise: {{bug|854627}}, or perhaps just make some functions (asm.js, no-free-variables) structured-cloneable
* Add way to programmatically observe whether asm.js validated: {{bug|952847}}

== Usability improvements ==
* Print warning on out-of-bounds heap access: {{bug|879891}}
* Add about:config option to check for and emit warning on unaligned heap access

== Current asm.js spec bugs ==

https://github.com/dherman/asm.js/issues?state=open

== Logo ==
[[File:Odinmonkey800.jpg]]<br>
Credit to John Howard