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Platform/Features/IonMonkey: Difference between revisions
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{{FeatureStatus | {{FeatureStatus | ||
|Feature name=Modern JIT Compiler for JavaScript (IonMonkey) | |Feature name=Modern JIT Compiler for JavaScript (IonMonkey) | ||
|Feature stage= | |Feature stage=Landed | ||
|Feature status=In progress | |Feature status=In progress | ||
|Feature version=Firefox 18 | |||
|Feature health=OK | |Feature health=OK | ||
}} | }} | ||
| Line 109: | Line 110: | ||
## Time: 4 weeks | ## Time: 4 weeks | ||
## Owner: <b>dvander</b> | ## Owner: <b>dvander</b> | ||
# '''Method Inlining''' | # <s>'''Method Inlining'''</s> | ||
## What: Inline methods | ## <s>What: Inline methods</s> | ||
## Dependencies: Bailouts, either profiling, ICs, or calls out to C++ | ## <s>Dependencies: Bailouts, either profiling, ICs, or calls out to C++</s> | ||
## Work involved: | ## <s>Work involved:</s> | ||
### Some heuristic to determine whether methods should be inlined (this can be totally bogus, but maybe better to start with simple methods). | ### <s>Some heuristic to determine whether methods should be inlined (this can be totally bogus, but maybe better to start with simple methods).</s> | ||
### Changing IonBuilder such that JSScripts bytecode parsing can be "stacked" so inner SSA graph is inlined. | ### <s>Changing IonBuilder such that JSScripts bytecode parsing can be "stacked" so inner SSA graph is inlined.</s> | ||
### Change M/LSnapshots to be nested, so snapshots in an inner frame all point to the same outer snapshot. | ### <s>Change M/LSnapshots to be nested, so snapshots in an inner frame all point to the same outer snapshot.</s> | ||
### Change snapshot encoding and frame reconstruction to support inlining. | ### <s>Change snapshot encoding and frame reconstruction to support inlining.</s> | ||
## Priority: Medium | ## <s>Priority: Medium</s> | ||
## Time: 3 weeks | ## <s>Time: 3 weeks</s> | ||
## Owner: <b>cdleary</b> | ## <s>Owner: <b>cdleary</b></s> | ||
# '''On-Stack Replacement''' | # <s>'''On-Stack Replacement'''</s> | ||
## What: Jump into JIT code at loop headers, possibly by profiling off-thread. | ## <s>What: Jump into JIT code at loop headers, possibly by profiling off-thread.</s> | ||
## Work involved: | ## <s>Work involved:</s> | ||
### Explore ways to monitor hotness of JIT code. | ### <s>Explore ways to monitor hotness of JIT code.</s> | ||
### Implement the ability to jump into Ion-compiled code at loop headers, possibly by inserting special OSR nodes in the IR. | ### <s>Implement the ability to jump into Ion-compiled code at loop headers, possibly by inserting special OSR nodes in the IR.</s> | ||
## Priority: Medium | ## <s>Priority: Medium</s> | ||
## Time: | ## <s>Time: 4 weeks</s> | ||
## Owner: <b>sstangl</b> | ## <s>Owner: <b>sstangl</b></s> | ||
# '''ARM Port''' | # '''ARM Port''' | ||
## What: Port IonMonkey to ARM | ## What: Port IonMonkey to ARM | ||
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|Feature engineering team=JavaScript | |Feature engineering team=JavaScript | ||
}} | }} | ||
{{FeatureTeamStatus}} | {{FeatureTeamStatus | ||
|Feature security status=sec-review-unnecessary | |||
|Feature security health=OK | |||
}} | |||