Status: Assigned
Owner: [email protected]
CC: [email protected], [email protected], [email protected],
[email protected]
Labels: Type-Bug Priority-Medium
New issue 4203 by [email protected]: Validate asm.js code and use
type information
https://code.google.com/p/v8/issues/detail?id=4203
We should implement asm.js validation so that we can use the full type
information available in asm.js modules.
SPEC
http://asmjs.org/spec/latest/
SUMMARY
asm.js programs provide machine level typing information for code compiled
from C/C++. While a substantial portion of this typing information can be
discovered by V8's generic typing code, some of the information
(inter-function) is non-trivial to extract in a general way. Explicit
validation will allow us to get it all.
COMPATIBILITY RISK
Mozilla implements this feature. Microsoft has announced support as well.
The specification is not final, however, so there is some danger that
multiple variants will need to be supported in the wild. The specification
conflates parse and AST time information, which may make it difficult to
map to V8 precisely.
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