Bug 148440
| Summary: | DFG::AbstractHeap should be able to distinguish between heap locations that are user-observable and heap locations that are VM-internal | ||
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| Product: | WebKit | Reporter: | Filip Pizlo <fpizlo> |
| Component: | JavaScriptCore | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | ||
| Priority: | P2 | ||
| Version: | Other | ||
| Hardware: | All | ||
| OS: | All | ||
Filip Pizlo
If you write to a VM-internal heap, it shouldn't clobber exit, because the user won't know that you had done it.
Note that it's not as simple as that. Depending on how you define "VM-internal", a VM-internal write might still put the system in a state where OSR exit is invalid even though the write was not user-observable. So, it's not entirely obvious that this is a good idea, but it's worth thinking about.
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