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Add limits to allocatable registers - #239

Merged

cfallin merged 11 commits into

bytecodealliance:mainfrom

abrown:limit-constraints

Sep 23, 2025

Commits on Sep 18, 2025
- Add `OperandConstraint::Limit`
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- Check that are operands are allocated within their `Limit`
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- Ensure all fixed registers fit within their `Limit`
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- Transform an limit into `Requirement::Limit`
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- Merge cached limits on `LiveBundle`s
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- Detect when limits prevent allocation
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- Disable limits in fastalloc for now
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- Constrain iteration of registers with a `Limit`
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- Recalculate cached limits
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Commits on Sep 19, 2025
- Only cache limits as `u8`
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  6690122
- Prevent over-large `OperandConstraint::Limit`s
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