[6.2.1][IRGen] Fix computation of spare bits for fixed arrays #84008
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Contributor
drexin
commented
Aug 29, 2025
- Explanation: Previously all bits after the spare bits of the first element were marked as spare bits. This caused enum tags to be stored in bits used by the payload.
- Scope: Spare bits for FixedArray
- Issues: rdar://159143492
- Original PRs: [IRGen] Fix computation of spare bits for fixed arrays #83922
- Risk: This strictly limits the bits that are considered for spare bits. There should be no risk.
- Testing: Added regression tests.
- Reviewers: @jckarter
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@swift-ci test |
rdar://159143492 Previously all bits after the spare bits of the first element were marked as spare bits. This caused enum tags to be stored in bits used by the payload.
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