[IRGen] Add metadata pack markers for destroys. #67493
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In preparation for adding addition unary instructions which `mayRequirePackMetadata`, group the instructions which already may produce pack metadata depending on their single operand's type together.
Destroys of values whose types feature a pack may require allocating the pack on-stack. Thanks to @slavapestov for the test case. rdar://112792831
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@swift-ci please test |
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Destroys of values whose types feature a pack may require allocating the pack on-stack.
Thanks to @slavapestov for the test case.
rdar://112792831