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[llvm] Add new DI Flag IsZeroSize for D101237 [[no_unique_address]]
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Authored by jankratochvil on Jun 9 2021, 8:00 AM.

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aprantl
deadalnix
Summary

It is non-trivial as I have tried to reuse the ReservedBit4 so posting as a separate patch for D101237.

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jankratochvil created this revision.Jun 9 2021, 8:00 AM
jankratochvil requested review of this revision.Jun 9 2021, 8:00 AM

DICompositeType has a "SizeInBits" field - can that be used to specify a size of 0, instead of adding a new flag to convey this?

In C and Swift we express zero-sized types by just setting their bitsize to 0. Why doesn't this work for OCaml?