[PATCH] D86847: [Bitcode] Add BITCODE_SIZE_BLOCK_ID to encode the size of the bitcode

[Fangrui Song via Phabricator via llvm-commits]

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In D86847#2248353 <https://reviews.llvm.org/D86847#2248353>, @steven_wu wrote:

> I am a bit worry that linker might concatenate bitcode file with padding to achieve alignment requirement, etc. I guess you can create a termination block to mark the end but it is hard to seek the next start.

We can set the section alignment to 1 to avoid padding: (I rushed a bit, sorry: 6ae7b403c3e1aebcb825d3dd4777d3c1149d6d67 <https://reviews.llvm.org/rG6ae7b403c3e1aebcb825d3dd4777d3c1149d6d67>)


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