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Fill out MAY_REQUIRE_REALLOC for more types#13158

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alexcrichton wants to merge 1 commit intobytecodealliance:mainfrom
alexcrichton:may-require-alloc
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Fill out MAY_REQUIRE_REALLOC for more types#13158
alexcrichton wants to merge 1 commit intobytecodealliance:mainfrom
alexcrichton:may-require-alloc

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This is an relatively impactful optimization to the performance of futures/streams when transferring data from the host to the guest, so fill this out for more types get the optimization to fire more. This was found during some improvement of wasi-libc where some code paths weren't getting hit, but they should,, and this is required to have that work out.

This is an relatively impactful optimization to the performance of
futures/streams when transferring data from the host to the guest, so
fill this out for more types get the optimization to fire more. This was
found during some improvement of wasi-libc where some code paths weren't
getting hit, but they should,, and this is required to have that work out.
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