dschuff added a subscriber: tlively.
dschuff added a comment.

> I don't think it will change anything in that code since 
> `__BIGGEST_ALIGNMENT__ >= XNN_ALLOCATION_ALIGNMENT` will still hold true both 
> before and after this change (XNN_ALLOCATION_ALIGNMENT == 4 on wasm)

Right, that check causes XNN_ALLOCATION_ALIGNMENT to be ignored in favor of 
using clang's `_builtin_alloca()` which will be changed by this CL.
I seem to recall that @tlively and I spent a bunch of time with XNNpack chasing 
down some kind of subtle error that I suspect had to do with alignment, but 
maybe he remembers that better than I do.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151820/new/

https://reviews.llvm.org/D151820

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