asavonic added a comment.

In D100591#2711433 <https://reviews.llvm.org/D100591#2711433>, @t.p.northover 
wrote:

> On big-endian targets the rounding up to 64-bits (specified in the AAPCS) is 
> significant; it means that structs get passed in the high bits of `x0` rather 
> than low. E.g. https://godbolt.org/z/6v36oexsW. I think this patch would 
> break that.

Thanks a lot! I've disabled the change for big-endian AArch64 targets.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100591/new/

https://reviews.llvm.org/D100591

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