[llvm] [DataLayout] Add byte specification (PR #106536)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

> > > This change looks reasonable to me. Please start a fresh RFC thread for it.
> > 
> > 
> > There is a thread I started two years ago specifically for discussing the support in data layout: https://discourse.llvm.org/t/byte-width-specification-in-data-layout-string/62202 It provides more context and is not overloaded with comments. I'll try to revive it instead of cloning.
> 
> I don't think this is going to be fruitful. To move forward with any part of this, there needs to be a strong, high-level consensus to move forward with middle-end support for non-8-bit bytes. Your RFC should outline, at least in broad strokes, all the changes that will be needed to support this (and what will / won't be supported and why) and not focus on just details of DataLayout.

OK, sure. I'll try to have it prepared by the end of the next week.


https://github.com/llvm/llvm-project/pull/106536