[PATCH] D28404: IRGen: Add optnone attribute on function during O0

Mon Jan 9 13:53:50 PST 2017

probinson added a comment.

In https://reviews.llvm.org/D28404#640182, @mehdi_amini wrote:

> In https://reviews.llvm.org/D28404#640178, @mehdi_amini wrote:
>
> > Also, that's not practicable: what if I have an LTO static library for which I don't have the source, now if I build my own file with -O0 -flto I can't link anymore.
>
>
> Also: LTO is required for some features likes CFI. There are users who wants CFI+O0 during development (possibly for debugging a subcomponent of the app).

Sorry, you lost me.  CFI is part of DWARF and we do DWARF perfectly well without LTO (and at O0).

https://reviews.llvm.org/D28404