On Tue, Nov 5, 2024 at 11:18 AM Florian Weimer <fwei...@redhat.com> wrote: > > * David Brown via Gcc: > > > I would have thought it would be better as part of the compiler. For > > each compilation unit, you generate one or more data sections > > depending on the variable initialisations, compiler options and target > > (.bss, .data, .rodata, .sbss, etc.). If the compiler has > > "-align-object-data-section=64" in effect, then you could add ".align > > 64" to the start and the end of each section. As far as I can see, > > that would give the effect the OP is looking for in a simple manner > > that can also be different for different translation units in the same > > program (which would be hard to do with a linker flag). And if this > > is a flag in gcc, then it will work for any ld-compatible linker > > (gold, mold, etc.). > > I agree it's more of a compiler flag from an implementation perspective. > There's another aspect that supports this: I don't think we want to do > this for data sections that we use to implement vague linkage. Bumping > the alignment for them could be really wasteful and probably not what > the programmer intends. >
Huh, this fell to the wayside on my end due to $reallife. Anyhow I have 0 opinion where this should be implemented, I'm merely interested in the feature showing up. I believe I made a good enough case to justify its existence, but I don't know if anyone can be bothered to follow through with it -- I for one have 0 cycles spare for this one. That said someone(tm) picking it up would be most welcome. :) Cheers, -- Mateusz Guzik <mjguzik gmail.com>
