[PATCH v3] RISC-V: Enable dead code elimination

[Conor Dooley]

On Tue, Jun 20, 2023 at 01:17:26PM -0700, Palmer Dabbelt wrote:
> On Tue, 20 Jun 2023 13:13:06 PDT (-0700), ndesaulniers at google.com wrote:
> > On Wed, May 17, 2023 at 04:29:36PM +0800, Zhangjin Wu wrote:
> > > Select CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION for RISC-V, allowing
> > > the user to enable dead code elimination. In order for this to work,
> > > ensure that we keep the alternative table by annotating them with KEEP.
> > > 
> > 
> > Just cross referencing the report from Palmer against v2; I see orphan
> > section warnings from the linker related to the EFI stub when building
> > allmodconfig with this patch applied.
> > 
> > v2: thread for reference.
> > https://lore.kernel.org/linux-riscv/CAKwvOdmsgMN5oQpDLh12D0X-CfQDtHC-EtxHcBnADkhnyitMKQ@mail.gmail.com/
> 
> Sorry for replying to the v2, I'm marking that as superseeded in patchwork.
> IIUC it is a real issue on your end too?  I'm also not 100% sure about the
> hang, I just let LLD cook for about 10 minutes before I noticed it was still
> running and posted.

Repeating myself for the sake of the archives or w/e, two different
submitters with differing version numbers. The v2 from Jisheng is more
recent than the v3 here from Zhangjin, they agreed in this mail thread
to merge their work.

Cheers,
Conor.
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