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

[Nick Desaulniers]

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/