[PATCH v4] RISC-V: build: Allow LTO to be selected

[patchwork-bot+linux-riscv at kernel.org]

Hello:

This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer at rivosinc.com>:

On Tue, 17 Oct 2023 15:21:04 -0700 you wrote:
> From: Wende Tan <twd2.me at gmail.com>
> 
> Allow LTO to be selected for RISC-V, only when LLD >= 14, since there is
> an issue [1] in prior LLD versions that prevents LLD to generate proper
> machine code for RISC-V when writing `nop`s.
> 
> To avoid boot failures in QEMU [2], '-mattr=+c' and '-mattr=+relax'
> need to be passed via '-mllvm' to ld.lld, as there appears to be an
> issue with LLVM's target-features and LTO [3], which can result in
> incorrect relocations to branch targets [4]. Once this is fixed in LLVM,
> it can be made conditional on affected ld.lld versions.
> 
> [...]

Here is the summary with links:
  - [v4] RISC-V: build: Allow LTO to be selected
    https://git.kernel.org/riscv/c/021d23428bdb

You are awesome, thank you!
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