[llvm] [RISCV] Mark More Relocs as Relaxable (PR #151422)

[Fangrui Song via llvm-commits]

MaskRay wrote:

I would prevent JAL from being assembler-relaxed to QC_E_JAL, resolving the issue. There is no interference for users who don't use the extension.

Instead, the compiler should emit qc.e.jal when the displacement might exceed JAL's range, and the linker should handles QC_E_JAL->JAL accordingly.

https://github.com/llvm/llvm-project/pull/151422