[llvm] [ELF/RISCV] Add definitions for XCHERIOT1 non-standard relocations on RISCV. (PR #172414)

[Jessica Clarke via llvm-commits]

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@@ -30,3 +30,9 @@ ELF_RISCV_NONSTANDARD_RELOC(QUALCOMM, R_RISCV_QC_E_CALL_PLT, 195)
 // Andes Nonstandard Relocations
 // Calculation: S + A - P (10-bit PC-relative branch offset)
 ELF_RISCV_NONSTANDARD_RELOC(ANDES, R_RISCV_NDS_BRANCH_10,    241)
+
+// CHERIoT Nonstandard Relocations
+ELF_RISCV_NONSTANDARD_RELOC(XCHERIOT1, R_RISCV_CHERIOT_COMPARTMENT_HI, 220)
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jrtc27 wrote:

It's not an ABI requirement as they're just numbers in the ABI, but yes this does seem like an oversight in the toolchain conventions document.

https://github.com/llvm/llvm-project/pull/172414