llvm-objdump does not print values for unknown instructions or relocations

[petrhosek]

When encountering unrecognized RISC-V instructions or relocations, llvm-objdump prints the following:

      8c: 5b e1 e5 4c  	<unknown>
			0000008c:  Unknown	.L19

It'd be more helpful if llvm-objdump output would include the underlying value. This is especially useful when the binary contains vendor extensions that are not recognized by upstream LLVM.

[llvmbot]

@llvm/issue-subscribers-tools-llvm-objdump