[lld] [LLD][ELF][AArch64] Add support for SHF_AARCH64_PURECODE ELF section flag (3/3) (PR #125689)

[Csanád Hajdú via llvm-commits]

Il-Capitano wrote:

> Personally I think it would be better to separate out the execute-only-report into a separate patch. I think the basic support is already there and could be committed. We could also generalise the report to include ARM if it were committed separately.

OK, I'll do that.

https://github.com/llvm/llvm-project/pull/125689