[clang] [llvm] [MC,llvm-readobj,yaml2obj] Support CREL relocation format (PR #91280)

[Fangrui Song via cfe-commits]

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@@ -321,6 +321,11 @@ class ELFFile {
 
   std::vector<Elf_Rel> decode_relrs(Elf_Relr_Range relrs) const;
 
+  uint64_t crelHeader(ArrayRef<uint8_t> Content) const;
+  using RelsOrRelas = std::pair<std::vector<Elf_Rel>, std::vector<Elf_Rela>>;
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MaskRay wrote:

Yes, `std::pair<` instead of an exclusive or is for convenience.

This is a type alias in a class (ELFFile) used by llvm-readobj. lld/ELF doesn't use this class, and the name collision should be fine.

https://github.com/llvm/llvm-project/pull/91280