[llvm] [Hexagon] Support .reloc asm directive (PR #183849)

[Alexey Karyakin via llvm-commits]

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@@ -81,6 +82,20 @@ class HexagonAsmBackend : public MCAsmBackend {
     return Result;
   }
 
+  std::optional<MCFixupKind> getFixupKind(StringRef Name) const override {
+    unsigned Type = llvm::StringSwitch<unsigned>(Name)
+#define ELF_RELOC(X, Y) .Case(#X, Y)
+#include "llvm/BinaryFormat/ELFRelocs/Hexagon.def"
+#undef ELF_RELOC
+                        .Case("BFD_RELOC_NONE", ELF::R_HEX_NONE)
+                        .Case("BFD_RELOC_16", ELF::R_HEX_16)
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quic-akaryaki wrote:

Good question, but I have added it too as it's documented in the ABI.

https://github.com/llvm/llvm-project/pull/183849