[lld] [lld] Add thunks for hexagon (PR #111217)

[Fangrui Song via llvm-commits]

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@@ -402,6 +402,21 @@ class AVRThunk : public Thunk {
   void addSymbols(ThunkSection &isec) override;
 };
 
+// Hexagon CPUs need thunks for <<FIXME TBD>>
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MaskRay wrote:

Please fix FIXME

https://github.com/llvm/llvm-project/pull/111217