[llvm] [XCOFF] make related SD symbols as isFunction (PR #69553)

[James Henderson via llvm-commits]

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@@ -83,8 +83,30 @@ class SymbolizableObjectFile : public SymbolizableModule {
     // getNameFromSymbolTable.
     uint32_t ELFLocalSymIdx;
 
+    // Both are false if this is not a XCOFF local symbol.
+    bool IsXCOFFSDSymbol;
+    bool IsXCOFFLDSymbol;
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jh7370 wrote:

Is it possible for these to both be true? If not, perhaps an enum, something like `XCOFFSymbolClass`, would be more appropriate? In fact, an enum might be better in general, to avoid having to keep track of multiple different fields.

https://github.com/llvm/llvm-project/pull/69553