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

[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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diggerlin wrote:

if I understand correct, you want to priority the symbols which has the same address, can you do something like  https://github.com/llvm/llvm-project/blob/main/llvm/include/llvm/MC/MCDisassembler/MCDisassembler.h#L28 
and 
https://github.com/llvm/llvm-project/blob/main/llvm/lib/MC/MCDisassembler/MCDisassembler.cpp#L85

it will le the Symbolize has the same priority behaviors' as llvm-objdump for xcoff symbols ?

I do not think in XCOFF , when priority the same address symbols, we care about the size of the symbol,  we care about the  `symbol type` and `storage mapping class`. 

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