[llvm] [XCOFF][obj2yaml] Support SymbolAlignmentAndType as 2 separate fields in YAML. (PR #76828)

[James Henderson via llvm-commits]

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@@ -525,11 +526,19 @@ bool XCOFFWriter::writeRelocations() {
 }
 
 void XCOFFWriter::writeAuxSymbol(const XCOFFYAML::CsectAuxEnt &AuxSym) {
+  uint8_t SymAlignAndType = AuxSym.SymbolAlignmentAndType.value_or(0);
+  if (AuxSym.SymbolType)
+    SymAlignAndType = (SymAlignAndType & ~XCOFFCsectAuxRef::SymbolTypeMask) |
+                      *AuxSym.SymbolType;
+  if (AuxSym.SymbolAlignment)
+    SymAlignAndType =
+        (SymAlignAndType & ~XCOFFCsectAuxRef::SymbolAlignmentMask) |
+        (*AuxSym.SymbolAlignment << XCOFFCsectAuxRef::SymbolAlignmentBitOffset);
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jh7370 wrote:

In similar cases in ELF yaml2obj, it is an error to specify both forms. I think the same should apply here (and be tested of course).

https://github.com/llvm/llvm-project/pull/76828