[llvm] [GOFF] Emit symbols for functions. (PR #144437)

[Fangrui Song via llvm-commits]

================
@@ -37,6 +55,82 @@ void MCGOFFStreamer::changeSection(MCSection *Section, uint32_t Subsection) {
   }
 }
 
+void MCGOFFStreamer::emitLabel(MCSymbol *Symbol, SMLoc Loc) {
+  MCObjectStreamer::emitLabel(Symbol, Loc);
+  static_cast<MCSymbolGOFF *>(Symbol)->initAttributes();
+}
+
+bool MCGOFFStreamer::emitSymbolAttribute(MCSymbol *Sym,
+                                         MCSymbolAttr Attribute) {
+  auto *Symbol = static_cast<MCSymbolGOFF *>(Sym);
+  switch (Attribute) {
+  case MCSA_Invalid:
+  case MCSA_Cold:
+  case MCSA_ELF_TypeIndFunction:
+  case MCSA_ELF_TypeTLS:
+  case MCSA_ELF_TypeCommon:
+  case MCSA_ELF_TypeNoType:
+  case MCSA_ELF_TypeGnuUniqueObject:
+  case MCSA_LGlobal:
+  case MCSA_Extern:
+  case MCSA_Exported:
+  case MCSA_IndirectSymbol:
+  case MCSA_Internal:
+  case MCSA_LazyReference:
+  case MCSA_NoDeadStrip:
+  case MCSA_SymbolResolver:
+  case MCSA_AltEntry:
+  case MCSA_PrivateExtern:
+  case MCSA_Protected:
+  case MCSA_Reference:
+  case MCSA_WeakDefinition:
+  case MCSA_WeakDefAutoPrivate:
+  case MCSA_WeakAntiDep:
+  case MCSA_Memtag:
+    return false;
+
+  case MCSA_ELF_TypeFunction:
+    Symbol->setCodeData(GOFF::ESDExecutable::ESD_EXE_CODE);
+    break;
+  case MCSA_ELF_TypeObject:
+    Symbol->setCodeData(GOFF::ESDExecutable::ESD_EXE_DATA);
+    break;
+  case MCSA_OSLinkage:
+    Symbol->setLinkage(GOFF::ESDLinkageType::ESD_LT_OS);
+    break;
+  case MCSA_XPLinkage:
+    Symbol->setLinkage(GOFF::ESDLinkageType::ESD_LT_XPLink);
+    break;
+  case MCSA_Global:
+    Symbol->setExternal(true);
+    break;
+  case MCSA_Local:
+    Symbol->setExternal(false);
+    break;
+  case MCSA_Weak:
+  case MCSA_WeakReference:
----------------
MaskRay wrote:

MCSA_WeakReference is used by AsmPrinter::emitGlobalAlias - ensure that GOFF has such a test.

https://github.com/llvm/llvm-project/pull/144437