Merge pull request swiftlang#28650 from compnerd/wasm-emission-cleanup

IRGen: collocate WASM/ELF handling

Author: compnerd

lib/IRGen/GenDecl.cpp

@@ -905,12 +905,11 @@ std::string IRGenModule::GetObjCSectionName(StringRef Section,
                ? ("__DATA," + Section).str()
                : ("__DATA," + Section + "," + MachOAttributes).str();
   case llvm::Triple::ELF:
+  case llvm::Triple::Wasm:
     return Section.substr(2).str();
   case llvm::Triple::XCOFF:
   case llvm::Triple::COFF:
     return ("." + Section.substr(2) + "$B").str();
-  case llvm::Triple::Wasm:
-    return Section.substr(2).str();
   }
 
   llvm_unreachable("unexpected object file format");
@@ -937,12 +936,11 @@ void IRGenModule::SetCStringLiteralSection(llvm::GlobalVariable *GV,
       return;
     }
   case llvm::Triple::ELF:
+  case llvm::Triple::Wasm:
     return;
   case llvm::Triple::XCOFF:
   case llvm::Triple::COFF:
     return;
-  case llvm::Triple::Wasm:
-    return;
   }
 
   llvm_unreachable("unexpected object file format");

lib/IRGen/GenMeta.cpp

@@ -113,15 +113,13 @@ void IRGenModule::setTrueConstGlobal(llvm::GlobalVariable *var) {
     var->setSection("__TEXT,__const");
     break;
   case llvm::Triple::ELF:
+  case llvm::Triple::Wasm:
     var->setSection(".rodata");
     break;
   case llvm::Triple::XCOFF:
   case llvm::Triple::COFF:
     var->setSection(".rdata");
     break;
-  case llvm::Triple::Wasm:
-    var->setSection(".rodata");
-    break;
   }
 }
 

lib/IRGen/IRGenModule.cpp

@@ -1269,6 +1269,7 @@ bool IRGenModule::finalize() {
       ModuleHash->setSection("__LLVM,__swift_modhash");
       break;
     case llvm::Triple::ELF:
+    case llvm::Triple::Wasm:
       ModuleHash->setSection(".swift_modhash");
       break;
     case llvm::Triple::COFF: