[MC] Replace getCurrentSection().first with getCurrentSectionOnly. NFC

Author: MaskRay

llvm/lib/MC/MCParser/ELFAsmParser.cpp

@@ -682,9 +682,8 @@ bool ELFAsmParser::ParseSectionArguments(bool IsPush, SMLoc loc) {
   }
 
   if (UseLastGroup) {
-    MCSectionSubPair CurrentSection = getStreamer().getCurrentSection();
     if (const MCSectionELF *Section =
-            cast_or_null<MCSectionELF>(CurrentSection.first))
+            cast_or_null<MCSectionELF>(getStreamer().getCurrentSectionOnly()))
       if (const MCSymbol *Group = Section->getGroup()) {
         GroupName = Group->getName();
         IsComdat = Section->isComdat();

llvm/lib/MC/MCParser/WasmAsmParser.cpp

@@ -252,7 +252,7 @@ class WasmAsmParser : public MCAsmParserExtension {
     if (TypeName == "function") {
       WasmSym->setType(wasm::WASM_SYMBOL_TYPE_FUNCTION);
       auto *Current =
-          cast<MCSectionWasm>(getStreamer().getCurrentSection().first);
+          cast<MCSectionWasm>(getStreamer().getCurrentSectionOnly());
       if (Current->getGroup())
         WasmSym->setComdat(true);
     } else if (TypeName == "global")

llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp

@@ -756,7 +756,7 @@ class WebAssemblyAsmParser final : public MCTargetAsmParser {
 
   bool CheckDataSection() {
     if (CurrentState != DataSection) {
-      auto WS = cast<MCSectionWasm>(getStreamer().getCurrentSection().first);
+      auto WS = cast<MCSectionWasm>(getStreamer().getCurrentSectionOnly());
       if (WS && WS->isText())
         return error("data directive must occur in a data segment: ",
                      Lexer.getTok());
@@ -1073,8 +1073,8 @@ class WebAssemblyAsmParser final : public MCTargetAsmParser {
 
   void doBeforeLabelEmit(MCSymbol *Symbol, SMLoc IDLoc) override {
     // Code below only applies to labels in text sections.
-    auto CWS = cast<MCSectionWasm>(getStreamer().getCurrentSection().first);
-    if (!CWS || !CWS->isText())
+    auto CWS = cast<MCSectionWasm>(getStreamer().getCurrentSectionOnly());
+    if (!CWS->isText())
       return;
 
     auto WasmSym = cast<MCSymbolWasm>(Symbol);