Ensure local symbols are correctly added to the symbol table.

Author: fpetrogalli

llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.cpp

@@ -122,6 +122,16 @@ createRISCVObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI) {
   return nullptr;
 }
 
+static MCStreamer *
+createMachOStreamer(MCContext &Ctx, std::unique_ptr<MCAsmBackend> &&TAB,
+                    std::unique_ptr<MCObjectWriter> &&OW,
+                    std::unique_ptr<MCCodeEmitter> &&Emitter) {
+  return createMachOStreamer(Ctx, std::move(TAB), std::move(OW),
+                             std::move(Emitter),
+			     /*DWARFMustBeAtTheEnd*/ false,
+                             /*LabelSections*/ true);
+}
+
 static MCTargetStreamer *
 createRISCVAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS,
                              MCInstPrinter *InstPrint) {
@@ -393,6 +403,7 @@ LLVMInitializeRISCVTargetMC() {
     TargetRegistry::RegisterMCInstPrinter(*T, createRISCVMCInstPrinter);
     TargetRegistry::RegisterMCSubtargetInfo(*T, createRISCVMCSubtargetInfo);
     TargetRegistry::RegisterELFStreamer(*T, createRISCVELFStreamer);
+    TargetRegistry::RegisterMachOStreamer(*T, createMachOStreamer);
     TargetRegistry::RegisterObjectTargetStreamer(
         *T, createRISCVObjectTargetStreamer);
     TargetRegistry::RegisterMCInstrAnalysis(*T, createRISCVInstrAnalysis);

llvm/test/MC/RISCV/macho-local-symbol.s

@@ -0,0 +1,7 @@
+;; RUN:  llvm-mc -triple riscv32-apple-macho %s -filetype=obj -o - | \
+;; RUN:  llvm-objdump - -d  | FileCheck %s
+	
+Ltmp0:	
+        addi a0, a0, 1
+
+	;; CHECK: 00000000 <ltmp0>: