[Object] make SourceMgr available to MCContext during inline asm symbols

collection

Fixes PR51210.

Author: Yuanfang Chen

llvm/lib/Object/ModuleSymbolTable.cpp

@@ -99,17 +99,18 @@ initializeRecordStreamer(const Module &M,
   if (!MCII)
     return;
 
-  MCContext MCCtx(TT, MAI.get(), MRI.get(), STI.get());
+  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(InlineAsm));
+  SourceMgr SrcMgr;
+  SrcMgr.AddNewSourceBuffer(std::move(Buffer), SMLoc());
+
+  MCContext MCCtx(TT, MAI.get(), MRI.get(), STI.get(), &SrcMgr);
   std::unique_ptr<MCObjectFileInfo> MOFI(
       T->createMCObjectFileInfo(MCCtx, /*PIC=*/false));
   MOFI->setSDKVersion(M.getSDKVersion());
   MCCtx.setObjectFileInfo(MOFI.get());
   RecordStreamer Streamer(MCCtx, M);
   T->createNullTargetStreamer(Streamer);
 
-  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(InlineAsm));
-  SourceMgr SrcMgr;
-  SrcMgr.AddNewSourceBuffer(std::move(Buffer), SMLoc());
   std::unique_ptr<MCAsmParser> Parser(
       createMCAsmParser(SrcMgr, MCCtx, Streamer, *MAI));