[AsmPrinter] Hide implementation details

NFC.

llvm-svn: 241169
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
index a4fd36f..f4667b4a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
@@ -21,7 +21,7 @@
 class MachineFunction;
 class ARMTargetStreamer;
 
-class DwarfCFIExceptionBase : public EHStreamer {
+class LLVM_LIBRARY_VISIBILITY DwarfCFIExceptionBase : public EHStreamer {
 protected:
   DwarfCFIExceptionBase(AsmPrinter *A);
 
@@ -31,7 +31,7 @@
   void markFunctionEnd() override;
 };
 
-class DwarfCFIException : public DwarfCFIExceptionBase {
+class LLVM_LIBRARY_VISIBILITY DwarfCFIException : public DwarfCFIExceptionBase {
   /// Per-function flag to indicate if .cfi_personality should be emitted.
   bool shouldEmitPersonality;
 
@@ -61,7 +61,7 @@
   void endFunction(const MachineFunction *) override;
 };
 
-class ARMException : public DwarfCFIExceptionBase {
+class LLVM_LIBRARY_VISIBILITY ARMException : public DwarfCFIExceptionBase {
   void emitTypeInfos(unsigned TTypeEncoding) override;
   ARMTargetStreamer &getTargetStreamer();
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/EHStreamer.h b/llvm/lib/CodeGen/AsmPrinter/EHStreamer.h
index 65973fa..e42e082 100644
--- a/llvm/lib/CodeGen/AsmPrinter/EHStreamer.h
+++ b/llvm/lib/CodeGen/AsmPrinter/EHStreamer.h
@@ -30,7 +30,7 @@
 class SmallVectorImpl;
 
 /// Emits exception handling directives.
-class EHStreamer : public AsmPrinterHandler {
+class LLVM_LIBRARY_VISIBILITY EHStreamer : public AsmPrinterHandler {
 protected:
   /// Target of directive emission.
   AsmPrinter *Asm;
diff --git a/llvm/lib/CodeGen/AsmPrinter/WinCodeViewLineTables.h b/llvm/lib/CodeGen/AsmPrinter/WinCodeViewLineTables.h
index c66d141..a5b399f 100644
--- a/llvm/lib/CodeGen/AsmPrinter/WinCodeViewLineTables.h
+++ b/llvm/lib/CodeGen/AsmPrinter/WinCodeViewLineTables.h
@@ -29,7 +29,7 @@
 
 namespace llvm {
 /// \brief Collects and handles line tables information in a CodeView format.
-class WinCodeViewLineTables : public AsmPrinterHandler {
+class LLVM_LIBRARY_VISIBILITY WinCodeViewLineTables : public AsmPrinterHandler {
   AsmPrinter *Asm;
   DebugLoc PrevInstLoc;
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/WinException.h b/llvm/lib/CodeGen/AsmPrinter/WinException.h
index a4ebd8a..669c9cc 100644
--- a/llvm/lib/CodeGen/AsmPrinter/WinException.h
+++ b/llvm/lib/CodeGen/AsmPrinter/WinException.h
@@ -23,7 +23,7 @@
 class MCExpr;
 struct WinEHFuncInfo;
 
-class WinException : public EHStreamer {
+class LLVM_LIBRARY_VISIBILITY WinException : public EHStreamer {
   /// Per-function flag to indicate if personality info should be emitted.
   bool shouldEmitPersonality = false;