[PowerPC] Fix some Include What You Use warnings; other minor fixes (NFC).

This is preparation to reduce MC headers dependencies.

llvm-svn: 294368

1 files changed, 11 insertions, 3 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCTargetStreamer.h b/llvm/lib/Target/PowerPC/PPCTargetStreamer.h
index dbe7617d354..310fea9ef09 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetStreamer.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetStreamer.h
@@ -1,4 +1,4 @@
-//===-- PPCTargetStreamer.h - PPC Target Streamer --s-----------*- C++ -*--===//
+//===- PPCTargetStreamer.h - PPC Target Streamer ----------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -10,18 +10,26 @@
 #ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H
 #define LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H
 
+#include "llvm/ADT/StringRef.h"
 #include "llvm/MC/MCStreamer.h"
 
 namespace llvm {
+
+class MCExpr;
+class MCSymbol;
+class MCSymbolELF;
+
 class PPCTargetStreamer : public MCTargetStreamer {
 public:
   PPCTargetStreamer(MCStreamer &S);
   ~PPCTargetStreamer() override;
+
   virtual void emitTCEntry(const MCSymbol &S) = 0;
   virtual void emitMachine(StringRef CPU) = 0;
   virtual void emitAbiVersion(int AbiVersion) = 0;
   virtual void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) = 0;
 };
-}
 
-#endif
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H