Trivial cleanups.

This just clang formats and cleans comments in an area I am about to
post a patch for review.

llvm-svn: 269946
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index 6496339..b49c01b 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -21,7 +21,7 @@
 
 namespace llvm {
 
-/// PPCTargetMachine - Common code between 32-bit and 64-bit PowerPC targets.
+/// Common code between 32-bit and 64-bit PowerPC targets.
 ///
 class PPCTargetMachine : public LLVMTargetMachine {
 public:
@@ -57,7 +57,7 @@
   };
 };
 
-/// PPC32TargetMachine - PowerPC 32-bit target machine.
+/// PowerPC 32-bit target machine.
 ///
 class PPC32TargetMachine : public PPCTargetMachine {
   virtual void anchor();
@@ -68,7 +68,7 @@
                      CodeGenOpt::Level OL);
 };
 
-/// PPC64TargetMachine - PowerPC 64-bit target machine.
+/// PowerPC 64-bit target machine.
 ///
 class PPC64TargetMachine : public PPCTargetMachine {
   virtual void anchor();