Misc style fixes. NFC.

This fixes a few cases of:

* Wrong variable name style.
* Lines longer than 80 columns.
* Repeated names in comments.
* clang-format of the above.

This make the next patch a lot easier to read.

llvm-svn: 221615
diff --git a/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp b/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
index 048f2ad..101d1ca 100644
--- a/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
+++ b/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
@@ -28,11 +28,10 @@
     : MCDisassembler(STI, Ctx) {}
   virtual ~PPCDisassembler() {}
 
-  // Override MCDisassembler.
-  DecodeStatus getInstruction(MCInst &instr, uint64_t &size,
-                              const MemoryObject &region, uint64_t address,
-                              raw_ostream &vStream,
-                              raw_ostream &cStream) const override;
+  DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
+                              const MemoryObject &Region, uint64_t Address,
+                              raw_ostream &VStream,
+                              raw_ostream &CStream) const override;
 };
 } // end anonymous namespace
 
@@ -323,10 +322,9 @@
 #include "PPCGenDisassemblerTables.inc"
 
 DecodeStatus PPCDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
-                                                 const MemoryObject &Region,
-                                                 uint64_t Address,
-                                                 raw_ostream &os,
-                                                 raw_ostream &cs) const {
+                                             const MemoryObject &Region,
+                                             uint64_t Address, raw_ostream &OS,
+                                             raw_ostream &CS) const {
   // Get the four bytes of the instruction.
   uint8_t Bytes[4];
   Size = 4;
@@ -336,10 +334,8 @@
   }
 
   // The instruction is big-endian encoded.
-  uint32_t Inst = (Bytes[0] << 24) |
-                  (Bytes[1] << 16) |
-                  (Bytes[2] <<  8) |
-                  (Bytes[3] <<  0);
+  uint32_t Inst =
+      (Bytes[0] << 24) | (Bytes[1] << 16) | (Bytes[2] << 8) | (Bytes[3] << 0);
 
   return decodeInstruction(DecoderTable32, MI, Inst, Address, this, STI);
 }