Fix up a few grammar issues.

llvm-svn: 332835

include/llvm/MC/MCFragment.h

@@ -67,7 +67,7 @@ private:
   /// The data for the section this fragment is in.
   MCSection *Parent;
 
-  /// Atom - The atom this fragment is in, as represented by it's defining
+  /// Atom - The atom this fragment is in, as represented by its defining
   /// symbol.
   const MCSymbol *Atom;
 

lib/Target/Hexagon/HexagonNewValueJump.cpp

@@ -160,7 +160,7 @@ static bool canBeFeederToNewValueJump(const HexagonInstrInfo *QII,
   assert(HadDef);
 
   // Make sure there is no 'def' or 'use' of any of the uses of
-  // feeder insn between it's definition, this MI and jump, jmpInst
+  // feeder insn between its definition, this MI and jump, jmpInst
   // skipping compare, cmpInst.
   // Here's the example.
   //    r21=memub(r22+r24<<#0)

lib/Transforms/Scalar/RewriteStatepointsForGC.cpp

@@ -2031,7 +2031,7 @@ static void rematerializeLiveValues(CallSite CS,
   SmallVector<Value *, 32> LiveValuesToBeDeleted;
 
   for (Value *LiveValue: Info.LiveSet) {
-    // For each live pointer find it's defining chain
+    // For each live pointer find its defining chain
     SmallVector<Instruction *, 3> ChainToBase;
     assert(Info.PointerToBase.count(LiveValue));
     Value *RootOfChain =