Update comments.

llvm-svn: 50974

lib/VMCore/AsmWriter.cpp

@@ -539,7 +539,7 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
     Out << "zeroinitializer";
   } else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
     // As a special case, print the array as a string if it is an array of
-    // ubytes or an array of sbytes with positive values.
+    // i8 with ConstantInt values.
     //
     const Type *ETy = CA->getType()->getElementType();
     if (CA->isString()) {

lib/VMCore/Instructions.cpp

@@ -1605,10 +1605,9 @@ bool CastInst::isLosslessCast() const {
 /// changed in order to effect the cast. Essentially, it identifies cases where
 /// no code gen is necessary for the cast, hence the name no-op cast.  For 
 /// example, the following are all no-op casts:
-/// # bitcast uint %X, int
-/// # bitcast uint* %x, sbyte*
-/// # bitcast vector< 2 x int > %x, vector< 4 x short> 
-/// # ptrtoint uint* %x, uint     ; on 32-bit plaforms only
+/// # bitcast i32* %x to i8*
+/// # bitcast <2 x i32> %x to <4 x i16> 
+/// # ptrtoint i32* %x to i32     ; on 32-bit plaforms only
 /// @brief Determine if a cast is a no-op.
 bool CastInst::isNoopCast(const Type *IntPtrTy) const {
   switch (getOpcode()) {