Standardize accesses to the TargetInfo in IR-gen.

Patch by Stephen Lin!

llvm-svn: 179638

clang/lib/CodeGen/CGExprAgg.cpp

@@ -1341,7 +1341,7 @@ static CharUnits GetNumNonZeroBytesInInit(const Expr *E, CodeGenFunction &CGF) {
         // Reference values are always non-null and have the width of a pointer.
         if (Field->getType()->isReferenceType())
           NumNonZeroBytes += CGF.getContext().toCharUnitsFromBits(
-              CGF.getContext().getTargetInfo().getPointerWidth(0));
+              CGF.getTarget().getPointerWidth(0));
         else
           NumNonZeroBytes += GetNumNonZeroBytesInInit(E, CGF);
       }