C pointers vs direct member access for structs

Question

Say I have a struct like the following ...

typedef struct {
  int WheelCount;
  double MaxSpeed;
} Vehicle;

... and I have a global variabl

Answer 1

The first one should be faster since it doesn't require pointer dereferencing. Then again thats true for x86 based systems, not sure for others.

on x86 the first one would translate to something like this

mov eax, [address of MyGlobal.MaxSpeed]

and the second one would be something like this

mov ebx, [address of pMyGlobal] 
mov eax, [ebx+sizeof(int)]