int S;
volatile int vS;

int* pS;
volatile int* pvS;

int A[10];
volatile int vA[10];

struct { int x; } F;
struct { volatile int x; } vF;

struct { int x; } F2;
volatile struct { int x; } vF2;

struct { struct { int y; } x; } F3;
volatile struct { struct { int y; } x; } vF3;

struct { int x:3; } BF;
struct { volatile int x:3; } vBF;

typedef int v4si __attribute__ ((vector_size (16)));
v4si V;
volatile v4si vV;

// union?

void main() {
  int i;

  // load
  i=S;
  i=vS;
  i=*pS;
  i=*pvS;
  i=A[2];
  i=vA[2];
  i=F.x;
  i=vF.x;
  i=F2.x;
  i=vF2.x;
  i=F3.x.y;
  i=vF3.x.y;
  i=BF.x;
  i=vBF.x;
  i=V[3];
  i=vV[3];
//  i=V.yx;
//  i=vV.zy;

  // store
  S=i;
  vS=i;
  *pS=i;
  *pvS=i;
  A[2]=i;
  vA[2]=i;
  F.x=i;
  vF.x=i;
  F2.x=i;
  vF2.x=i;
  BF.x=i;
  // even if the return value of this statement isn't used (like here)
  // clang add a volatile load which can't be removed.
  // is it the correct behavior?
  vBF.x=i;
  // this don't help:
  // (void)(vBF.x=i);
  V[3]=i;
  vV[3]=i;

  // other ops:
  ++S;
  ++vS;
  i+=S;
  i+=vS;
}