gcc/testsuite/gcc.target/arm/pr46788.c

/* { dg-options "-mthumb -O2" }  */
/* { dg-require-effective-target arm_thumb2_ok } */
/* { dg-final { scan-assembler-not "-32768" } } */

typedef union
{
  unsigned long int u_32_value;
  struct 
  {
    unsigned short int u_16_value_0;
    unsigned short int u_16_value_1;
  } u_16_values;
} my_union;


unsigned long int Test(const unsigned short int wXe)
{
  my_union dwCalcVal;
  
  dwCalcVal.u_16_values.u_16_value_0=wXe;
  dwCalcVal.u_16_values.u_16_value_1=0x8000u;

  dwCalcVal.u_32_value /=3;
  
  return (dwCalcVal.u_32_value);
}