gcc/testsuite/gcc.target/i386/combine-mul.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-final { scan-assembler-not "12345" } } */
   4
   5 static inline unsigned int myrnd (void)
   6 {
   7     static unsigned int s = 1388815473;
   8     s *= 1103515245;
   9     s += 12345;
  10 }
  11
  12 struct __attribute__ ((packed)) A {
  13     unsigned short i:1, l:1, j:3, k:11;
  14 };
  15
  16 struct A sA;
  17 void testA (void)
  18 {
  19     char *p = (char *) &sA;
  20     *p++ = myrnd ();
  21     *p++ = myrnd ();
  22     sA.k = -1;
  23 }