gcc/testsuite/gcc.dg/pr50078.c

   1 /* PR tree-optimization/50078 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 unsigned nonvolvar[2];
   6
   7 void
   8 test (int arg)
   9 {
  10   unsigned v = *(volatile unsigned *) (&nonvolvar[arg]);
  11   *(volatile unsigned *) (&nonvolvar[arg]) = v;
  12 }
  13
  14 /* { dg-final { scan-assembler-times "movl\[^\n\r\]*nonvolvar" 2 { target { { i?86-*-* x86_64-*-* } && nonpic } } } } */