gcc/testsuite/gcc.target/i386/pr56151.c

   1 /* PR rtl-optimization/56151 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 int vara, varb;
   6
   7 void
   8 foo (int i, int j)
   9 {
  10   vara = varb | vara;
  11 }
  12
  13 /* Verify the above is compiled into movl varb, %reg; orl %reg, vara instead
  14    of longer movl vara, %reg; orl varb, %reg; movl %reg, vara.  */
  15 /* { dg-final { scan-assembler-not "mov\[^\n\r]*vara" { target nonpic } } } */
  16 /* { dg-final { scan-assembler-times "mov\[^\n\r]*varb" 1 { target nonpic } } } */
  17 /* { dg-final { scan-assembler-times "or\[^\n\r]*vara" 1 { target nonpic } } } */