gcc/testsuite/gcc.dg/tree-ssa/reassoc-24.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 --param tree-reassoc-width=2 -fdump-tree-reassoc2" } */
   3
   4 unsigned int
   5 foo (void)
   6 {
   7   unsigned int a = 0;
   8   unsigned int b;
   9
  10   asm volatile ("" : "=r" (b) : "0" (0));
  11   a += b;
  12   asm volatile ("" : "=r" (b) : "0" (0));
  13   a += b;
  14   asm volatile ("" : "=r" (b) : "0" (0));
  15   a += b;
  16   asm volatile ("" : "=r" (b) : "0" (0));
  17   a += b;
  18
  19   return a;
  20 }
  21
  22 /* Verify there are two pairs of __asm__ statements with no
  23    intervening stmts.  */
  24 /* { dg-final { scan-tree-dump-times "__asm__\[^;\n]*;\n *__asm__" 2 "reassoc2"} } */