gcc/testsuite/gcc.dg/tm/memopt-9.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fgnu-tm -O -fdump-tree-tmmark" } */
   3
   4 extern int something(void) __attribute__((transaction_safe));
   5 extern void *malloc (__SIZE_TYPE__) __attribute__((malloc,transaction_safe));
   6
   7 struct large { int foo[500]; };
   8
   9 int f()
  10 {
  11   int *p;
  12   struct large *lp;
  13
  14   __transaction_atomic {
  15     p = malloc (sizeof (*p) * 100);
  16     lp = malloc (sizeof (*lp) * 100);
  17
  18     /* No instrumentation necessary; P and LP are transaction local.  */
  19     p[5] = 123;
  20     lp->foo[66] = 123;
  21
  22     if (something())
  23       __transaction_cancel;
  24   }
  25   return p[5];
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "ITM_WU" 0 "tmmark" } } */