gcc/testsuite/gcc.dg/tm/memopt-10.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 int f()
   8 {
   9   int *p;
  10
  11   p = malloc (sizeof (*p) * 100);
  12
  13   __transaction_atomic {
  14     /* p[5] is thread private, but not transaction local since the
  15        malloc is outside of the transaction.  We can use the logging
  16        functions for this.  */
  17     p[5] = 123;
  18
  19     if (something())
  20       __transaction_cancel;
  21   }
  22   return p[5];
  23 }
  24
  25 /* { dg-final { scan-tree-dump-times "ITM_LU" 0 "tmmark" } } */
  26 /* { dg-final { scan-tree-dump-times "ITM_WU" 0 "tmmark" } } */
  27 /* { dg-final { scan-tree-dump-times "int tm_save" 1 "tmmark" } } */