gcc/testsuite/gcc.dg/tm/memopt-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fgnu-tm -O -fdump-tree-tmedge" } */
   3
   4 /* Test thread-local memory optimizations: save/restore pairs.  */
   5
   6 struct large { int x[100]; };
   7 struct large bark();
   8 extern int test (void) __attribute__((transaction_safe));
   9 extern int readint (void);
  10
  11 int f()
  12 {
  13   int i = readint();
  14   struct large lala = bark();
  15   __transaction_atomic {
  16     lala.x[55] = 666;
  17     if (test())
  18       __transaction_cancel;
  19   }
  20   return lala.x[i];
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "tm_save.\[0-9_\]+ = lala.x\\\[55\\\]" 1 "tmedge" } } */
  24 /* { dg-final { scan-tree-dump-times "lala.x\\\[55\\\] = tm_save" 1 "tmedge" } } */
  25 /* { dg-final { cleanup-tree-dump "tmedge" } } */