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PR/51443
[pf3gnuchains/gcc-fork.git] / gcc / testsuite / gcc.dg / tm / memopt-11.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   foo(p[5]);
13
14   __transaction_atomic {
15     /* p[5] is thread private, however the SSA_NAME that holds the
16        address dominates the entire transaction (transaction
17        invariant) so we can use a save/restore pair.  */
18     p[5] = 123;
19
20     if (something())
21       __transaction_cancel;
22   }
23   return p[5];
24 }
25
26 /* { dg-final { scan-tree-dump-times "ITM_LU" 0 "tmmark" } } */
27 /* { dg-final { scan-tree-dump-times "ITM_WU" 0 "tmmark" } } */
28 /* { dg-final { scan-tree-dump-times "tm_save" 1 "tmmark" } } */
29 /* { dg-final { cleanup-tree-dump "tmmark" } } */