gcc/testsuite/gcc.dg/tree-ssa/pr91482.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-ccp1 -fdump-tree-store-merging" } */
   3
   4 void write64 (void *p)
   5 {
   6   unsigned *p1 = (unsigned *) __builtin_assume_aligned (p, 8);
   7   *p1++ = 0;
   8   unsigned *p2 = (unsigned *) __builtin_assume_aligned (p1, 4);
   9   *p2++ = 1;
  10 }
  11
  12 /* { dg-final { scan-tree-dump-times "__builtin_assume_aligned" 1 "ccp1" } } */
  13 /* { dg-final { scan-tree-dump "New sequence of 1 stores to replace old one of 2 stores" "store-merging" { target lp64 } } } */