gcc/testsuite/gcc.dg/tree-ssa/sra-6.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized -fdump-tree-esra-details" } */
   3
   4 typedef struct teststruct
   5 {
   6   double d;
   7   int i1;
   8   char c1;
   9   float z;
  10   char c2;
  11   int i2;
  12 } teststruct;
  13
  14 void link_error (void);
  15
  16 void cow (int i)
  17 {
  18   teststruct a, b, c, d;
  19
  20   a.d = 3.2;
  21   a.i1 = i;
  22
  23   b = a;
  24   c = b;
  25   d = c;
  26
  27   if (d.i1 != i)
  28     link_error ();
  29 }
  30
  31
  32 /* Suaccesses of b and c should have been created.  */
  33 /* { dg-final { scan-tree-dump "expr = b.d"  "esra"} } */
  34 /* { dg-final { scan-tree-dump "expr = b.i1"  "esra"} } */
  35 /* { dg-final { scan-tree-dump "expr = c.d"  "esra"} } */
  36 /* { dg-final { scan-tree-dump "expr = c.i1"  "esra"} } */
  37
  38 /* There should be no reference to link_error.  */
  39 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */