gcc/testsuite/gcc.dg/tree-ssa/sra-8.c

   1 /* A testcase for PR 40744.  We do not want to create replacements for object
   2    that are dead or have only a single use, whenever it can be avoided
   3    simply. */
   4 /* { dg-do compile } */
   5 /* { dg-options "-O1 -fdump-tree-esra-details" } */
   6
   7 struct X { int i; int j; };
   8
   9 void foo(void)
  10 {
  11   struct X x;
  12   x.i = 1;
  13   x.j = 2;
  14 }
  15
  16
  17 int bar(struct X x)
  18 {
  19   return x.i;
  20 }
  21
  22
  23 extern void do_something (struct X);
  24
  25 void bar2(int i, int j)
  26 {
  27   struct X x;
  28
  29   x.i = i;
  30   x.j = j;
  31   do_something (x);
  32 }
  33
  34 /* { dg-final { scan-tree-dump-times "Created a replacement" 0 "esra"} } */
  35 /* { dg-final { cleanup-tree-dump "esra" } } */