gcc/testsuite/gcc.dg/ipa/ipa-sra-32.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-ipa-sra"  } */
   3
   4 /* Test that parameters can be removed even when they are returned but the
   5    return is unused.  */
   6
   7 extern int use(int use);
   8
   9
  10 static int __attribute__((noinline))
  11 foo(int a, int b, int c)
  12 {
  13   use (c);
  14   return a + b + c;
  15 }
  16
  17 static int __attribute__((noinline))
  18 bar (int a, int b, int c, int d)
  19 {
  20   return foo (a, b, c + d);
  21 }
  22
  23 int
  24 baz (int a, int b, int c, int d)
  25 {
  26   bar (a, b, c, d);
  27   return a + d;
  28 }
  29
  30 /* { dg-final { scan-ipa-dump-times "Will remove parameter" 4 "sra" } } */