gcc/testsuite/gcc.dg/ipa/propalign-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-early-inlining -fdump-ipa-cp -fdump-tree-optimized" } */
   3
   4 #include <stdint.h>
   5
   6 extern int fail_the_test(void *);
   7 extern int pass_the_test(void *);
   8 extern int diversion (void *);
   9
  10 struct somestruct
  11 {
  12   void *whee;
  13   void *oops;
  14 };
  15
  16 struct container
  17 {
  18   struct somestruct first;
  19   struct somestruct buf[32];
  20 };
  21
  22 static int __attribute__((noinline))
  23 foo (void *p)
  24 {
  25   uintptr_t a = (uintptr_t) p;
  26
  27   if (a % 4)
  28     return fail_the_test (p);
  29   else
  30     return pass_the_test (p);
  31 }
  32
  33 int
  34 bar (void)
  35 {
  36   struct container c;
  37   return foo (c.buf);
  38 }
  39
  40
  41 static int
  42 through (struct somestruct *p)
  43 {
  44   diversion (p);
  45   return foo (&p[16]);
  46 }
  47
  48 int
  49 bar2 (void)
  50 {
  51   struct container c;
  52   through (c.buf);
  53 }
  54
  55 /* { dg-final { scan-ipa-dump "Adjusting alignment of param" "cp" } } */
  56 /* { dg-final { scan-tree-dump-not "fail_the_test" "optimized" } } */
  57 /* { dg-final { cleanup-ipa-dump "cp" } } */
  58 /* { dg-final { cleanup-tree-dump "optimized" } } */