gcc/testsuite/gcc.dg/ipa/propalign-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-early-inlining -fdump-ipa-cp -fdump-tree-optimized" } */
   3 /* { dg-skip-if "No alignment restrictions" { { ! natural_alignment_32 } && { ! natural_alignment_64 } } } */
   4
   5 #include <stdint.h>
   6
   7 extern int fail_the_test(void *);
   8 extern int pass_the_test(void *);
   9 extern int diversion (void *);
  10
  11 static int __attribute__((noinline))
  12 foo (void *p)
  13 {
  14   uintptr_t a = (uintptr_t) p;
  15
  16   if (a % 4)
  17     return fail_the_test (p);
  18   else
  19     return pass_the_test (p);
  20 }
  21
  22 int
  23 bar (void)
  24 {
  25   double buf[8] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  26   return foo (&buf);
  27 }
  28
  29
  30 /* { dg-final { scan-ipa-dump "Adjusting align" "cp" } } */
  31 /* { dg-final { scan-tree-dump-not "fail_the_test" "optimized" } } */