gcc/testsuite/gcc.target/sh/cmpstr.c

   1 /* Check that the __builtin_strcmp function is inlined with cmp/str
   2    when optimizing for speed.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" } */
   5 /* { dg-final { scan-assembler-not "jmp" } } */
   6 /* { dg-final { scan-assembler-times "cmp/str" 3 } } */
   7 /* { dg-final { scan-assembler-times "tst\t#3" 2 } } */
   8
   9 int
  10 test00 (const char *s1, const char *s2)
  11 {
  12   return __builtin_strcmp (s1, s2);
  13 }
  14
  15 /* NB: This might change as further optimisation might detect the
  16    max length and fallback to cmpstrn.  */
  17 int
  18 test01 (const char *s2)
  19 {
  20   return __builtin_strcmp ("abc", s2);
  21 }
  22
  23 /* Check that no test for alignment is needed.  */
  24 int
  25 test03 (const char *s1, const char *s2)
  26 {
  27   return __builtin_strcmp (__builtin_assume_aligned (s1, 4),
  28                            __builtin_assume_aligned (s2, 4));
  29 }