gcc/testsuite/gcc.target/sh/pr67675.c

   1 /* Check that run time alignment tests are generated only for inputs of
   2    unknown alignment.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" }  */
   5 /* { dg-final { scan-assembler-not "jmp|bsr|jsr" } }  */
   6 /* { dg-final { scan-assembler-times {tst       #3,r0} 6 } }  */
   7 /* { dg-final { scan-assembler-times {or        r[0-9],r[0-9]} 1 } }  */
   8
   9 int
  10 test_00 (const char* x, const char* y)
  11 {
  12   /* 1x or reg,reg, 1x tst #3,r0  */
  13   return __builtin_strcmp (x, y);
  14 }
  15
  16 int
  17 test_01 (const char* x, const char* y)
  18 {
  19   /* 1x tst #3,r0  */
  20   return __builtin_strcmp (__builtin_assume_aligned (x, 4), y);
  21 }
  22
  23 int
  24 test_02 (const char* x, const char* y)
  25 {
  26   /* 1x tst #3,r0  */
  27   return __builtin_strcmp (x, __builtin_assume_aligned (y, 4));
  28 }
  29
  30 int
  31 test_03 (const char* x, const char* y)
  32 {
  33   return __builtin_strcmp (__builtin_assume_aligned (x, 4),
  34                            __builtin_assume_aligned (y, 4));
  35 }
  36
  37 int
  38 test_04 (const char* x, const char* y)
  39 {
  40   /* 1x tst #3,r0  */
  41   return __builtin_strcmp (x, "1234567");
  42 }
  43
  44 int
  45 test_05 (const char* x, const char* y)
  46 {
  47   /* 1x tst #3,r0  */
  48   return __builtin_strcmp ("1234567", y);
  49 }
  50
  51 int
  52 test_06 (const char* s1)
  53 {
  54   /* 1x tst #3,r0  */
  55   return __builtin_strncmp (s1, "abcdabcd", 8);
  56 }
  57
  58 int
  59 test_07 (const char* s1)
  60 {
  61   return __builtin_strncmp (__builtin_assume_aligned (s1, 4), "abcdabcd", 8);
  62 }