gcc/testsuite/gcc.target/s390/unaligned-1.c

   1 /* With the -munaligned-symbols option all external and weak symbols
   2    without explicit alignment are assumed to be potentially unaligned
   3    and therefore cannot be accessed with larl.  */
   4
   5 /* { dg-do compile } */
   6 /* { dg-options "-O3 -march=z900 -fno-section-anchors -munaligned-symbols" } */
   7
   8 extern unsigned char extern_char;
   9 extern unsigned char extern_explicitly_aligned_char __attribute__((aligned(2)));
  10 extern unsigned char extern_explicitly_unaligned_char __attribute__((aligned(1)));
  11 extern unsigned char __attribute__((weak)) extern_weak_char;
  12 extern unsigned char extern_explicitly_aligned_weak_char __attribute__((weak,aligned(2)));
  13 extern unsigned char extern_explicitly_unaligned_weak_char __attribute__((weak,aligned(1)));
  14
  15 unsigned char normal_char;
  16 unsigned char explicitly_unaligned_char __attribute__((aligned(1)));
  17 unsigned char __attribute__((weak)) weak_char = 0;
  18 unsigned char explicitly_aligned_weak_char __attribute__((weak,aligned(2)));
  19 unsigned char explicitly_unaligned_weak_char __attribute__((weak,aligned(1)));
  20
  21 extern unsigned int extern_int;
  22 extern unsigned int extern_explicitly_aligned_int __attribute__((aligned(4)));
  23 extern unsigned int extern_explicitly_unaligned_int __attribute__((aligned(1)));
  24 extern unsigned int __attribute__((weak)) extern_weak_int;
  25 extern unsigned int extern_explicitly_aligned_weak_int __attribute__((weak,aligned(4)));
  26 extern unsigned int extern_explicitly_unaligned_weak_int __attribute__((weak,aligned(1)));
  27
  28 unsigned int normal_int;
  29 unsigned int explicitly_unaligned_int __attribute__((aligned(1)));
  30 unsigned int __attribute__((weak)) weak_int = 0;
  31 unsigned int explicitly_aligned_weak_int __attribute__((weak,aligned(4)));
  32 unsigned int explicitly_unaligned_weak_int __attribute__((weak,aligned(1)));
  33
  34 extern const void extern_void;
  35 extern const void extern_explicitly_aligned_void __attribute__((aligned(2)));
  36 extern const void extern_explicitly_unaligned_void __attribute__((aligned(1)));
  37 extern const void __attribute__((weak)) extern_weak_void;
  38 extern const void extern_explicitly_aligned_weak_void __attribute__((weak,aligned(2)));
  39 extern const void extern_explicitly_unaligned_weak_void __attribute__((weak,aligned(1)));
  40
  41
  42 unsigned char
  43 foo ()
  44 {
  45   return extern_char + extern_explicitly_aligned_char
  46     + extern_explicitly_unaligned_char
  47     + extern_weak_char + extern_explicitly_aligned_weak_char
  48     + extern_explicitly_unaligned_weak_char
  49
  50     + normal_char + explicitly_unaligned_char
  51     + weak_char + explicitly_aligned_weak_char
  52     + explicitly_unaligned_weak_char
  53
  54     + extern_int + extern_explicitly_aligned_int
  55     + extern_explicitly_unaligned_int
  56     + extern_weak_int + extern_explicitly_aligned_weak_int
  57     + extern_explicitly_unaligned_weak_int
  58
  59     + normal_int + explicitly_unaligned_int
  60     + weak_int + explicitly_aligned_weak_int
  61     + explicitly_unaligned_weak_int;
  62 }
  63
  64 const void *f1(void) { return &extern_void; }
  65 const void *f2(void) { return &extern_explicitly_aligned_void; }
  66 const void *f3(void) { return &extern_explicitly_unaligned_void; }
  67 const void *f4(void) { return &extern_weak_void; }
  68 const void *f5(void) { return &extern_explicitly_aligned_weak_void; }
  69 const void *f6(void) { return &extern_explicitly_unaligned_weak_void; }
  70
  71
  72 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_char\n" 0 } } */
  73 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_char\n" 1 } } */
  74 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_char\n" 0 } } */
  75 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_weak_char\n" 0 } } */
  76 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_weak_char\n" 1 } } */
  77 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_weak_char\n" 0 } } */
  78
  79 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,normal_char\n" 1 } } */
  80 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_unaligned_char\n" 0 } } */
  81 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,weak_char\n" 0 } } */
  82 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_aligned_weak_char\n" 1 } } */
  83 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_unaligned_weak_char\n" 0 } } */
  84
  85 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_int\n" 1 } } */
  86 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_int\n" 1 } } */
  87 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_int\n" 0 } } */
  88 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_weak_int\n" 1 } } */
  89 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_weak_int\n" 1 } } */
  90 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_weak_int\n" 0 } } */
  91
  92 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,normal_int\n" 1 } } */
  93 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_unaligned_int\n" 0 } } */
  94 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,weak_int\n" 1 } } */
  95 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_aligned_weak_int\n" 1 } } */
  96 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,explicitly_unaligned_weak_int\n" 0 } } */
  97
  98 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_void\n" 0 } } */
  99 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_void\n" 1 } } */
 100 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_void\n" 0 } } */
 101 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_weak_void\n" 0 } } */
 102 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_aligned_weak_void\n" 1 } } */
 103 /* { dg-final { scan-assembler-times "larl\t%r\[0-9\]*,extern_explicitly_unaligned_weak_void\n" 0 } } */