gcc/testsuite/gcc.target/arm/builtin-bswap-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-require-effective-target arm_arch_v6_ok } */
   4 /* { dg-add-options arm_arch_v6 } */
   5 /* { dg-final { scan-assembler-not "orr\[ \t\]" } } */
   6 /* { dg-final { scan-assembler-times "revsh\\t" 1 { target { arm_nothumb } } } }  */
   7 /* { dg-final { scan-assembler-times "revshne\\t" 1 { target { arm_nothumb } } } }  */
   8 /* { dg-final { scan-assembler-times "revsh\\t" 2 { target { ! arm_nothumb } } } }  */
   9 /* { dg-final { scan-assembler-times "rev16\\t" 1 { target { arm_nothumb } } } }  */
  10 /* { dg-final { scan-assembler-times "rev16ne\\t" 1 { target { arm_nothumb } } } }  */
  11 /* { dg-final { scan-assembler-times "rev16\\t" 2 { target { ! arm_nothumb } } } }  */
  12 /* { dg-final { scan-assembler-times "rev\\t" 2 { target { arm_nothumb } } } }  */
  13 /* { dg-final { scan-assembler-times "revne\\t" 2 { target { arm_nothumb } } } }  */
  14 /* { dg-final { scan-assembler-times "rev\\t" 4 { target { ! arm_nothumb } } } }  */
  15
  16 /* revsh */
  17 short swaps16 (short x)
  18 {
  19   return __builtin_bswap16 (x);
  20 }
  21
  22 extern short foos16 (short);
  23
  24 /* revshne */
  25 short swaps16_cond (short x, int y)
  26 {
  27   short z = x;
  28   if (y)
  29     z = __builtin_bswap16 (x);
  30   return foos16 (z);
  31 }
  32
  33 /* rev16 */
  34 unsigned short swapu16 (unsigned short x)
  35 {
  36   return __builtin_bswap16 (x);
  37 }
  38
  39 extern unsigned short foou16 (unsigned short);
  40
  41 /* rev16ne */
  42 unsigned short swapu16_cond (unsigned short x, int y)
  43 {
  44   unsigned short z = x;
  45   if (y)
  46     z = __builtin_bswap16 (x);
  47   return foou16 (z);
  48 }
  49
  50 /* rev */
  51 int swaps32 (int x) {
  52   return __builtin_bswap32 (x);
  53 }
  54
  55 extern int foos32 (int);
  56
  57 /* revne */
  58 int swaps32_cond (int x, int y)
  59 {
  60   int z = x;
  61   if (y)
  62     z = __builtin_bswap32 (x);
  63   return foos32 (z);
  64 }
  65
  66 /* rev */
  67 unsigned int swapu32 (unsigned int x)
  68 {
  69   return __builtin_bswap32 (x);
  70 }
  71
  72 extern unsigned int foou32 (unsigned int);
  73
  74 /* revne */
  75 unsigned int swapsu2 (unsigned int x, int y)
  76 {
  77   int z = x;
  78   if (y)
  79     z = __builtin_bswap32 (x);
  80   return foou32 (z);
  81 }