gcc/testsuite/gcc.target/sh/pr53568-1.c

   1 /* Check that the bswap32 pattern is generated as swap.b and swap.w
   2    instructions.  */
   3 /* { dg-do compile }  */
   4 /* { dg-options "-O2" } */
   5 /* { dg-final { scan-assembler-times "swap.w" 7 } } */
   6 /* { dg-final { scan-assembler-times "swap.b" 16 } } */
   7 /* { dg-final { scan-assembler-times "extu.w" 2 } } */
   8 /* { dg-final { scan-assembler-times "mov" 1 } } */
   9 /* { dg-final { scan-assembler-not "{shll8|shlr8|shld|shad}" } } */
  10
  11 int
  12 test_func_00 (int a)
  13 {
  14   /* 1x swap.w
  15      2x swap.b  */
  16   return __builtin_bswap32 (a);
  17 }
  18
  19 unsigned int
  20 test_func_01 (unsigned int a)
  21 {
  22   /* 1x swap.w
  23      2x swap.b  */
  24   return __builtin_bswap32 (a);
  25 }
  26
  27 int
  28 test_func_02 (int a)
  29 {
  30   /* 1x swap.w
  31      2x swap.b  */
  32   return (((a >> 0) & 0xFF) << 24)
  33          | (((a >> 8) & 0xFF) << 16)
  34          | (((a >> 16) & 0xFF) << 8)
  35          | (((a >> 24) & 0xFF) << 0);
  36 }
  37
  38 unsigned int
  39 test_func_03 (unsigned int a)
  40 {
  41   /* 1x swap.w
  42      2x swap.b  */
  43   return (((a >> 0) & 0xFF) << 24)
  44          | (((a >> 8) & 0xFF) << 16)
  45          | (((a >> 16) & 0xFF) << 8)
  46          | (((a >> 24) & 0xFF) << 0);
  47 }
  48
  49 int
  50 test_func_04 (int a)
  51 {
  52   /* 1x swap.b
  53      1x extu.w  */
  54   return __builtin_bswap32 (a) >> 16;
  55 }
  56
  57 unsigned short
  58 test_func_05 (unsigned short a)
  59 {
  60   /* 1x swap.b
  61      1x extu.w  */
  62   return __builtin_bswap32 (a) >> 16;
  63 }
  64
  65 long long
  66 test_func_06 (long long a)
  67 {
  68   /* 2x swap.w
  69      4x swap.b  */
  70   return __builtin_bswap64 (a);
  71 }
  72
  73 long long
  74 test_func_07 (long long a)
  75 {
  76   /* 1x swap.w
  77      2x swap.b
  78      1x mov #0,Rn  */
  79   return __builtin_bswap64 (a) >> 32;
  80 }
  81