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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -march=z900 -mzarch" } */
   3
   4 #include <stdint.h>
   5
   6 uint64_t u64;
   7 uint32_t u32;
   8 uint16_t u16;
   9
  10 uint64_t
  11 foo64a (uint64_t a)
  12 {
  13   return __builtin_bswap64 (a);
  14 }
  15 /* { dg-final { scan-assembler-times "lrvgr\t%r2,%r2" 1 { target lp64 } } } */
  16
  17 uint64_t
  18 foo64b ()
  19 {
  20   return __builtin_bswap64 (u64);
  21 }
  22 /* { dg-final { scan-assembler-times "lrvg\t%r2,0\\(%r\[0-9\]*\\)" 1 { target lp64 } } } */
  23
  24 void
  25 foo64c (uint64_t a)
  26 {
  27   u64 = __builtin_bswap64 (a);
  28 }
  29 /* { dg-final { scan-assembler-times "strvg\t%r2,0\\(%r\[0-9\]*\\)" 1 { target lp64 } } } */
  30
  31
  32
  33 uint32_t
  34 foo32a (uint32_t a)
  35 {
  36   return __builtin_bswap32 (a);
  37 }
  38 /* { dg-final { scan-assembler-times "lrvr\t%r2,%r2" 1 } } */
  39
  40 uint32_t
  41 foo32b ()
  42 {
  43   return __builtin_bswap32 (u32);
  44 }
  45 /* { dg-final { scan-assembler-times "lrv\t%r2,0\\(%r\[0-9\]*\\)" 1 } } */
  46
  47 void
  48 foo32c (uint32_t a)
  49 {
  50   u32 = __builtin_bswap32 (a);
  51 }
  52 /* { dg-final { scan-assembler-times "strv\t%r2,0\\(%r\[0-9\]*\\)" 1 } } */