1  /* { dg-do compile } */
       2  /* { dg-require-effective-target bswap } */
       3  /* { dg-require-effective-target stdint_types } */
       4  /* { dg-options "-O2 -fdump-tree-bswap" } */
       5  /* { dg-additional-options "-march=z900" { target s390*-*-* } } */
       6  
       7  #include <stdint.h>
       8  
       9  extern unsigned char data[4];
      10  
      11  struct uint32_st {
      12    unsigned char u0, u1, u2, u3;
      13  };
      14  
      15  uint32_t read_le32_1 (void)
      16  {
      17    return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
      18  }
      19  
      20  uint32_t read_le32_2 (struct uint32_st data)
      21  {
      22    return data.u0 | (data.u1 << 8) | (data.u2 << 16) | (data.u3 << 24);
      23  }
      24  
      25  uint32_t read_le32_3 (unsigned char *data)
      26  {
      27    return *data | (*(data + 1) << 8) | (*(data + 2) << 16)
      28  	 | (*(data + 3) << 24);
      29  }
      30  
      31  uint32_t read_be32_1 (void)
      32  {
      33    return data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24);
      34  }
      35  
      36  uint32_t read_be32_2 (struct uint32_st data)
      37  {
      38    return data.u3 | (data.u2 << 8) | (data.u1 << 16) | (data.u0 << 24);
      39  }
      40  
      41  uint32_t read_be32_3 (unsigned char *data)
      42  {
      43    return *(data + 3) | (*(data + 2) << 8) | (*(data + 1) << 16)
      44  	 | (*data << 24);
      45  }
      46  
      47  static inline unsigned short
      48  get_unaligned_16_le (unsigned char *p)
      49  {
      50    return p[0] | (p[1] << 8);
      51  }
      52  unsigned int
      53  get_unaligned_32_le (unsigned char *p)
      54  {
      55    return get_unaligned_16_le (p) | (get_unaligned_16_le (p + 2) << 16);
      56  }
      57  
      58  static inline unsigned short
      59  get_unaligned_16_be (unsigned char *p)
      60  {
      61    return p[1] | (p[0] << 8);
      62  }
      63  unsigned int
      64  get_unaligned_32_be (unsigned char *p)
      65  {
      66    return get_unaligned_16_be (p + 2) | (get_unaligned_16_be (p) << 16);
      67  }
      68  
      69  /* { dg-final { scan-tree-dump-times "32 bit load in target endianness found at" 4 "bswap" } } */
      70  /* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 4 "bswap" } } */