Subversion Repositories openrisc_2011-10-31

/* { dg-require-effective-target stdint_types } */

/* { dg-require-effective-target lp64 } */

/* { dg-options "-O2 -mcpu=power7" } */

/* This is a clone of gcc-dg/optimize-bswapdi-1.c, redone to use load and stores

   to test whether ldbrx/stdbrx is generated for power7.  */

#include <stdint.h>

#define __const_swab64(x) ((uint64_t)(                                          \

        (((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) |             \

        (((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) |             \

        (((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) |             \

        (((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) <<  8) |             \

        (((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >>  8) |             \

        (((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) |             \

        (((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) |             \

        (((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))

/* This byte swap implementation is used by the Linux kernel and the

   GNU C library.  */

uint64_t

swap64_load (uint64_t *in)

{

  return __const_swab64 (*in);

}

void

swap64_store (uint64_t *out, uint64_t in)

{

  *out = __const_swab64 (in);

}

/* { dg-final { scan-assembler "ldbrx" } } */

/* { dg-final { scan-assembler "stdbrx" } } */