1/* { dg-require-effective-target stdint_types } */ 2/* { dg-require-effective-target lp64 } */ 3/* { dg-options "-O2 -mcpu=power7" } */ 4 5/* This is a clone of gcc-dg/optimize-bswapdi-1.c, redone to use load and stores 6 to test whether ldbrx/stdbrx is generated for power7. */ 7 8#include <stdint.h> 9#define __const_swab64(x) ((uint64_t)( \ 10 (((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \ 11 (((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \ 12 (((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \ 13 (((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \ 14 (((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \ 15 (((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \ 16 (((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \ 17 (((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56))) 18 19 20/* This byte swap implementation is used by the Linux kernel and the 21 GNU C library. */ 22 23uint64_t 24swap64_load (uint64_t *in) 25{ 26 return __const_swab64 (*in); 27} 28 29void 30swap64_store (uint64_t *out, uint64_t in) 31{ 32 *out = __const_swab64 (in); 33} 34 35/* { dg-final { scan-assembler "ldbrx" } } */ 36/* { dg-final { scan-assembler "stdbrx" } } */ 37