| /* { dg-require-effective-target stdint_types } */ |
| /* { dg-require-effective-target lp64 } */ |
| /* { dg-options "-O2 -mdejagnu-cpu=power5" } */ |
| |
| /* This is a clone of gcc-dg/optimize-bswapdi-1.c, redone to use load and stores |
| to test whether lwbrx/stwbrx is generated for normal power systems. */ |
| |
| #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-times "lwbrx" 2 } } */ |
| /* { dg-final { scan-assembler-times "stwbrx" 2 } } */ |