1 /* { dg-require-effective-target stdint_types } */
2 /* { dg-require-effective-target lp64 } */
3 /* { dg-options "-O2 -mcpu=power5" } */
4 
5 /* This is a clone of gcc-dg/optimize-bswapdi-1.c, redone to use load and stores
6    to test whether lwbrx/stwbrx is generated for normal power systems.  */
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 
23 uint64_t
swap64_load(uint64_t * in)24 swap64_load (uint64_t *in)
25 {
26   return __const_swab64 (*in);
27 }
28 
29 void
swap64_store(uint64_t * out,uint64_t in)30 swap64_store (uint64_t *out, uint64_t in)
31 {
32   *out = __const_swab64 (in);
33 }
34 
35 /* { dg-final { scan-assembler-times "lwbrx" 2 } } */
36 /* { dg-final { scan-assembler-times "stwbrx" 2 } } */
37