diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/powerpc/optimize-bswapsi-2.c')
-rw-r--r-- | gcc/testsuite/gcc.target/powerpc/optimize-bswapsi-2.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/powerpc/optimize-bswapsi-2.c b/gcc/testsuite/gcc.target/powerpc/optimize-bswapsi-2.c new file mode 100644 index 00000000000..34cc8236fbc --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/optimize-bswapsi-2.c @@ -0,0 +1,55 @@ +/* { dg-require-effective-target stdint_types } */ +/* { dg-options "-O2 -mcpu=power5" } */ + +#include <stdint.h> + +/* This is a clone of gcc-dg/optimize-bswapsi-1.c, redone to use load and stores + to test whether lwbrx/stwbrx is generated for normal power systems. */ + +#define __const_swab32(x) ((uint32_t)( \ + (((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | \ + (((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | \ + (((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \ + (((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24))) + +/* This byte swap implementation is used by the Linux kernel and the + GNU C library. */ + +uint32_t +swap32_a_load (uint32_t *in) +{ + return __const_swab32 (*in); +} + +/* The OpenSSH byte swap implementation. */ +uint32_t +swap32_b_load (uint32_t *in) +{ + uint32_t a; + + a = (*in << 16) | (*in >> 16); + a = ((a & 0x00ff00ff) << 8) | ((a & 0xff00ff00) >> 8); + + return a; +} + +void +swap32_a_store (uint32_t *out, uint32_t in) +{ + *out = __const_swab32 (in); +} + +/* The OpenSSH byte swap implementation. */ +void +swap32_b_store (uint32_t *out, uint32_t in) +{ + uint32_t a; + + a = (in << 16) | (in >> 16); + a = ((a & 0x00ff00ff) << 8) | ((a & 0xff00ff00) >> 8); + + *out = a; +} + +/* { dg-final { scan-assembler-times "lwbrx" 2 } } */ +/* { dg-final { scan-assembler-times "stwbrx" 2 } } */ |