diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/powerpc/ti_math2.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/powerpc/ti_math2.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/powerpc/ti_math2.c b/gcc-4.9/gcc/testsuite/gcc.target/powerpc/ti_math2.c new file mode 100644 index 000000000..b9c03300d --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/powerpc/ti_math2.c @@ -0,0 +1,73 @@ +/* { dg-do run { target { powerpc*-*-* && lp64 } } } */ +/* { dg-options "-O2 -fno-inline" } */ + +union U { + __int128 i128; + struct { + long l1; + long l2; + } s; +}; + +union U u1,u2; + +__int128 +create_128 (long most_sig, long least_sig) +{ + union U u; + +#if __LITTLE_ENDIAN__ + u.s.l1 = least_sig; + u.s.l2 = most_sig; +#else + u.s.l1 = most_sig; + u.s.l2 = least_sig; +#endif + return u.i128; +} + +long most_sig (union U * u) +{ +#if __LITTLE_ENDIAN__ + return (*u).s.l2; +#else + return (*u).s.l1; +#endif +} + +long least_sig (union U * u) +{ +#if __LITTLE_ENDIAN__ + return (*u).s.l1; +#else + return (*u).s.l2; +#endif +} + +__int128 +add_128 (__int128 *ptr, __int128 val) +{ + return (*ptr + val); +} + +__int128 +sub_128 (__int128 *ptr, __int128 val) +{ + return (*ptr - val); +} + +int +main (void) +{ + /* Do a simple add/sub to make sure carry is happening between the dwords + and that dwords are in correct endian order. */ + u1.i128 = create_128 (1, -1); + u2.i128 = add_128 (&u1.i128, 1); + if ((most_sig (&u2) != 2) || (least_sig (&u2) != 0)) + __builtin_abort (); + u2.i128 = sub_128 (&u2.i128, 1); + if ((most_sig (&u2) != 1) || (least_sig (&u2) != -1)) + __builtin_abort (); + return 0; +} + |