diff options
Diffstat (limited to 'gcc-4.8/gcc/testsuite/gcc.target/i386/bmi2-mulx32-2.c')
-rw-r--r-- | gcc-4.8/gcc/testsuite/gcc.target/i386/bmi2-mulx32-2.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi2-mulx32-2.c b/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi2-mulx32-2.c new file mode 100644 index 000000000..7c99b2dae --- /dev/null +++ b/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi2-mulx32-2.c @@ -0,0 +1,47 @@ +/* { dg-do run { target { bmi2 && { ia32 } } } } */ +/* { dg-options "-mbmi2 -O2" } */ + +#include <x86intrin.h> + +#include "bmi2-check.h" + +__attribute__((noinline)) +unsigned long long +calc_mul_u32 (unsigned volatile a, unsigned b) +{ + unsigned long long res = 0; + int i; + for (i = 0; i < b; ++i) + res += a; + + return res; +} + +__attribute__((noinline, regparm (2))) +unsigned calc_mulx_u32 (unsigned x, unsigned y, unsigned *res_h) +{ + return (unsigned) _mulx_u32 (x, y, res_h); +} + +static void +bmi2_test () +{ + unsigned i; + unsigned a = 0xce7ace0; + unsigned b = 0xfacefff; + unsigned res_l, res_h; + unsigned long long res, res_ref; + + for (i = 0; i < 5; ++i) { + a = a * (i + 1); + b = b / (i + 1); + + res_ref = calc_mul_u32 (a, b); + res_l = calc_mulx_u32 (a, b, &res_h); + + res = ((unsigned long long) res_h << 32) | res_l; + + if (res != res_ref) + abort(); + } +} |