diff options
Diffstat (limited to 'gcc-4.8/gcc/testsuite/gcc.target/i386/bmi-tzcnt-2.c')
-rw-r--r-- | gcc-4.8/gcc/testsuite/gcc.target/i386/bmi-tzcnt-2.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi-tzcnt-2.c b/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi-tzcnt-2.c new file mode 100644 index 000000000..1a9235b59 --- /dev/null +++ b/gcc-4.8/gcc/testsuite/gcc.target/i386/bmi-tzcnt-2.c @@ -0,0 +1,36 @@ +/* { dg-do run { target { bmi } } } */ +/* { dg-options "-O2 -mbmi -fno-inline" } */ + +#include <x86intrin.h> + +#include "bmi-check.h" + +int calc_tzcnt_u32 (int src) +{ + int i; + int res = 0; + + while ( (res<32) && ((src&1) == 0)) { + ++res; + src >>= 1; + } + return res; +} + +static void +bmi_test () +{ + unsigned i; + int src = 0xfacec0ff; + int res, res_ref; + + for (i=0; i<5; ++i) { + src = i + src << i; + + res_ref = calc_tzcnt_u32 (src); + res = __tzcnt_u32 (src); + + if (res != res_ref) + abort(); + } +} |