| /* { dg-do run { target { bmi2 && { ! ia32 } } } } */ |
| /* { dg-options "-mbmi2 -O2" } */ |
| |
| #include <x86intrin.h> |
| #include "bmi2-check.h" |
| |
| __attribute__((noinline)) |
| unsigned long long |
| calc_bzhi_u64 (unsigned long long a, int l) |
| { |
| unsigned long long res = a; |
| int i; |
| for (i = 0; i < 64 - l; ++i) |
| res &= ~(1LL << (63 - i)); |
| |
| return res; |
| } |
| |
| static void |
| bmi2_test () |
| { |
| unsigned i; |
| unsigned long long src = 0xce7ace0ce7ace0ff; |
| unsigned long long res, res_ref; |
| |
| for (i = 0; i < 5; ++i) { |
| src = src * (i + 1); |
| |
| res_ref = calc_bzhi_u64 (src, i * 2); |
| res = _bzhi_u64 (src, i * 2); |
| |
| if (res != res_ref) |
| abort(); |
| } |
| } |