| /* { dg-do run } */ |
| /* { dg-options "-O3" } */ |
| /* { dg-require-effective-target lp64 } */ |
| /* { dg-require-effective-target ppc_cpu_supports_hw } */ |
| |
| #define NO_WARN_X86_INTRINSICS 1 |
| #include <x86intrin.h> |
| #include "bmi2-check.h" |
| |
| __attribute__((noinline)) |
| unsigned |
| calc_bzhi_u32 (unsigned a, int l) |
| { |
| unsigned res = a; |
| int i; |
| for (i = 0; i < 32 - l; ++i) |
| res &= ~(1 << (31 - i)); |
| |
| return res; |
| } |
| |
| static void |
| bmi2_test () |
| { |
| unsigned i; |
| unsigned src = 0xce7ace0f; |
| unsigned res, res_ref; |
| |
| for (i = 0; i < 5; ++i) { |
| src = src * (i + 1); |
| |
| res_ref = calc_bzhi_u32 (src, i * 2); |
| res = _bzhi_u32 (src, i * 2); |
| |
| if (res != res_ref) |
| abort(); |
| } |
| } |