| /* { dg-do run } */ |
| /* { dg-options "-O3 -fno-inline" } */ |
| /* { dg-require-effective-target lp64 } */ |
| /* { dg-require-effective-target ppc_cpu_supports_hw } */ |
| |
| #define NO_WARN_X86_INTRINSICS 1 |
| #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(); |
| } |
| } |