| /* { dg-do compile } */ | |
| /* { dg-options "-O2 -march=core2" } */ | |
| unsigned int | |
| __attribute__ ((target("arch=haswell"))) | |
| __x86_rdrand(void) | |
| { | |
| unsigned int retries = 100; | |
| unsigned int val; | |
| while (__builtin_ia32_rdrand32_step(&val) == 0) | |
| if (--retries == 0) | |
| return 0; | |
| return val; | |
| } |