gcc/testsuite/gcc.target/i386/intrinsics_3.c

   1 /* Test case to check if intrinsics and function specific target
   2    optimizations work together.  Check if the POPCNT specific intrinsics
   3    in included with popcntintrin.h get enabled by directly including
   4    popcntintrin.h  */
   5
   6 /* { dg-do compile } */
   7 /* { dg-options "-O2 -msse -mno-sse4.1 -mno-sse4.2 -mno-popcnt -std=gnu89" } */
   8
   9 #include <popcntintrin.h>
  10
  11 __attribute__((target("popcnt")))
  12 long long foo(unsigned long long X)
  13 {
  14     return _mm_popcnt_u64 (X);
  15 }