1 /* { dg-do assemble { target { ! ia32 } } } */
2 /* { dg-require-effective-target avx512f } */
3 /* { dg-options "-O2 -mavx512f" } */
4 
5 #include <immintrin.h>
6 
7 register __m512d z asm ("zmm16"); /* { dg-warning "call-clobbered register used for global register variable" } */
8 
foo()9 __m128d foo ()
10 {
11   return _mm256_extractf128_pd (_mm512_extractf64x4_pd(z, 0), 1);
12 }
13