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