1 /* { dg-do compile } */ 2 /* { dg-options "-O2 -ftree-vectorize -ffast-math -march=knl" } */ 3 /* { dg-final { scan-assembler-times "vpermpd\[ \\t\]+\[^\{\n\]*%zmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */ 4 5 #define N 1024 6 double d1[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))); 7 double d2[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))); 8 foo()9void foo () 10 { 11 int j; 12 for (j=0; j<N; j++) 13 d1[j] += d2[N-j]; 14 } 15