gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-vect-slp.c

   1 /* { dg-do compile } */
   2 /* { dg-additional-options "-fdump-tree-slp-details" } */
   3
   4 #define N 4
   5
   6 int s1[N], s2[N], s3[N];
   7 void escape(int, int, int, int);
   8
   9 void
  10 foo ()
  11 {
  12   int t1, t2, t3, t4;
  13
  14   t1 = s1[0] + s2[0] + s3[0];
  15   t2 = s1[1] + s2[1] + s3[1];
  16   t3 = s1[2] + s2[2] + s3[2];
  17   t4 = s1[3] + s2[3] + s3[3];
  18
  19   s3[0] = t1 - s1[0] * s2[0];
  20   s3[1] = t2 - s1[1] * s2[1];
  21   s3[2] = t3 - s1[2] * s2[2];
  22   s3[3] = t4 - s1[3] * s2[3];
  23
  24   escape (t1, t2, t3, t4);
  25 }
  26
  27 /* { dg-final { scan-tree-dump-not "vectorization is not profitable" "slp2" } } */
  28 /* { dg-final { scan-tree-dump "optimized: basic block" "slp2" } } */