gcc/testsuite/gcc.dg/vect/bb-slp-pr69907.c

   1 /* { dg-do compile } */
   2 /* { dg-additional-options "-O3" } */
   3 /* { dg-require-effective-target vect_unpack } */
   4
   5 #include "tree-vect.h"
   6
   7 #if VECTOR_BITS > 512
   8 #define N (VECTOR_BITS * 10 / 16)
   9 #else
  10 #define N 320
  11 #endif
  12
  13 void foo(unsigned *p1, unsigned short *p2)
  14 {
  15   int n;
  16   for (n = 0; n < N; n++)
  17     p1[n] = p2[n * 2];
  18 }
  19
  20 /* Disable for SVE because for long or variable-length vectors we don't
  21    get an unrolled epilogue loop.  */
  22 /* { dg-final { scan-tree-dump "BB vectorization with gaps at the end of a load is not supported" "slp1" { target { ! aarch64_sve } } } } */