Vectorized since GCC 6.
Tested on x86_64-unknown-linux-gnu, applied.
Richard.
2016-06-08 Richard Biener <rguent...@suse.de>
* gcc.dg/vect/slp-44.c: New testcase.
Index: gcc/testsuite/gcc.dg/vect/slp-44.c
===================================================================
--- gcc/testsuite/gcc.dg/vect/slp-44.c (revision 0)
+++ gcc/testsuite/gcc.dg/vect/slp-44.c (working copy)
@@ -0,0 +1,25 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+void IMB_double_fast_x (int * __restrict__ destf,
+ int * __restrict__ dest, int y,
+ int * __restrict__ p1f)
+{
+ int i;
+ for (i = y; i > 0; i--)
+ {
+ *dest++ = 0;
+ destf[0] = p1f[0];
+ destf[1] = p1f[1];
+ destf[2] = p1f[2];
+ destf[3] = p1f[3];
+ destf[4] = p1f[8];
+ destf[5] = p1f[9];
+ destf[6] = p1f[10];
+ destf[7] = p1f[11];
+ destf += 8;
+ p1f += 12;
+ }
+}
+
+/* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target {
vect_hw_misalign && vect_perm } } } } */
