[PATCH, i386, AVX-512] Fix runtime test for kunpck intrinsic.

[Kirill Yukhin]

Hello,
It looks like reference value calculations use operands in wrong order.
Patch in the bottom makes test pass on SDE.

gcc/testsuite/
        * gcc.target/i386/avx512f-klogic-2.c: Fix calculation of reference
        value.

Will check into main trunk tomorrow.

--
Thanks, K

commit d6fe7376e4ce845b4330b45514fded7b2d890573
Author: Kirill Yukhin <kirill.yuk...@gmail.com>
Date:   Mon Aug 22 18:34:52 2016 +0300

    AVX-512. Fix operands order in kunpack check.

diff --git a/gcc/testsuite/gcc.target/i386/avx512f-klogic-2.c 
b/gcc/testsuite/gcc.target/i386/avx512f-klogic-2.c
index feff955..ec09e4c 100644
--- a/gcc/testsuite/gcc.target/i386/avx512f-klogic-2.c
+++ b/gcc/testsuite/gcc.target/i386/avx512f-klogic-2.c
@@ -51,7 +51,7 @@ avx512f_test (void)
 
   dst = _mm512_kunpackb (src1, src2);
   x = _mm512_mask_add_ps (x, dst, x, x);
-  dst_ref = ((src2 << 8) | src1) & 0xFFFF;
+  dst_ref = ((src1 << 8) | src2) & 0xFFFF;
 
   if (dst != dst_ref)
     abort ();