[PATCH, rs6000, testsuite] Fix PR87306

    PR target/87306
    * gcc.dg/vect/bb-slp-pow-1.c: Modify to reflect that
    the loop is not vectorized on POWER unless hardware
    misaligned loads are available.

From-SVN: r268003

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d662e2a90a2c9c331a034d6dfd8a8895861d9d75..cd20207333ac06977a95180ba52f7b61a4cdc250 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2019-01-17  Kewen Lin  <linkw@gcc.gnu.org>
+
+       PR target/87306
+       * gcc.dg/vect/bb-slp-pow-1.c: Modify to reflect that the loop is not
+       vectorized on POWER unless hardware misaligned loads are available.
+
 2019-01-16  David Malcolm  <dmalcolm@redhat.com>
 
        PR target/88861

diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-pow-1.c b/gcc/testsuite/gcc.dg/vect/bb-slp-pow-1.c
index 5a05bd493126ba54bc1331ec9b28c49af8f8a3de..cfe654e813638c0d71dac29c6e77a3f699c0672d 100644 (file)
--- a/gcc/testsuite/gcc.dg/vect/bb-slp-pow-1.c
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pow-1.c
@@ -25,4 +25,8 @@ main (void)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump-times "basic block vectorized" 1 "slp2" } } */
+/* On older powerpc hardware (POWER7 and earlier), the default flag
+   -mno-allow-movmisalign prevents vectorization.  On POWER8 and later,
+   when vect_hw_misalign is true, vectorization occurs.  */
+
+/* { dg-final { scan-tree-dump-times "basic block vectorized" 1 "slp2" { target {{ ! powerpc*-*-* } || { powerpc*-*-* && vect_hw_misalign }} } } } */