PR tree-optimization/30771

        * tree-vect-analyze.c (vect_determine_vectorization_factor): Traverse
        also phi nodes.
        (vect_analyze_operations): Induction phis can now be marked as
        used_in_loop.
        (vect_mark_stmts_to_be_vectorized): No special treatment for phis.
        Update documentation accordingly.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121950 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/pr30771.c b/gcc/testsuite/gcc.dg/vect/pr30771.c
new file mode 100644
index 00000000000..9371f96d918
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr30771.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_int } */
+
+int a[128];
+
+int
+main()
+{
+  short i;
+
+  for (i=0; i<64; i++){
+    a[i] = (int)i;
+  }
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */