PR tree-optimization/52073

	* tree-vect-stmts.c (vect_mark_relevant): When checking uses of
	a pattern stmt for pattern uses, ignore uses outside of the loop.

	* gcc.c-torture/compile/pr52073.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@183829 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e182b73..26beb11 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-02-02  Jakub Jelinek  <jakub@redhat.com>
+
+       PR tree-optimization/52073
+       * tree-vect-stmts.c (vect_mark_relevant): When checking uses of
+       a pattern stmt for pattern uses, ignore uses outside of the loop.
+
 2012-02-01  Georg-Johann Lay  <avr@gjlay.de>
 
        * config/avr/avr.c: Resolve all AS1 and AS2 macros.

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1b3a406..a6f4fc2 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-02  Jakub Jelinek  <jakub@redhat.com>
+
+       PR tree-optimization/52073
+       * gcc.c-torture/compile/pr52073.c: New test.
+
 2012-02-01  Thomas König  <tkoenig@gcc.gnu.org>
 
        PR fortran/51958

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr52073.c b/gcc/testsuite/gcc.c-torture/compile/pr52073.c
new file mode 100644 (file)
index 0000000..19056e1
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr52073.c
@@ -0,0 +1,28 @@
+/* PR tree-optimization/52073 */
+
+int a, b, c, d, e, f;
+
+void
+foo (int x)
+{
+  e = 1;
+  for (;;)
+    {
+      int g = c;
+      if (x)
+       {
+         if (e)
+           continue;
+         while (a)
+           --f;
+       }
+      else
+       for (b = 5; b; b--)
+         {
+           d = g;
+           g = 0 == d;
+         }
+      if (!g)
+       x = 0;
+    }
+}

diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 8e2b5fe..8532fd8 100644 (file)
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -150,6 +150,8 @@ vect_mark_relevant (VEC(gimple,heap) **worklist, gimple stmt,
           use_operand_p use_p;
           gimple use_stmt;
           tree lhs;
+         loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+         struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
 
           if (is_gimple_assign (stmt))
             lhs = gimple_assign_lhs (stmt);
@@ -166,6 +168,9 @@ vect_mark_relevant (VEC(gimple,heap) **worklist, gimple stmt,
                  continue;
                use_stmt = USE_STMT (use_p);
 
+               if (!flow_bb_inside_loop_p (loop, gimple_bb (use_stmt)))
+                 continue;
+
                if (vinfo_for_stmt (use_stmt)
                    && STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (use_stmt)))
                  {