tree-ssa-reassoc.c (sort_by_operand_rank): Skip checking gimple_bb when there is stmt_to_insert.

gcc/ChangeLog:

2016-05-24  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* tree-ssa-reassoc.c (sort_by_operand_rank): Skip checking gimple_bb
	when there is stmt_to_insert.


gcc/testsuite/ChangeLog:

2016-05-24  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.dg/tree-ssa/reassoc-44.c: New test.

From-SVN: r236673

gcc/ChangeLog

+2016-05-24  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
+	* tree-ssa-reassoc.c (sort_by_operand_rank): Skip checking gimple_bb
+	when there is stmt_to_insert.
+
 2016-05-24  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/71147

gcc/testsuite/ChangeLog

+2016-05-24  Kugan Vivekanandarajah  <kuganv@linaro.org>
+
+	* gcc.dg/tree-ssa/reassoc-44.c: New test.
+
 2016-05-24  Pat Haugen  <pthaugen@us.ibm.com>
 
 	PR target/71050

gcc/testsuite/gcc.dg/tree-ssa/reassoc-44.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+unsigned int a;
+int b, c;
+void fn1 ()
+{
+  b = a + c + c;
+}

gcc/tree-ssa-reassoc.c

@@ -519,6 +519,8 @@ sort_by_operand_rank (const void *pa, const void *pb)
 	 See PR60418.  */
       if (!SSA_NAME_IS_DEFAULT_DEF (oea->op)
 	  && !SSA_NAME_IS_DEFAULT_DEF (oeb->op)
+	  && !oea->stmt_to_insert
+	  && !oeb->stmt_to_insert
 	  && SSA_NAME_VERSION (oeb->op) != SSA_NAME_VERSION (oea->op))
 	{
 	  gimple *stmta = SSA_NAME_DEF_STMT (oea->op);