[PATCH] Add missing check for gassign.

[Martin Liška]

Hi.

We should check for gassign before doing gimple_assign_rhs_code and friends.
Ready to be installed after proper testing?

Thanks,
Martin

gcc/ChangeLog:

        * tree-vect-generic.c (expand_vector_condition): Check
        for gassign before inspecting RHS.
---
 gcc/tree-vect-generic.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index fb955bbf3d2..83d399a7898 100644
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -957,8 +957,9 @@ expand_vector_condition (gimple_stmt_iterator *gsi)
 
   if (code == SSA_NAME)
     {
-      gimple *assign = SSA_NAME_DEF_STMT (a);
-      if (TREE_CODE_CLASS (gimple_assign_rhs_code (assign)) == tcc_comparison)
+      gassign *assign = dyn_cast<gassign *> (SSA_NAME_DEF_STMT (a));
+      if (assign != NULL
+         && TREE_CODE_CLASS (gimple_assign_rhs_code (assign)) == 
tcc_comparison)
        {
          a_is_comparison = true;
          a1 = gimple_assign_rhs1 (assign);
--
2.27.0