re PR tree-optimization/92119 (ICE: SIGSEGV in contains_struct_check (tree.h:3380...

2019-10-16  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/92119
	* tree-vect-patterns.c (vect_recog_rotate_pattern): Guard
	against missing bswap lhs.

From-SVN: r277057

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 072eb8c..37f42cf 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-10-16  Richard Biener  <rguenther@suse.de>
+
+       PR tree-optimization/92119
+       * tree-vect-patterns.c (vect_recog_rotate_pattern): Guard
+       against missing bswap lhs.
+
 2019-10-16  Richard Sandiford  <richard.sandiford@arm.com>
 
        PR middle-end/92033

diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index f9c7408..385482f 100644 (file)
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -2199,7 +2199,8 @@ vect_recog_rotate_pattern (stmt_vec_info stmt_vinfo, tree *type_out)
       lhs = gimple_call_lhs (last_stmt);
       oprnd0 = gimple_call_arg (last_stmt, 0);
       type = TREE_TYPE (oprnd0);
-      if (TYPE_PRECISION (TREE_TYPE (lhs)) != 16
+      if (!lhs
+         || TYPE_PRECISION (TREE_TYPE (lhs)) != 16
          || TYPE_PRECISION (type) <= 16
          || TREE_CODE (oprnd0) != SSA_NAME
          || BITS_PER_UNIT != 8