tree-optimization/93661 properly guard tree_to_poly_int64

2020-02-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/93661
	PR tree-optimization/93662
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Properly guard
	tree_to_poly_int64.
	* tree-sra.c (get_access_for_expr): Likewise.

	* gcc.dg/pr93661.c: New testcase.

gcc/ChangeLog

+2020-02-11  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/93661
+	PR tree-optimization/93662
+	* tree-ssa-sccvn.c (vn_reference_lookup_3): Properly guard
+	tree_to_poly_int64.
+	* tree-sra.c (get_access_for_expr): Likewise.
+
 2020-02-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/93637

gcc/testsuite/ChangeLog

+2020-02-11  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/93661
+	PR tree-optimization/93662
+	* gcc.dg/pr93661.c: New testcase.
+
 2020-02-12  Patrick Palka  <ppalka@redhat.com>
 
 	PR c++/69448

gcc/tree-sra.c

@@ -3605,8 +3605,10 @@ get_access_for_expr (tree expr)
 
   if (tree basesize = DECL_SIZE (base))
     {
-      poly_int64 sz = tree_to_poly_int64 (basesize);
-      if (offset < 0 || known_le (sz, offset))
+      poly_int64 sz;
+      if (offset < 0
+	  || !poly_int_tree_p (basesize, &sz)
+	  || known_le (sz, offset))
 	return NULL;
     }
 

gcc/tree-ssa-sccvn.c

@@ -2504,6 +2504,7 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *data_,
       /* For now handle clearing memory with partial defs.  */
       else if (known_eq (ref->size, maxsize)
 	       && integer_zerop (gimple_call_arg (def_stmt, 1))
+	       && tree_fits_poly_int64_p (len)
 	       && tree_to_poly_int64 (len).is_constant (&leni)
 	       && offset.is_constant (&offseti)
 	       && offset2.is_constant (&offset2i)