analyzer: handle vector types (PR 93350)

gcc/analyzer/ChangeLog:
	PR analyzer/93350
	* region-model.cc (region_model::get_lvalue_1):
	Handle BIT_FIELD_REF.
	(make_region_for_type): Handle VECTOR_TYPE.

gcc/testsuite/ChangeLog:
	PR analyzer/93350
	* gcc.dg/analyzer/torture/pr93350.c: New test.

gcc/analyzer/ChangeLog

 2020-02-10  David Malcolm  <dmalcolm@redhat.com>
 
+	PR analyzer/93350
+	* region-model.cc (region_model::get_lvalue_1):
+	Handle BIT_FIELD_REF.
+	(make_region_for_type): Handle VECTOR_TYPE.
+
+2020-02-10  David Malcolm  <dmalcolm@redhat.com>
+
 	PR analyzer/93647
 	* diagnostic-manager.cc
 	(diagnostic_manager::prune_for_sm_diagnostic): Bulletproof against

gcc/analyzer/region-model.cc

@@ -4635,6 +4635,14 @@ region_model::get_lvalue_1 (path_var pv, region_model_context *ctxt)
       }
       break;
 
+    case BIT_FIELD_REF:
+      {
+	/* For now, create a view, as if a cast, ignoring the bit positions.  */
+	tree obj = TREE_OPERAND (expr, 0);
+	return get_or_create_view (get_lvalue (obj, ctxt), TREE_TYPE (expr));
+      };
+      break;
+
     case MEM_REF:
       {
 	tree ptr = TREE_OPERAND (expr, 0);
@@ -6008,7 +6016,8 @@ make_region_for_type (region_id parent_rid, tree type)
   if (INTEGRAL_TYPE_P (type)
       || SCALAR_FLOAT_TYPE_P (type)
       || POINTER_TYPE_P (type)
-      || TREE_CODE (type) == COMPLEX_TYPE)
+      || TREE_CODE (type) == COMPLEX_TYPE
+      || TREE_CODE (type) == VECTOR_TYPE)
     return new primitive_region (parent_rid, type);
 
   if (TREE_CODE (type) == RECORD_TYPE)

gcc/testsuite/ChangeLog

 2020-02-10  David Malcolm  <dmalcolm@redhat.com>
 
+	PR analyzer/93350
+	* gcc.dg/analyzer/torture/pr93350.c: New test.
+
+2020-02-10  David Malcolm  <dmalcolm@redhat.com>
+
 	PR analyzer/93647
 	* gcc.dg/analyzer/torture/pr93647.c: New test.
 

gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c

+/* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-Wno-psabi" } */
+
+typedef __INT32_TYPE__   int32_t;
+typedef int32_t vnx4si __attribute__((vector_size (32)));
+
+__attribute__((noipa))
+vnx4si foo(int a, int b)
+{
+  return (vnx4si) { 1, 2, 3, 4, 5, 6, a, b };
+}