From: David Malcolm <dmalcolm@redhat.com>
Date: Fri, 7 Feb 2020 10:49:24 +0000 (-0500)
Subject: analyzer: handle vector types (PR 93350)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e87deb37649cfe480217fc83c8d56fe925600f93;p=gcc.git

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.
---

diff --git a/gcc/analyzer/ChangeLog b/gcc/analyzer/ChangeLog
index 0960a49eb62..e3f7c43948a 100644
--- a/gcc/analyzer/ChangeLog
+++ b/gcc/analyzer/ChangeLog
@@ -1,3 +1,10 @@
+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
diff --git a/gcc/analyzer/region-model.cc b/gcc/analyzer/region-model.cc
index a88a85d70ab..85155602cb1 100644
--- a/gcc/analyzer/region-model.cc
+++ b/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)
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index bb7ecda48e8..290bd8afdfa 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+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
diff --git a/gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c b/gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c
new file mode 100644
index 00000000000..1799da1936c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c
@@ -0,0 +1,11 @@
+/* { 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 };
+}