[committed] analyzer: handle vector types (PR 93350)

Message ID 20200210231709.32370-1-dmalcolm@redhat.com
State New
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Series
  • [committed] analyzer: handle vector types (PR 93350)
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Commit Message

David Malcolm Feb. 10, 2020, 11:17 p.m.
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to master as r10-6567-ge87deb37649cfe480217fc83c8d56fe925600f93.

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/region-model.cc                    | 11 ++++++++++-
 gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c | 11 +++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.dg/analyzer/torture/pr93350.c

-- 
2.21.0

Patch

diff --git a/gcc/analyzer/region-model.cc b/gcc/analyzer/region-model.cc
index fd82360cc6e..ae810f5eb4b 100644
--- a/gcc/analyzer/region-model.cc
+++ b/gcc/analyzer/region-model.cc
@@ -4662,6 +4662,14 @@  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);
@@ -6035,7 +6043,8 @@  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/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 };
+}