Add isLayoutIdentical

llvm/core.py

@@ -895,6 +895,10 @@ class StructType(Type):
     def is_opaque(self):
         return self._ptr.isOpaque()
 
+    def is_layout_identical(self, other):
+        return self._ptr.isLayoutIdentical(other._ptr)
+
+
 class ArrayType(Type):
     """Represents an array type."""
     _type_ = api.llvm.ArrayType

llvm/test_llvmpy.py

@@ -1245,6 +1245,18 @@ class TestNamedMetaData(TestCase):
 
 tests.append(TestNamedMetaData)
 
+
+# ---------------------------------------------------------------------------
+
+class TestStruct(TestCase):
+    def test_struct_identical(self):
+        m = Module.new('test_struct_identical')
+        ta = Type.struct([Type.int(32), Type.float()], name='ta')
+        tb = Type.struct([Type.int(32), Type.float()])
+        self.assertTrue(ta.is_layout_identical(tb))
+
+tests.append(TestStruct)
+
 # ---------------------------------------------------------------------------
 
 def run(verbosity=1):

llvmpy/src/Type.py

@@ -214,6 +214,8 @@ class StructType:
                              cast(bool, Bool),      # is packed
                              ).require_only(2)
 
+    isLayoutIdentical = Method(cast(Bool, bool), # identical?
+                               ptr(StructType))  # other
 
     isValidElementType = StaticMethod(cast(Bool, bool), ptr(Type))