diff --git a/mypyc/primitives/float_ops.py b/mypyc/primitives/float_ops.py
index ad028a901222..3359cf6fe122 100644
--- a/mypyc/primitives/float_ops.py
+++ b/mypyc/primitives/float_ops.py
@@ -2,12 +2,18 @@
 
 from mypyc.ir.ops import ERR_MAGIC
 from mypyc.ir.rtypes import (
-    str_rprimitive, float_rprimitive
+    str_rprimitive, float_rprimitive, object_rprimitive
 )
 from mypyc.primitives.registry import (
-    function_op
+    load_address_op, function_op
 )
 
+# Get the 'builtins.float' type object.
+load_address_op(
+    name='builtins.float',
+    type=object_rprimitive,
+    src='PyFloat_Type')
+
 # float(str)
 function_op(
     name='builtins.float',
diff --git a/mypyc/primitives/tuple_ops.py b/mypyc/primitives/tuple_ops.py
index ce88a4ee0f4d..33f8e331b56d 100644
--- a/mypyc/primitives/tuple_ops.py
+++ b/mypyc/primitives/tuple_ops.py
@@ -9,8 +9,13 @@
     tuple_rprimitive, int_rprimitive, list_rprimitive, object_rprimitive,
     c_pyssize_t_rprimitive, bit_rprimitive
 )
-from mypyc.primitives.registry import method_op, function_op, custom_op
+from mypyc.primitives.registry import load_address_op, method_op, function_op, custom_op
 
+# Get the 'builtins.tuple' type object.
+load_address_op(
+    name='builtins.tuple',
+    type=object_rprimitive,
+    src='PyTuple_Type')
 
 # tuple[index] (for an int index)
 tuple_get_item_op = method_op(
diff --git a/mypyc/test-data/irbuild-dunders.test b/mypyc/test-data/irbuild-dunders.test
index 808617e43889..d06a570aa7b0 100644
--- a/mypyc/test-data/irbuild-dunders.test
+++ b/mypyc/test-data/irbuild-dunders.test
@@ -175,16 +175,13 @@ L0:
 def f(c):
     c :: __main__.C
     r0, r1 :: int
-    r2, r3, r4 :: object
-    r5 :: str
-    r6, r7 :: object
+    r2, r3, r4, r5 :: object
 L0:
     r0 = c.__neg__()
     r1 = c.__invert__()
     r2 = load_address PyLong_Type
     r3 = PyObject_CallFunctionObjArgs(r2, c, 0)
-    r4 = builtins :: module
-    r5 = 'float'
-    r6 = CPyObject_GetAttr(r4, r5)
-    r7 = PyObject_CallFunctionObjArgs(r6, c, 0)
+    r4 = load_address PyFloat_Type
+    r5 = PyObject_CallFunctionObjArgs(r4, c, 0)
     return 1
+
diff --git a/mypyc/test-data/run-python37.test b/mypyc/test-data/run-python37.test
index 5bf2c29263e1..61d428c17a44 100644
--- a/mypyc/test-data/run-python37.test
+++ b/mypyc/test-data/run-python37.test
@@ -70,6 +70,7 @@ class Person4:
 
 @dataclass
 class Person5:
+    weight: float
     friends: Set[str] = field(default_factory=set)
     parents: FrozenSet[str] = frozenset()
 
@@ -122,7 +123,8 @@ assert i8 > i9
 
 assert Person1.__annotations__ == {'age': int, 'name': str}
 assert Person2.__annotations__ == {'age': int, 'name': str}
-assert Person5.__annotations__ == {'friends': set, 'parents': frozenset}
+assert Person5.__annotations__ == {'weight': float, 'friends': set,
+                                       'parents': frozenset}
 
 [file driver.py]
 import sys
diff --git a/mypyc/test-data/run-tuples.test b/mypyc/test-data/run-tuples.test
index 759177342fa9..26b039320844 100644
--- a/mypyc/test-data/run-tuples.test
+++ b/mypyc/test-data/run-tuples.test
@@ -95,6 +95,49 @@ class Sub(NT):
     pass
 assert f(Sub(3, 2)) == 3
 
+-- Ref: https://github.com/mypyc/mypyc/issues/924
+[case testNamedTupleClassSyntax]
+from typing import Dict, List, NamedTuple, Optional, Tuple, Union
+
+class ClassIR: pass
+
+class FuncIR: pass
+
+StealsDescription = Union[bool, List[bool]]
+
+class Record(NamedTuple):
+    st_mtime: float
+    st_size: int
+    is_borrowed: bool
+    hash: str
+    python_path: Tuple[str, ...]
+    type: 'ClassIR'
+    method: FuncIR
+    shadow_method: Optional[FuncIR]
+    classes: Dict[str, 'ClassIR']
+    steals: StealsDescription
+    ordering: Optional[List[int]]
+    extra_int_constants: List[Tuple[int]]
+
+[file driver.py]
+from typing import Optional
+from native import ClassIR, FuncIR, Record
+
+assert Record.__annotations__ == {
+    'st_mtime': float,
+    'st_size': int,
+    'is_borrowed': bool,
+    'hash': str,
+    'python_path': tuple,
+    'type': ClassIR,
+    'method': FuncIR,
+    'shadow_method': type,
+    'classes': dict,
+    'steals': type,
+    'ordering': type,
+    'extra_int_constants': list,
+}, Record.__annotations__
+
 [case testTupleOps]
 from typing import Tuple, List, Any, Optional
 from typing_extensions import Final