From b58fa9067d5d4bb6e1882dd1af97d4bc5d65ce9e Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Thu, 16 Jul 2015 14:57:44 +0300
Subject: [PATCH] Add attributes to TRange.

Also make attributes an OrderedDict, for stable order during
LLVM IR generation.
---
 artiq/compiler/builtins.py | 5 +++++
 artiq/compiler/types.py    | 9 +++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/artiq/compiler/builtins.py b/artiq/compiler/builtins.py
index 5fdd49708..4675c458c 100644
--- a/artiq/compiler/builtins.py
+++ b/artiq/compiler/builtins.py
@@ -36,6 +36,11 @@ class TRange(types.TMono):
         if elt is None:
             elt = types.TVar()
         super().__init__("range", {"elt": elt})
+        self.attributes = OrderedDict([
+            ("start", elt),
+            ("stop",  elt),
+            ("step",  elt),
+        ])
 
 class TException(types.TMono):
     def __init__(self):
diff --git a/artiq/compiler/types.py b/artiq/compiler/types.py
index 4cff68161..5e69c399f 100644
--- a/artiq/compiler/types.py
+++ b/artiq/compiler/types.py
@@ -4,6 +4,7 @@ in :mod:`asttyped`.
 """
 
 import string
+from collections import OrderedDict
 
 def genalnum():
     ident = ["a"]
@@ -80,7 +81,7 @@ class TMono(Type):
     unlike all other :class:`Type` descendants.
     """
 
-    attributes = {}
+    attributes = OrderedDict()
 
     def __init__(self, name, params={}):
         self.name, self.params = name, params
@@ -124,7 +125,7 @@ class TTuple(Type):
     :ivar elts: (list of :class:`Type`) elements
     """
 
-    attributes = {}
+    attributes = OrderedDict()
 
     def __init__(self, elts=[]):
         self.elts = elts
@@ -168,7 +169,7 @@ class TFunction(Type):
         return type
     """
 
-    attributes = {}
+    attributes = OrderedDict()
 
     def __init__(self, args, optargs, ret):
         self.args, self.optargs, self.ret = args, optargs, ret
@@ -220,7 +221,7 @@ class TBuiltin(Type):
 
     def __init__(self, name):
         self.name = name
-        self.attributes = {}
+        self.attributes = OrderedDict()
 
     def find(self):
         return self