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-rw-r--r--miasm2/ir/ir.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/miasm2/ir/ir.py b/miasm2/ir/ir.py
index 6dbf7835..986e5d56 100644
--- a/miasm2/ir/ir.py
+++ b/miasm2/ir/ir.py
@@ -258,6 +258,8 @@ class IRBlock(object):
     Stand for an intermediate representation  basic block.
     """
 
+    __slots__ = ["label", "_assignments", "_dst", "_dst_linenb"]
+
     def __init__(self, label, irs):
         """
         @label: AsmLabel of the IR basic block
@@ -269,7 +271,6 @@ class IRBlock(object):
         for assignblk in irs:
             assert isinstance(assignblk, AssignBlock)
         self._assignments = tuple(irs)
-        self.except_automod = True
         self._dst = None
         self._dst_linenb = None