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-rw-r--r--miasm2/expression/simplifications_explicit.py11
1 files changed, 10 insertions, 1 deletions
diff --git a/miasm2/expression/simplifications_explicit.py b/miasm2/expression/simplifications_explicit.py
index 54e9efc2..4c5dde3e 100644
--- a/miasm2/expression/simplifications_explicit.py
+++ b/miasm2/expression/simplifications_explicit.py
@@ -1,5 +1,6 @@
 from miasm2.expression.modint import size2mask
-from miasm2.expression.expression import ExprInt, ExprCond, ExprCompose
+from miasm2.expression.expression import ExprInt, ExprCond, ExprCompose, \
+    TOK_EQUAL
 
 
 def simp_ext(_, expr):
@@ -154,5 +155,13 @@ def simp_flags(_, expr):
         op_nf, = args
         return ~op_nf
 
+    elif expr.is_op(TOK_EQUAL):
+        arg1, arg2 = args
+        return ExprCond(
+            arg1 - arg2,
+            ExprInt(0, expr.size),
+            ExprInt(1, expr.size),
+        )
+
     return expr