From 111eaa1e9ba4bea0e98d92b6d187ffa203318a99 Mon Sep 17 00:00:00 2001
From: chriseth <chris@ethereum.org>
Date: Thu, 26 Nov 2020 17:38:01 +0100
Subject: [PATCH] Superspeed.

---
 libyul/optimiser/CommonSubexpressionEliminator.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libyul/optimiser/CommonSubexpressionEliminator.cpp b/libyul/optimiser/CommonSubexpressionEliminator.cpp
index 2f80e7bc4..6a739618c 100644
--- a/libyul/optimiser/CommonSubexpressionEliminator.cpp
+++ b/libyul/optimiser/CommonSubexpressionEliminator.cpp
@@ -103,9 +103,9 @@ void CommonSubexpressionEliminator::visit(Expression& _e)
 		for (auto const& [variable, value]: m_value)
 		{
 			assertThrow(value.value, OptimizerException, "");
-			assertThrow(inScope(variable), OptimizerException, "");
 			if (SyntacticallyEqual{}(_e, *value.value))
 			{
+				assertThrow(inScope(variable), OptimizerException, "");
 				_e = Identifier{locationOf(_e), variable};
 				break;
 			}