Merge pull request #6520 from ethereum/addAssertForLoopDeadCode

Add assertion that DeadCodeEliminator needs ForLoopInitRewriter.

test/libyul/YulOptimizerTest.cpp

@@ -192,6 +192,7 @@ bool YulOptimizerTest::run(ostream& _stream, string const& _linePrefix, bool con
 		disambiguate();
 		NameDispenser nameDispenser{*m_dialect, *m_ast};
 		ExpressionSplitter{*m_dialect, nameDispenser}(*m_ast);
+		ForLoopInitRewriter{}(*m_ast);
 		CommonSubexpressionEliminator{*m_dialect}(*m_ast);
 		ExpressionSimplifier::run(*m_dialect, *m_ast);
 		UnusedPruner::runUntilStabilised(*m_dialect, *m_ast);

test/libyul/yulOptimizerTests/fullSimplify/inside_for.yul

@@ -6,8 +6,8 @@
 // step: fullSimplify
 // ----
 // {
+//     let a := 10
 //     for {
-//         let a := 10
 //     }
 //     iszero(iszero(a))
 //     {