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Nikolai Kosjar authored
For expression statements like "(g(g(g(...(g(0))...))))" we reparsed quite much again and again for nothing. The high-level trace for this expression looks like this: parseCastExpression parseTypeId parseAbstractDeclarator parseAbstractCoreDeclarator parseParameterDeclarationClause (--> DEEP) ... parseUnaryExpression ... parseCorePostfixExpression parseTypeId (--> DEEP) parsePrimaryExpression (--> DEEP) Especially parseTypeId is expensive in this case and it's called two times, both from the same token (index). With this patch, we remember for certain ASTs the parse results and re-use them when needed. Change-Id: I013d1c064c655636bc94db408097863b5e183fc2 Task-number: QTCREATORBUG-12252 Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
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