--- title: Devirtualization and Static Polymorphism | daily.dev description: Virtual dispatch in C++ enables runtime polymorphism but introduces overhead through vtable indirection, larger object sizes, and missed inlining... canonical: https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Devirtualization and Static Polymorphism | daily.dev og:description: Virtual dispatch in C++ enables runtime polymorphism but introduces overhead through vtable indirection, larger object sizes, and missed inlining... og:url: https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl og:image: https://api.daily.dev/og/posts/sHj1PH5Cl.png og:image:alt: Devirtualization and Static Polymorphism og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Devirtualization and Static Polymorphism **[C\+\+](https://daily.dev/sources/isocpp)** · 6 min read · 0 upvotes · 0 comments ## Summary Virtual dispatch in C++ enables runtime polymorphism but introduces overhead through vtable indirection, larger object sizes, and missed inlining opportunities. Compilers can sometimes devirtualize calls automatically using flags like -fwhole-program and -flto, or via the final keyword. When devirtualization isn't possible, static polymorphism via CRTP (Curiously Recurring Template Pattern) resolves calls at compile time with zero runtime cost. C++23's 'deducing this' feature offers a cleaner alternative to CRTP by templating only the member function rather than the entire class, achieving the same optimized output without the boilerplate. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Static Polymorphy in C\+\+](https://daily.dev/posts/static-polymorphy-in-c--3rtmrvteu) · Jacek Galowicz · 0 upvotes · 0 comments - [Beyond Virtual Functions: High-Performance Polymorphism with C\+\+17 std::variant and std::visit](https://daily.dev/posts/beyond-virtual-functions-high-performance-polymorphism-with-c-17-std-variant-and-std-visit-h29ex98g7) · Towards Dev · 0 upvotes · 0 comments - [C\+\+26: std::polymorphic](https://daily.dev/posts/c-26-std-polymorphic-zsy0pbvxy) · Sandor Dargo · 1 upvotes · 0 comments --- Tags: [#c++](https://daily.dev/tags/c++), [#compiler-optimization](https://daily.dev/tags/compiler-optimization) [View this post on daily.dev](https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Devirtualization and Static Polymorphism","url":"https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl"},"datePublished":"2026-04-16T19:58:44.614Z","dateModified":"2026-04-16T19:59:09.345Z","description":"Virtual dispatch in C++ enables runtime polymorphism but introduces overhead through vtable indirection, larger object sizes, and missed inlining...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9f4135231637fbacb898c20236e6dbf6?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9f4135231637fbacb898c20236e6dbf6?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"C++","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"C++","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/c96d1356acb34a8d982064453dcfeb20","url":"https://daily.dev/sources/isocpp"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/devirtualization-and-static-polymorphism-shj1ph5cl","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"c++,compiler-optimization","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"C++","item":"https://daily.dev/sources/isocpp"},{"@type":"ListItem","position":3,"name":"Devirtualization and Static Polymorphism"}]} ```