Copy-and-patch

<p>In <a href="/facts/Computing/Kghtm9fX">computing</a>, copy-and-patch compilation is a simple <a href="/facts/Compiler/WNfCDFJe">compiler</a> technique intended for <a href="/facts/Just-in-time_compilation/rEYDsd8l">just-in-time compilation</a> (JIT compilation) that uses <a href="/facts/Pattern_matching/CEwptMs9">pattern matching</a> to match pre-generated templates to parts of an <a href="/facts/Abstract_syntax_tree/73AUK1jI">abstract syntax tree</a> (AST) or <a href="/facts/Bytecode/EPkMFR7M">bytecode</a> stream, and emit corresponding pre-written <a href="/facts/Machine_code/bgdQ1Fxf">machine code</a> fragments that are then <a href="/facts/Patch_(computing)/sIHVBPls">patched</a> to insert <a href="/facts/Memory_address/7EsUmbea">memory addresses</a>, <a href="/facts/Processor_register/32RvbUdz">register addresses</a>, constants and other parameters to produce executable code. Code not matched by templates can be either be interpreted in the normal way, or code created to directly call <a href="/facts/Interpreter_(computing)/JB85fbyb">interpreter</a> code.
</p>

Copy-and-patch open-in-new

Copy-and-patch