At each step along the way, your application continues to run well without the need to be recompiled all at once. Use Arm64EC to make an existing app faster on Windows 11 on ArmĪrm64EC enables to you to incrementally transition the code in your existing app from emulated to native. PE architectureįor more detail about how the Arm64EC ABI enables interoperability, see Understanding Arm64EC ABI and assembly code. Similarly, at build time, Arm64EC binaries can link in both 圆4 and Arm64EC libs, while Arm64 binaries can only link in Arm64 libs.
Both architectures can load Arm64X binaries as those contain code for both 圆4 and Arm64. Most operating system code loaded by an 圆4 app running on Windows 11 on Arm will have been compiled as Arm64EC, enabling native performance for that code without the application knowing.Īn 圆4 or Arm64EC process can load and call into both 圆4 and Arm64EC binaries, whereas an Arm64 process can only load Arm64 binaries. The Windows 11 on Arm operating system itself relies heavily on Arm64EC's interoperability to enable running 圆4 applications. However, Arm64EC code is not compatible with code built as Arm64, which uses a different set of software conventions. Even if your app relies on existing dependencies or plugins that don't yet support Arm, you can start to rebuild parts of your app as Arm64EC to gain the benefits of native performance.Īrm64EC guarantees interoperability with 圆4 by following 圆4 software conventions including calling convention, stack usage, data structure layout, and preprocessor definitions. The Arm64EC code in the process runs with native performance, while any 圆4 code runs using emulation that comes built-in with Windows 11.
InteroperabilityĬode built as Arm64EC is interoperable with 圆4 code running under emulation within the same process. It is a Windows 11 feature that requires the use of the Windows 11 SDK and is not available on Windows 10 on Arm. Arm64EC (“Emulation Compatible”) enables you to build new native apps or incrementally transition existing 圆4 apps to take advantage of the native speed and performance possible with Arm-powered devices, including better power consumption, battery life, and accelerated AI & ML workloads.Īrm64EC is a new application binary interface (ABI) for apps running on Arm devices with Windows 11.
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