arm64ec-pc-windows-msvc
Tier: 3
Arm64EC ("Emulation Compatible") for mixed architecture (AArch64 and x86_64) applications on AArch64 Windows 11. See https://learn.microsoft.com/en-us/windows/arm/arm64ec.
Target maintainers
Requirements
Target only supports cross-compilation, core and alloc are supported but
std is not.
Builds Arm64EC static and dynamic libraries and executables which can be run on AArch64 Windows 11 devices. Arm64EC static libraries can also be linked into Arm64X dynamic libraries and executables.
Uses arm64ec as its target_arch - code built for Arm64EC must be compatible
with x86_64 code (e.g., same structure layouts, function signatures, etc.) but
use AArch64 intrinsics.
Only supported backend is LLVM 18 (or above).
Building the target
You can build Rust with support for the targets by adding it to the target
list in config.toml and disabling std:
[build]
target = [ "arm64ec-pc-windows-msvc" ]
[target.arm64ec-pc-windows-msvc]
no-std = true
Building Rust programs
Rust does not yet ship pre-compiled artifacts for this target. To compile for
this target, you will either need to build Rust with the target enabled (see
"Building the target" above), or build your own copy of core by using
build-std or similar.
Testing
Tests can be run on AArch64 Windows 11 devices.
Since this is a no_std target, the Rust test suite is not supported.
Cross-compilation toolchains and C code
C code can be built using the Arm64-targetting MSVC toolchain.
To compile:
cl /arm64EC /c ...
To link:
link /MACHINE:ARM64EC ...
Further reading: https://learn.microsoft.com/en-us/windows/arm/arm64ec-build