The Industry Reference C++ Compiler

Trusted by hundreds of thousands of C/C++ developers for decades, Arm's CPP Compiler has been used to build code shipped in billions of devices. It enables the development of highly efficient products that best utilize all features of Arm Cortex processors and architectures, from Armv6-M to Armv8-A 64-bit Arm.

Features and Benefits

Architectural Accuracy

Arm Compiler for Embedded is developed in close collaboration with Arm’s processor and architecture projects. It provides the earliest, most complete, and most accurate support for the latest Arm cores and architectural extensions.

Real World Performance

Arm Compiler for Embedded is optimized for a wide range of embedded workloads, not just for a single benchmark. This includes workloads running on either bare metal or an embedded RTOS, where responsiveness is a critical factor.

Smaller Code

Arm Compiler for Embedded further improves the space-optimizing performance of Arm C/C++ embedded tool chains, particularly for Cortex-M devices. It combines earlier density-enhancing techniques with new link-time optimizations that remove unused and redundant code.

Safety Qualification

Safety experts TÜV SÜD have qualified Arm Compiler for Embedded FuSa for several industries including automotive (ISO 26262), for development to the most demanding Safety Integrity Levels. Arm qualified compilers provide the long-term stability maintenance needed for modern safety development.

More Features


Arm Compiler for Embedded is developed alongside the Arm SIMD (Single Instruction Multiple Data) architecture extensions such as Neon and SVE. It contains advanced auto-vectorization support, to drive maximum value from these vector architecture extensions.

Language Support

To keep pace with developer needs, C/C++ language specifications are frequently revised and extended. Arm Compiler 6 provides the advanced language support needed by your developers to exploit new and updated language features.

Hand-Tuned C Libraries

Choice of C libraries optimized by Arm over many years for exceptional performance and code density.

Whole Program Optimization

Innovative inter-module link-time code optimization strategies.

Bare-Metal Package

Tailored for C and C++ development of firmware and real-time OS (RTOS) applications.

Get Arm Compiler for Embedded

Access Arm Compiler for Embedded in the software that is right for you.

Arm Keil MDK
Ideal for projects on microcontrollers
Arm Development Studio
Ideal for projects on any Arm architecture-based SoC
Arm Compiler for Embedded FuSa
Ideal for stable branch of compiler standalone for functional safety applications
Target Devices
Target Devices Arm Cortex-M* All Arm cores* All Arm cores**
Host Platforms
Host Platforms Windows Windows, Linux Windows, Linux
Safety Qualification Kit
Safety Qualification Kit Yes, in MDK-Pro Yes
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* Supported cores depends upon edition. Learn more!
** Processor support depends upon safety Compiler branch. Get in touch for more information.

Meet Our Latest Safety Toolchain

Arm Compiler for Embedded FuSa is a qualified C/C++ toolchain, optimized for Arm processors to help you develop safety certified products simpler and faster. It is qualified for the most common safety standards for automotive, industrial, medical, railways and aviation.

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Use Cases

Keil MDK Version 6 Takes Embedded Development to the Next Level

As IoT devices get smarter, developers wrestle with increasing software complexity that requires new development flows for optimized machine learning models and efficient device drivers. Read about the latest release of Keil MDK Version 6, optimized for the entire Arm Cortex-M and Ethos-U processor portfolio and delivering the compute capabilities for today’s microcontrollers.

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Create Top-Performing Software Solutions

Arm Developer Hub

Documentation, tutorials and technical videos from Arm and open-source partners to create top-performing software solutions.

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Talk with an Expert

Get in touch to learn how Arm Compiler for Embedded can accelerate your embedded software development.

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Arm Compiler Spotlight

FuSa Development on Arm Cortex-M

In this insightful webinar, Arm ecosystem partners discuss how software development tools can help achieving a certified product in less time.

How to Avoid Safety-Critical System Failure

Learn about how to prevent the failure of safety-critical systems by following three important steps discussed in this whitepaper.

Faster Code Using Model-Based Design

Learn more about the best practices that Arm and ETAS created for an easy model-based development flow of safety-relevant applications.

Related Products and Services

Explore Other Arm Tools and Software

Arm functional safety run-time-system icon

Functional Safety Run-Time System

FuSa RTS is a set of certified software components to reduce time and effort to achieve final safety certification in a wide range of embedded applications.

Software Test Libraries

Software Test Libraries

Arm's Software Test Libraries provide diagnostic coverage to address functional safety requirements for ISO 26262 and IEC 61508 systems, with flexible execution scheduling minimizing the run-time impact on applications.

Keil MDK Software Development Tool

Keil MDK

For development of Arm-based microcontroller applications, Keil MDK includes all the components to create, build, and debug embedded applications plus software packs to accelerate development.

Arm Development Studio

Arm Development Studio

An end-to-end software development environment for all Arm-based systems, including Arm Compiler, debuggers, IDEs, performance analysis tools, models and middleware.

Arm Compiler for Embedded Resources

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