Optimize application performance on your IBM Power platforms

IBM® Open XL C/C++ for Linux® on Power is IBM’s next-generation C/C++ compiler, facilitating the creation and maintenance of applications written in C/C++ for use on IBM Power platforms. With full exploitation of the latest Power10 architecture, IBM Open XL C/C++ for Linux on Power can generate code that leverages the capabilities of Power10 to maximize your hardware utilization.

IBM Open XL C/C++ for Linux on Power fully incorporates the Clang and LLVM compiler infrastructure for C/C++ so you can enjoy the combination of open-source technology and IBM's strength in compiler optimization technology. LLVM is an open-source compilation framework that is actively maintained by a large development community, supporting multiple architectures and programming languages. Clang is part of the LLVM compiler infrastructure that provides a language front-end and tooling infrastructure for the LLVM project. 

The infrastructure of IBM Open XL C/C++ for Linux on Power allows you to benefit from modern C/C++ language including C++17 features, common LLVM optimizations and GCC Compiler compatibility.

Legacy IBM XL C/C++ for Linux compilers are still available for use. 

Features

• **Adoption of the Clang and LLVM infrastructures: **Incorporates the Clang and LLVM compiler infrastructure for C/C++. Enables you to enjoy modern C/C++ language features and common LLVM optimization features such as LLVM diagnostic and reporting capabilities.
• **Exploitation of the latest Power10 architecture: **Exploits Power10 architecture. Provides Power10 architecture options, built-in functions and tuned library functions to maximize the hardware ROI.
• **Link Time Optimization: **Provides program optimization during linking. Enables you to take advantage of intermodular optimizations without making any significant changes to the makefiles or build system.
• **Profile Guided Optimization: **Provides compiler optimization technique in computer programming that uses profiling to improve program runtime performance.
• **High-performance libraries: **Provides a set of libraries for high-performance mathematical computing including the Mathematical Acceleration Subsystem and Basic Linear Algebra Subprograms libraries.
• **Optimization reports: **Provides information to help you use compiler features to optimize your applications.
• **Vector programming: **Provides language extensions to support vector multimedia extension (VMX) and vector scalar extension programming.

Benefits

• **Maximize Power hardware ROI: **Capitalize on Power10 architecture, such as Matrix Multiply Accelerator, and maximize your return on investment with full hardware exploitation.
• **Optimize application performance: **Take advantage of both common LLVM optimizations and IBM’s industry-leading technologies to improve workload performance.
• **Improve developer productivity: **Provide Clang/LLVM diagnostic and reporting capabilities and offer various LLVM-based utilities to make your development work more efficient.
• **Enable continuous delivery: **Experience faster build speed to shorten the development cycle, enable faster iterations and provide continuous delivery for business-critical applications on Linux.
• **Accelerate shift to hybrid cloud model: **Offer new monthly licenses per the virtual process core charge unit. Enable license of IBM Open XL compilers on virtual servers per the needed capacities when you transition to hybrid cloud.
• **Obtain world-class IBM support: **Comes with superior IBM service and support.