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IBM z/OS XL C/C++

An advanced optimizing C and C++ compiler on z/OS to exploit the latest IBM Z architecture.

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IBM z/OS XL C/C++
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White papers

Code optimization with the IBM z/OS XL C/C++ Compiler

This document introduces the capabilities that you can use to maximize the performance of your C/C++ applications.

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Upgrading z/OS XL C/C++ compilers

New features that are introduced in recent releases of the XL C/C++ compiler and their benefits are outlined in this paper.

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SOS info utility for z/OS XL C/C++ compiler

The SOS info utility can be used to obtain options information from an executable file without the need to produce and maintain listing files.

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Articles

IBM C/C++ and Fortran compilers to adopt LLVM open-source infrastructure

Learn about combining IBM's strength in compiler optimization technology with the LLVM open source infrastructure.

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Using inline assembly for z/OS XL C/C++ compiler

Two ways to use high-level languages in low-level programming.

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AutoSIMD compiler optimization for z/OS XL C/C++ programs

Learn about the AutoSIMD optimization introduced in the z/OS 2.2 XL C/C++ compiler.

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Debugging optimized code

Learn about using architecture sections and runtime architecture checks.

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Videos

Get an overview of the IBM z/OS XL C/C++ compiler

This video introduces IBM z/OS XL C/C++, an advanced optimizing C and C++ compiler on z/OS to exploit the latest IBM Z architecture.

Watch the video (03:02)

Learn about the Metal C feature in the IBM z/OS XL C/C++ compiler

This video introduces the Metal C feature in the IBM z/OS XL C/C++ compiler.

Watch the video (02:47)

Other resources

z/OS XL C/C++ documentation library

This library contains a collection of announcement letters and product documentation for z/OS XL C/C++.

Go to the library

IBM Doc Buddy mobile app

Download the app where you can search for the error messages in IBM z/OS XL C/C++.

Go to Doc Buddy (link resides outside IBM)

Fix list for z/OS XL C/C++

A complete listing of releases, refreshes, fix packs and interim fixes sorted by version for IBM z/OS XL C/C++.

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