Announcement: IBM z/OS XL C/C++ to adopt LLVM open-source infrastructure

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White papers

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

This document introduces the most important capabilities that you can use to maximize the performance of your application.

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Upgrading z/OS XL C/C++ compilers

New features were introduced in the last few releases of the compiler, and their benefits are outlined in this paper.

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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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Debugging optimized code

Using architecture sections and run-time architecture checks

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

Obtain the options information from an executable file without the need to produce and maintain listing files.

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

Learn about the AutoSIMD optimization introduced in the z/OS V2R2 XL C/C++ compiler.

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Other resources

Learn how to develop applications with IBM Enterprise Metal C for z/OS

This video gives an overview of IBM Enterprise Metal C for z/OS, which provides system program development on z/OS.

Watch the video (02:47)

IBM Doc Buddy mobile app

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

Read the solution brief (link resides outside ibm.com)

z/OS XL C/C++ documentation library

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

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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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