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.

Read the white paper

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.

Read the white paper

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.

Read the white paper

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.

Read the article

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

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

Read the article

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.

Read the article

Debugging optimized code

Learn about using architecture sections and runtime architecture checks.

Read the article

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++.

Check the fix list

Expert resources to help you succeed

IBM Knowledge Center

Get information about how to maintain and use the product.

Support

Find solutions by using Support Search or open a Support Case.

Community

Get technical tips and insights from others who use this product.