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.