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XLC bug with simple floating point calculation ?! Notes for porting floating point application from GCC to XLC/XLF

Originally posted by: Jinsong JI Good new! The more focused community about XL compilers on POWER is now available at http://ibm.biz/xl-power-compilers . If you are interested in the XL compilers on POWER, you may want to join the new community and subscribe to...

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Are you migrating your application from big endian to little endian? You should read this!

Originally posted by: llindsay When migrating your application from big endian to little endian on the IBM POWER8 platform, there are a number of differences that need to be considered. This can range from vectors, storage association between items of different sizes, long doubles,...

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How to handle table of contents overflow (2)

Originally posted by: AliceYing My previous blog introduces why TOC overflow occurs and what the general solutions are to solve the problem. Now it is time to describe the solutions in detail. Two general solutions As the matter of fact, the best way to handle TOC overflow is to...

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How to handle table of contents overflow (1)

Originally posted by: AliceYing Do you have experience of encountering table of contents (TOC) overflow? If you do, how do you deal with the problem? The IBM XL C compiler provides solutions to solve the problem since version 12. There is also a developerWorks article written by Kit Barton...

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Did you know your C/C++ compiler could do this? Support debugging of applications built for production environments

Originally posted by: rauls Those of us who develop C++ applications for a living, often hit a dilemma when analyzing functional errors. Should I debug my application using a symbolic debugger, or should I just add prints and traces to the code to understand its behavior? Too often...

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xlC++ compiler's C++11 support

Originally posted by: Michael Wong ATTENTION: this blog post is now old information, kept here only for older service compiler information purposes. A new blog will show the new XLC++ 13.1.2 and future compiler's C++ Standard Compliance Status. C++11 (which was codenamed C++0x...

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Performance Gain with Newer XLC Compiler

Originally posted by: Anh Tuyen Tran Programmers put effort into optimizing their applications for performance. Still, performance gain could also be achieved by simply switching to a newer version of IBM compiler. Although improvement might vary depending on the design and...

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Security: Stack Protection in XL Compilers

Originally posted by: DavidNichols Are you concerned about program security? The XL Fortran v13.1 and XL C/C++ v11.1 compilers have a stack protection feature. It is not an active system that protects or denies write access to the stack. Instead, it is a defensive mechanism that can detect...

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Polyhedral-based Loop Optimizations and Dependence Analysis Part 1

Originally posted by: SalemDerisavi Polyhedral model is a linear algebraic model to represent, reason about, and transform loop nests that perform a significant amount of computation on large arrays. These types of loop nests are typically found in High-Performance Computing applications. The...

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