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Accelerating performance of Advanced Encryption Standard applications XL compilers on Power8

Originally posted by: Anh Tuyen Tran Advanced Encryption Standard (AES) is a US government standard for encryption, and is widely used by the US government and industries around the world. It protects classified information and sensitive data. IBM XL compilers for C/C++ and Fortran provide...

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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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A compiler option that helps debug optimized code

Originally posted by: melaniejs Debugging optimized code has always been a challenging task, because it could make the program state not available to debuggers. Optimization can change the sequence of operations, add or remove code, change variable data locations, and perform other...

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A new test selection technique that uses IBM XL C/C++ and Fortran compilers to build smarter test environments

Originally posted by: melaniejs Igor Todorovski, Jean Saad, and Francesco Cassullo introduce a test selection technique to reduce the number of test cases used for regression testing without degrading test coverage. It uses profile data from the function tracing feature (functrace) of the...

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New XL compiler exercises

Originally posted by: melaniejs Check out new exercises in the Power sandbox. You can find them here Experience new features available with the latest XL C/C++ compiler including introduction to C++11, the benefits of C++11, compiling with a list of options defined in a file, and...

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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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Compiler utilization tracking in your organization

Originally posted by: melaniejs XL Fortran 13.1 provides a new utilization tracking and reporting feature to help you understand the compiler utilization within your organization. You use this feature to help determine whether your organization’s use of the compiler matches your compiler...

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Fine tune your optimization with the new -qassert=contiguous suboption

Originally posted by: dorra When the compiler knows that an array occupies a contiguous block of memory, it can perform optimizations based on memory layout. Explicit shape arrays, assumed-size arrays and allocatable arrays occupy contiguous blocks of memory. For array pointers and assumed...

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Trying out XLF: the Enterprise Sandbox

Originally posted by: dr.dave If you don't already have access to the IBM XL Fortran compiler, you'll no doubt want to try it out. You can either download a free trial version (for AIX or for Linux ) and use it for sixty (60) days, or you can try it in our sandbox . The sandbox...

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