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All posts in Help the Compiler

Loop Optimizations: taking matters into your hands

Loop Optimizations: taking matters into your hands

Posted on October 9, 2021December 5, 2022Author Ivica BogosavljevićPosted in Help the Compiler, Performance, Toolchain and PerformanceLeave a Reply

We try to answer two questions related to compiler optimizations: how can you help the compiler do a better job and when does it make sense to do the compiler optimizations manually.

Loop Optimizations: how does the compiler do it?

Loop Optimizations: how does the compiler do it?

Posted on September 19, 2021March 19, 2022Author Ivica BogosavljevićPosted in Help the Compiler, Performance, Toolchain and Performance2 Replies

We investigate what are the techniques your compiler employs to make your loop run faster.

Flexibility and Performance

Flexibility and Performance

Posted on March 25, 2021April 28, 2022Author Ivica BogosavljevićPosted in C++ Performance, Help the Compiler, Performance, Standard Library and PerformanceLeave a Reply

In this post we talk about how to write code that is both flexible and fast!

Make your programs run faster: avoid function calls

Make your programs run faster: avoid function calls

Posted on June 12, 2020March 19, 2022Author Ivica BogosavljevićPosted in Help the Compiler, Low Level Performance, Performance, Toolchain and PerformanceLeave a Reply

Function calls are not cheap operations and for time critical code it is better to avoid them. This article explores techniques you can use to avoid function calls thus speeding up your code.

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  • Decreasing the Number of Memory Accesses 1/2
  • Frugal Programming: Saving Memory Subsystem Bandwidth
  • For Software Performance, the Way Data is Accessed Matters!
  • What is faster: vec.emplace_back(x) or vec[x] ?
  • When an instruction depends on the previous instruction depends on the previous instructions… : long instruction dependency chains and performance

Recent Posts

  • Decreasing the Number of Memory Accesses 1/2
  • Frugal Programming: Saving Memory Subsystem Bandwidth
  • For Software Performance, the Way Data is Accessed Matters!
  • What is faster: vec.emplace_back(x) or vec[x] ?
  • When an instruction depends on the previous instruction depends on the previous instructions… : long instruction dependency chains and performance

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  • Ivica Bogosavljević on Make your programs run faster by better using the data cache
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  • Ivica Bogosavljević on Decreasing the Number of Memory Accesses 1/2

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