However, compilers cannot produce optimized code without assistance from the programmer. To maximize the performance, the programmer must tune the compiler using various compilation options.

These are exciting times for computing, where context aware reasoning and domain specific compiler optimizations could represent an entirely new level of computing.

In this excerpt from his book "Write Great Code," Randall Hyde introduces the common optimizations that compilers perform, and when a programmer should consider using or disabling them.

To test the ATMEL GCC Compiler Optimization with respect to loop and IO timing I wrote a simple little SPI type data output routine that simulates bit/bang IO with high level ASF (Application Specific ...

This technique should generally be used at the end of the optimization process. Increasing Demands Compiler optimization technologies are continually advancing. As the demand placed on embedded ...

That improvement comes purely from optimization strategies that were already part of the compiler the researchers modified, which was designed to compile conventional, serial programs.

Redis and Intel teamed up to find out whether applying more aggressive optimization options would improve overall Redis baseline performance. Our conclusion: By changing the compiler behavior, we ...

Microsoft Build for OpenJDK adds an experimental compiler optimization that promotes scalar replacement of objects involved in object allocation merges, easing garbage collection and improving ...

The compiler’s profile-guided optimization features use runtime profiling data to identify hot spots and bottlenecks and suggest source code changes that can improve further optimizations.

Furthermore, they claim that the LLM Compiler has demonstrated enormous efficiency in code size optimization, achieving 77% of the optimizing potential of an autotuning search in their experiments.