Скачать или смотреть Automatic Tuning of Compiler Options using irace - GNU Tools Cauldron 2018

Presented by Manuel López-Ibáñez at GNU Tools Cauldron 2018

While modern compilers usually offer different levels of optimization as possible defaults, they have a larger number of command-line options and numerical parameters that impact properties of the generated machine-code. The irace package (https://cran.r-project.org/package=irace) is a method for automatic algorithm configuration that can handle numerical and discrete options and optimizes their settings according to a given metric (such as runtime) over a large number of noisy (stochastic) benchmarks. When adapted to the tuning of compiler options in GCC, irace becomes an alternative to Acovea, OpenTuner and TACT with some desirable features. Experimental results show that, depending on the specific code to be optimized, speed-ups of up to 1.4 when compared to the -O2 and -O3 optimization flags are possible.

I'm presenting on behalf of the other authors who will not attend. They did all the experiments using our tool (irace) and advice from me. I hope the irace package will be interesting to GCC developers and users (it is GPL).