Validating more loop optimizations

In this paper, for more aggressive optimizations that alter the loop structure of the code-such as distribution, fusion, tiling, and interchange-we present a set of permutation ruleswhich establish that the transformed code satisfies all the implied data dependencies necessary for the validity of the considered transformation.

bathroom-blowjob

Rather than verify the compiler, the approach of translation validation performs a validation check after every run of the compiler, producing a formal proof that the produced target code is a correct implementation of the source code.

Each optimization has a cost in complexity and must have a compensating benefit in performance.

The benefit needs to be established with reproducible benchmarks so that we know it is real and we know how it evolves over time (e.g.

We describe the extensions to our tool voc-64 which are required to validate these structure-modifying optimizations.

bathroom-blowjob

In this paper, for more aggressive optimizations that alter the loop structure of the code-such as distribution, fusion, tiling, and interchange-we present a set of permutation rules which establish that the transformed code satisfies all the implied data dependencies necessary for the validity of the considered transformation.

So the question on my mind is whether some of the instruction fusion optimizations could be mutually redundant between our tracing JIT and the one built into the CPU.

hottesladen.de

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