Superword Level Parallelism

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Superword level parallelism (SLP) is a vectorization technique based on loop unrolling and basic block vectorization. It is distinct from loop vectorization algorithms in that it can exploit parallelism of inline code, such as manipulating coordinates, color channels or in loops unrolled by hand.[1] It is available in the gcc compiler since version 4.3.

Also supported by LLVM.


  1. ^ Samuel Larsen; Saman Amarasinghe. "Exploiting Superword Level Parallelism with Multimedia Instruction Sets" (PDF).

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