Scan Scatter Fusion #2217
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Scan Scatter Fusion #2217
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…nb debug scanscatter with debug dev without fusition being implemented.
…bda at the end which is applied to all of the scan input together with the initial input.
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This pull request aims to extend Futharks fusion algebra such that it is able to fuse a single pass scan followed by a scatter into a single kernel. The scan scatter kernel should allow for the ability to keep the scans output in shared memory and use the output for the scatter. The goal with this fusion rule is it will improve the performance of common operations such as filters, partition and segmented reduce.