faster duplicate_overlapping #69
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improve duplicate_overlapping unsafe version. The compiler generates unfavourable assembly for the simple version. Now we copy 4 bytes, instead of one in every iteration. Without that the compiler will unroll/auto-vectorize the copy with a lot of branches. This is not what we want, as large overlapping copies are not that common.
PSeitz
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Apr 30, 2023
fixes checked decode checks revert #69 as this leads to out of bounds writes
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PSeitz
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Apr 30, 2023
fixes checked decode checks revert #69 as this leads to out of bounds writes
PSeitz
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May 27, 2023
This is another attempt to replace the aggressive compiler after the failed attempt #69 (wrote out of bounds in some cases) The unrolling is avoided by manually unrolling less aggressive. Decompression performance is slightly improved by ca 4%, except the smallest test case.
PSeitz
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May 27, 2023
This is another attempt to replace the aggressive compiler after the failed attempt #69 (wrote out of bounds in some cases) The unrolling is avoided by manually unrolling less aggressive. Decompression performance is slightly improved by ca 4%, except the smallest test case.
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improve duplicate_overlapping unsafe version. The compiler generates unfavourable assembly for the simple version.
Now we copy 4 bytes, instead of one in every iteration.
Without that the compiler will unroll/auto-vectorize the copy with a lot of branches.
This is not what we want, as large overlapping copies are not that common.