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Postings from October 2017
I think it would be a good idea to use compiler intrinsics for overflow checks where available. I've pushed a branch that implements this at mauke/overflow: https://perl5.git.perl.org/perl.git/shortlog/refs/heads/mauke/overflow Dave: I've CC'd you directly because you last worked on this code (commit 230ee21f3e366901ce5769d324124c522df7ce8a, "faster add, subtract, multiply"). My changes affect pp_add, pp_subtract, and pp_multiply. I think the new code is nicer because it's easier to understand than all the low-level bit fiddling, and it passes all tests on my machine. However, I haven't done any benchmarks to see how it affects performance (if at all). Things I need help with: - code review - testing on different platforms / architectures - benchmarks (compared to a17768d7c7b82c136fbeacd85db3451973a8007a) -- Lukas Mai <plokinom@gmail.com>Thread Next