6841110bd6
`edata_cmp_summary_comp` is one of the very hottest functions, taking up 3% of all time spent inside Jemalloc. I noticed that all existing callsites rely only on the sign of the value returned by this function, so I came up with this equivalent branchless implementation which preserves this property. After empirical measurement, I have found that this implementation is 30% faster, therefore representing a 1% speed-up to the allocator as a whole. At @interwq's suggestion, I've applied the same optimization to `edata_esnead_comp` in case this function becomes hotter in the future. |
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| .. | ||
| internal | ||
| jemalloc_defs.h.in | ||
| jemalloc_macros.h.in | ||
| jemalloc_mangle.sh | ||
| jemalloc_protos.h.in | ||
| jemalloc_rename.sh | ||
| jemalloc_typedefs.h.in | ||
| jemalloc.sh | ||