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2038d2c49e
Optimizations: - Make sure `DT_SYMTAB` is a string view literal, instead of string. - DynamicObject::HashSection::lookup_sysv_symbol should be using raw_name() from symbol comparison to avoid needlessly calling `strlen`, when the StrinView::operator= walks the cstring without calling `strlen` first. - DynamicObject::HashSection::lookup_gnu_symbol shouldn't create a symbol unless we know the hashes match first. In order to test these changes I enabled Undefined behavior sanitizer which creates a huge amount of relocations, and then ran the browser with the help argument 100 times. The browser is a fairly big app with a few different libraries being loaded, so it seemed liked a good target. Command: `time -n 100 br --help` Before: ``` Timing report: ============== Command: br --help Average time: 3897.679931 ms Excluding first: 3901.242431 ms ``` After: ``` Timing report: ============== Command: br --help Average time: 3612.860107 ms Excluding first: 3613.54541 ms ``` |
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