Fangrui Song 49279ca160 [ELF] Improve --export-dynamic-symbol performance by checking whether wildcard is really used ...

A hasWildcard pattern iterates over symVector, which can be slow when there
are many --export-dynamic-symbol. In optimistic cases, most patterns don't use
a wildcard character. hasWildcard: false can avoid a symbol table iteration.

While here, add two tests using `[` and `?`, respectively.

2020-06-17 17:12:10 -07:00

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