[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.

1 files changed, 1 insertions, 1 deletions

diff --git a/lld/ELF/ScriptParser.cpp b/lld/ELF/ScriptParser.cpp
index d23a46d2..fea6b7a 100644
--- a/lld/ELF/ScriptParser.cpp
+++ b/lld/ELF/ScriptParser.cpp
@@ -1474,7 +1474,7 @@ void ScriptParser::readVersionDeclaration(StringRef verStr) {
     expect(";");
 }
 
-static bool hasWildcard(StringRef s) {
+bool elf::hasWildcard(StringRef s) {
   return s.find_first_of("?*[") != StringRef::npos;
 }