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Use the full hash as a filter to reduce # strcmps 

llvm-svn: 39057
This commit is contained in:
Chris Lattner 2006-10-26 05:18:38 +00:00
parent 893f272c39
commit 341fd06d3c
1 changed files with 1 additions and 0 deletions
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clang/Lex/IdentifierTable.cpp
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@ -187,6 +187,7 @@ IdentifierInfo &IdentifierTable::get(const char *NameStart,
for (IdentifierBucket *Identifier = IdentHead, *LastID = 0; Identifier; for (IdentifierBucket *Identifier = IdentHead, *LastID = 0; Identifier;
LastID = Identifier, Identifier = Identifier->Next) { LastID = Identifier, Identifier = Identifier->Next) {
if (Identifier->TokInfo.getNameLength() == Length && if (Identifier->TokInfo.getNameLength() == Length &&
Identifier->TokInfo.HashValue == FullHash &&
memcmp(Identifier->TokInfo.getName(), NameStart, Length) == 0) { memcmp(Identifier->TokInfo.getName(), NameStart, Length) == 0) {
// If found identifier wasn't at start of bucket, move it there so // If found identifier wasn't at start of bucket, move it there so
// that frequently searched for identifiers are found earlier, even if // that frequently searched for identifiers are found earlier, even if