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[SpecialCaseList] Flip RadixTree key order #164544

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[SpecialCaseList] Flip RadixTree key order #164544

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[𝘀𝗽𝗿] initial version
vitalybuka Oct 22, 2025
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6 changes: 3 additions & 3 deletions llvm/include/llvm/Support/SpecialCaseList.h
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Original file line number Diff line number Diff line change
Expand Up @@ -166,10 +166,10 @@ class SpecialCaseList {

std::vector<GlobMatcher::Glob> Globs;

RadixTree<iterator_range<StringRef::const_iterator>,
RadixTree<iterator_range<StringRef::const_reverse_iterator>,
RadixTree<iterator_range<StringRef::const_reverse_iterator>,
RadixTree<iterator_range<StringRef::const_iterator>,
SmallVector<const GlobMatcher::Glob *, 1>>>
PrefixSuffixToGlob;
SuffixPrefixToGlob;

RadixTree<iterator_range<StringRef::const_iterator>,
SmallVector<const GlobMatcher::Glob *, 1>>
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11 changes: 6 additions & 5 deletions llvm/lib/Support/SpecialCaseList.cpp
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Expand Up @@ -107,18 +107,19 @@ void SpecialCaseList::GlobMatcher::preprocess(bool BySize) {
}
}

auto &SToGlob = PrefixSuffixToGlob.emplace(Prefix).first->second;
auto &V = SToGlob.emplace(reverse(Suffix)).first->second;
auto &PToGlob = SuffixPrefixToGlob.emplace(reverse(Suffix)).first->second;
auto &V = PToGlob.emplace(Prefix).first->second;
V.emplace_back(&G);
}
}

void SpecialCaseList::GlobMatcher::match(
StringRef Query,
llvm::function_ref<void(StringRef Rule, unsigned LineNo)> Cb) const {
if (!PrefixSuffixToGlob.empty()) {
for (const auto &[_, SToGlob] : PrefixSuffixToGlob.find_prefixes(Query)) {
for (const auto &[_, V] : SToGlob.find_prefixes(reverse(Query))) {
if (!SuffixPrefixToGlob.empty()) {
for (const auto &[_, PToGlob] :
SuffixPrefixToGlob.find_prefixes(reverse(Query))) {
for (const auto &[_, V] : PToGlob.find_prefixes(Query)) {
for (const auto *G : V) {
if (G->Pattern.match(Query)) {
Cb(G->Name, G->LineNo);
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