using namespace llvm;
-static bool compareBySuffix(StringRef a, StringRef b) {
- size_t sizeA = a.size();
- size_t sizeB = b.size();
- size_t len = std::min(sizeA, sizeB);
- for (size_t i = 0; i < len; ++i) {
- char ca = a[sizeA - i - 1];
- char cb = b[sizeB - i - 1];
- if (ca != cb)
- return ca > cb;
- }
- return sizeA > sizeB;
-}
-
void StringTableBuilder::finalize() {
SmallVector<StringRef, 8> Strings;
for (auto i = StringIndexMap.begin(), e = StringIndexMap.end(); i != e; ++i)
Strings.push_back(i->getKey());
- std::sort(Strings.begin(), Strings.end(), compareBySuffix);
+ // Sort the vector so a string is sorted above its suffixes.
+ std::sort(Strings.begin(), Strings.end(), [](StringRef A, StringRef B) {
+ typedef std::reverse_iterator<StringRef::iterator> Reverse;
+ return !std::lexicographical_compare(Reverse(A.end()), Reverse(A.begin()),
+ Reverse(B.end()), Reverse(B.begin()));
+ });
// FIXME: Starting with a null byte is ELF specific. Generalize this so we
// can use the class with other object formats.