[ELF] GnuHashTableSection: replace stable_sort with 2-key sort. NFC

strTabOffset stabilizes llvm::sort. My x86-64 executable is 5+KiB smaller.
llvm · Jan 17, 2022 · f855074 · f855074
1 parent 4796b4a
commit f855074
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
@@ -2478,8 +2478,9 @@ void GnuHashTableSection::addSymbols(SmallVectorImpl<SymbolTableEntry> &v) {
     symbols.push_back({b, ent.strTabOffset, hash, bucketIdx});
   }
 
-  llvm::stable_sort(symbols, [](const Entry &l, const Entry &r) {
-    return l.bucketIdx < r.bucketIdx;
+  llvm::sort(symbols, [](const Entry &l, const Entry &r) {
+    return std::tie(l.bucketIdx, l.strTabOffset) <
+           std::tie(r.bucketIdx, r.strTabOffset);
   });
 
   v.erase(mid, v.end());