[WebAssembly] Avoid COMDAT hashmap lookup for each symbol. NFC

This reduces the number of lookups to one per COMDAT group, rather than
one per symbol in a COMDAT group.

Differential Revision: https://reviews.llvm.org/D44344

llvm-svn: 327523

1 files changed, 3 insertions, 3 deletions

diff --git a/lld/wasm/SymbolTable.h b/lld/wasm/SymbolTable.h
index 17c5a3bb699..6fb5c15782d 100644
--- a/lld/wasm/SymbolTable.h
+++ b/lld/wasm/SymbolTable.h
@@ -13,7 +13,7 @@
 #include "InputFiles.h"
 #include "Symbols.h"
 #include "llvm/ADT/CachedHashString.h"
-#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/DenseSet.h"
 #include "llvm/Support/raw_ostream.h"
 
 using llvm::wasm::WasmGlobalType;
@@ -65,7 +65,7 @@ public:
 
   void addLazy(ArchiveFile *F, const Archive::Symbol *Sym);
 
-  bool addComdat(StringRef Name, const ObjFile *File);
+  bool addComdat(StringRef Name);
 
   DefinedData *addSyntheticDataSymbol(StringRef Name, uint32_t Flags);
   DefinedGlobal *addSyntheticGlobal(StringRef Name, uint32_t Flags,
@@ -79,7 +79,7 @@ private:
   llvm::DenseMap<llvm::CachedHashStringRef, Symbol *> SymMap;
   std::vector<Symbol *> SymVector;
 
-  llvm::DenseMap<StringRef, const ObjFile *> Comdats;
+  llvm::DenseSet<llvm::CachedHashStringRef> Comdats;
 };
 
 extern SymbolTable *Symtab;