Add SymbolTable::isCoalescedAway

isCoalescedAway(x) is faster than replacement(x) != x as the former
does not follow the replacement atom chain. Also it's easier to use.

llvm-svn: 210242

1 files changed, 4 insertions, 0 deletions

diff --git a/lld/lib/Core/SymbolTable.cpp b/lld/lib/Core/SymbolTable.cpp
index ae33fe089c1..b1a1eadbc44 100644
--- a/lld/lib/Core/SymbolTable.cpp
+++ b/lld/lib/Core/SymbolTable.cpp
@@ -381,6 +381,10 @@ const Atom *SymbolTable::replacement(const Atom *atom) {
   }
 }
 
+bool SymbolTable::isCoalescedAway(const Atom *atom) {
+  return _replacedAtoms.count(atom) > 0;
+}
+
 unsigned int SymbolTable::size() {
   return _nameTable.size();
 }