delete unused decrypt fucntion

Ylarod · May 4, 2021 · c76f673 · c76f673
1 parent ea68136
commit c76f673
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/llvm/lib/Transforms/Obfuscation/StringEncryption.cpp b/llvm/lib/Transforms/Obfuscation/StringEncryption.cpp
@@ -191,6 +191,11 @@ bool StringEncryption::runOnModule(Module &M) {
 
   // delete unused global variables
   deleteUnusedGlobalVariable();
+  for (CSPEntry *Entry: ConstantStringPool) {
+    if (Entry->DecFunc->use_empty()) {
+      Entry->DecFunc->eraseFromParent();
+    }
+  }
   return Changed;
 }