Discard unused runtime function declarations (for readability).

llvm-svn: 59594
2008-11-19 06:15:35 +00:00
parent 8d5bec4c7d
commit 1b9ad472a4
1 changed files with 6 additions and 0 deletions
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -72,6 +72,12 @@ void CodeGenModule::BindRuntimeFunctions() {
    llvm::Function *Fn = RuntimeFunctions[i].first;
    const std::string &Name = RuntimeFunctions[i].second;
    
+    // Discard unused runtime functions.
+    if (Fn->use_empty()) {
+      Fn->eraseFromParent();
+      continue;
+    }
+      
    // See if there is a conflict against a function.
    llvm::Function *Conflict = TheModule.getFunction(Name);
    if (Conflict) {