Added support for static variables which require

initialization before main. Fixes pr5396.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86145 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 5 deletions

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index db609f6245..5b372faef7 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -543,10 +543,15 @@ bool CodeGenModule::MayDeferGeneration(const ValueDecl *Global) {
       
   // Static data may be deferred, but out-of-line static data members
   // cannot be.
-  // FIXME: What if the initializer has side effects?
-  return VD->isInAnonymousNamespace() ||
-         (VD->getStorageClass() == VarDecl::Static &&
-          !(VD->isStaticDataMember() && VD->isOutOfLine()));
+  if (VD->isInAnonymousNamespace())
+    return true;
+  if (VD->getStorageClass() == VarDecl::Static) {
+    // Initializer has side effects?
+    if (VD->getInit() && VD->getInit()->HasSideEffects(Context))
+      return false;
+    return !(VD->isStaticDataMember() && VD->isOutOfLine());
+  }
+  return false;
 }
 
 void CodeGenModule::EmitGlobal(GlobalDecl GD) {
diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 2e58337ee5..b09f52cf2b 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -499,7 +499,7 @@ private:
 
   /// EmitCXXGlobalInitFunc - Emit a function that initializes C++ globals.
   void EmitCXXGlobalInitFunc();
-
+  
   // FIXME: Hardcoding priority here is gross.
   void AddGlobalCtor(llvm::Function *Ctor, int Priority=65535);
   void AddGlobalDtor(llvm::Function *Dtor, int Priority=65535);