Support constructor and destructor attributes in CodeGen
- There is an miscompilation issue remaining due to a poor
interaction between the delayed emission of static functions and
the emission of constructors, but that already existed prior to
this change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54258 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 3a39eb3..1fb2cf7 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -54,6 +54,8 @@
/// CodeGenModule - This class organizes the cross-module state that is used
/// while generating LLVM code.
class CodeGenModule {
+ typedef std::vector< std::pair<llvm::Constant*, int> > CtorList;
+
ASTContext &Context;
const LangOptions &Features;
llvm::Module &TheModule;
@@ -80,7 +82,16 @@
/// which actually define something.
std::vector<const ValueDecl*> StaticDecls;
- std::vector<llvm::Constant*> GlobalCtors;
+ /// GlobalCtors - Store the list of global constructors and their
+ /// respective priorities to be emitted when the translation unit is
+ /// complete.
+ CtorList GlobalCtors;
+
+ /// GlobalDtors - Store the list of global destructors and their
+ /// respective priorities to be emitted when the translation unit is
+ /// complete.
+ CtorList GlobalDtors;
+
std::vector<llvm::Constant*> Annotations;
llvm::StringMap<llvm::Constant*> CFConstantStringMap;
@@ -173,9 +184,17 @@
llvm::GlobalValue *EmitForwardFunctionDefinition(const FunctionDecl *D);
void EmitGlobalFunctionDefinition(const FunctionDecl *D);
void EmitGlobalVarDefinition(const VarDecl *D);
+
+ // FIXME: Hardcoding priority here is gross.
+ void AddGlobalCtor(llvm::Function * Ctor, int Priority=65535);
+ void AddGlobalDtor(llvm::Function * Dtor, int Priority=65535);
- void AddGlobalCtor(llvm::Function * Ctor);
- void EmitGlobalCtors(void);
+ /// EmitCtorList - Generates a global array of functions and
+ /// priorities using the given list and name. This array will have
+ /// appending linkage and is suitable for use as a LLVM constructor
+ /// or destructor array.
+ void EmitCtorList(const CtorList &Fns, const char *GlobalName);
+
void EmitAnnotations(void);
void EmitStatics(void);