Implement LLVMGetOrInsertGlobal wrapper

Author: nagisa

src/librustc_llvm/lib.rs

@@ -912,6 +912,7 @@ extern {
                                        AddressSpace: c_uint)
                                        -> ValueRef;
     pub fn LLVMGetNamedGlobal(M: ModuleRef, Name: *const c_char) -> ValueRef;
+    pub fn LLVMGetOrInsertGlobal(M: ModuleRef, Name: *const c_char, T: TypeRef) -> ValueRef;
     pub fn LLVMGetFirstGlobal(M: ModuleRef) -> ValueRef;
     pub fn LLVMGetLastGlobal(M: ModuleRef) -> ValueRef;
     pub fn LLVMGetNextGlobal(GlobalVar: ValueRef) -> ValueRef;

src/rustllvm/RustWrapper.cpp

@@ -89,6 +89,12 @@ extern "C" LLVMValueRef LLVMGetOrInsertFunction(LLVMModuleRef M,
                                              unwrap<FunctionType>(FunctionTy)));
 }
 
+extern "C" LLVMValueRef LLVMGetOrInsertGlobal(LLVMModuleRef M,
+                                              const char* Name,
+                                              LLVMTypeRef Ty) {
+  return wrap(unwrap(M)->getOrInsertGlobal(Name, unwrap(Ty)));
+}
+
 extern "C" LLVMTypeRef LLVMMetadataTypeInContext(LLVMContextRef C) {
   return wrap(Type::getMetadataTy(*unwrap(C)));
 }