Tentative fix for semantic3 on imported modules and unnecessary template function definition issue. Please test! Also change linkage of __interfaceInfos to external (same as __Class, __vtbl, __init). The other change might make this superfluous.

#ifndef LDC_GEN_OPTIMIZER_H
#define LDC_GEN_OPTIMIZER_H

namespace llvm { class Module; }

bool ldc_optimize_module(llvm::Module* m);

bool doInline();

int optLevel();

bool optimize();

#endif