1 //===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Jeff Cohen and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file forces the interpreter to link in on certain operating systems.
13 //===----------------------------------------------------------------------===//
15 #ifndef EXECUTION_ENGINE_INTERPRETER_H
16 #define EXECUTION_ENGINE_INTERPRETER_H
18 #include "llvm/ExecutionEngine/ExecutionEngine.h"
21 extern void LinkInInterpreter();
25 struct ForceInterpreterLinking {
26 ForceInterpreterLinking() {
27 // We must reference the passes in such a way that compilers will not
28 // delete it all as dead code, even with whole program optimization,
29 // yet is effectively a NO-OP. As the compiler isn't smart enough
30 // to know that getenv() never returns -1, this will do the job.
31 if (std::getenv("bar") != (char*) -1)
34 llvm::LinkInInterpreter();
36 } ForceInterpreterLinking;