1//===- LinkAllVMCore.h - Reference All VMCore Code --------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This header file pulls in all the object modules of the VMCore library so 11// that tools like llc, opt, and lli can ensure they are linked with all symbols 12// from libVMCore.a It should only be used from a tool's main program. 13// 14//===----------------------------------------------------------------------===// 15 16#ifndef LLVM_LINKALLVMCORE_H 17#define LLVM_LINKALLVMCORE_H 18 19#include "llvm/LLVMContext.h" 20#include "llvm/Module.h" 21#include "llvm/Instructions.h" 22#include "llvm/IntrinsicInst.h" 23#include "llvm/InlineAsm.h" 24#include "llvm/Analysis/Verifier.h" 25#include "llvm/Support/DynamicLibrary.h" 26#include "llvm/Support/Memory.h" 27#include "llvm/Support/Mutex.h" 28#include "llvm/Support/Path.h" 29#include "llvm/Support/Process.h" 30#include "llvm/Support/Program.h" 31#include "llvm/Support/Signals.h" 32#include "llvm/Support/TimeValue.h" 33#include "llvm/Support/Dwarf.h" 34#include "llvm/Support/MathExtras.h" 35#include <cstdlib> 36 37namespace { 38 struct ForceVMCoreLinking { 39 ForceVMCoreLinking() { 40 // We must reference VMCore in such a way that compilers will not 41 // delete it all as dead code, even with whole program optimization, 42 // yet is effectively a NO-OP. As the compiler isn't smart enough 43 // to know that getenv() never returns -1, this will do the job. 44 if (std::getenv("bar") != (char*) -1) 45 return; 46 (void)new llvm::Module("", llvm::getGlobalContext()); 47 (void)new llvm::UnreachableInst(llvm::getGlobalContext()); 48 (void) llvm::createVerifierPass(); 49 } 50 } ForceVMCoreLinking; 51} 52 53#endif 54