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annotate include/llvm/ExecutionEngine/MCJIT.h @ 0:95c75e76d11b

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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1 //===-- MCJIT.h - MC-Based Just-In-Time Execution Engine --------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file forces the MCJIT to link in on certain operating systems.
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11 // (Windows).
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12 //
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13 //===----------------------------------------------------------------------===//
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15 #ifndef LLVM_EXECUTIONENGINE_MCJIT_H
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16 #define LLVM_EXECUTIONENGINE_MCJIT_H
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17
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18 #include "llvm/ExecutionEngine/ExecutionEngine.h"
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19 #include <cstdlib>
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20
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21 extern "C" void LLVMLinkInMCJIT();
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22
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23 namespace {
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24 struct ForceMCJITLinking {
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25 ForceMCJITLinking() {
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26 // We must reference MCJIT in such a way that compilers will not
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27 // delete it all as dead code, even with whole program optimization,
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28 // yet is effectively a NO-OP. As the compiler isn't smart enough
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29 // to know that getenv() never returns -1, this will do the job.
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30 if (std::getenv("bar") != (char*) -1)
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31 return;
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32
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33 LLVMLinkInMCJIT();
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34 }
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35 } ForceMCJITLinking;
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36 }
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37
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38 #endif