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comparison 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++ -*-===//
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 file forces the MCJIT to link in on certain operating systems.
11 // (Windows).
12 //
13 //===----------------------------------------------------------------------===//
14
15 #ifndef LLVM_EXECUTIONENGINE_MCJIT_H
16 #define LLVM_EXECUTIONENGINE_MCJIT_H
17
18 #include "llvm/ExecutionEngine/ExecutionEngine.h"
19 #include <cstdlib>
20
21 extern "C" void LLVMLinkInMCJIT();
22
23 namespace {
24 struct ForceMCJITLinking {
25 ForceMCJITLinking() {
26 // We must reference MCJIT in such a way that compilers will not
27 // delete it all as dead code, even with whole program optimization,
28 // yet is effectively a NO-OP. As the compiler isn't smart enough
29 // to know that getenv() never returns -1, this will do the job.
30 if (std::getenv("bar") != (char*) -1)
31 return;
32
33 LLVMLinkInMCJIT();
34 }
35 } ForceMCJITLinking;
36 }
37
38 #endif