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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
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//===---- OrcMCJITReplacement.h - Orc-based MCJIT replacement ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file forces OrcMCJITReplacement to link in on certain operating systems.
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// (Windows).
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORCMCJITREPLACEMENT_H
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#define LLVM_EXECUTIONENGINE_ORCMCJITREPLACEMENT_H
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include <cstdlib>
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extern "C" void LLVMLinkInOrcMCJITReplacement();
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namespace {
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struct ForceOrcMCJITReplacementLinking {
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ForceOrcMCJITReplacementLinking() {
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// We must reference OrcMCJITReplacement in such a way that compilers will
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// not delete it all as dead code, even with whole program optimization,
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// yet is effectively a NO-OP. As the compiler isn't smart enough to know
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// that getenv() never returns -1, this will do the job.
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if (std::getenv("bar") != (char*) -1)
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return;
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LLVMLinkInOrcMCJITReplacement();
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}
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} ForceOrcMCJITReplacementLinking;
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}
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#endif
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