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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This header file pulls in all assembler writer related passes for tools like |
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| 10 | // llc that need this functionality. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
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| 15 | #define LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
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| 16 | |||
| 17 | #include "llvm/IR/BuiltinGCs.h" |
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| 18 | #include <cstdlib> |
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| 19 | |||
| 20 | namespace { |
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| 21 | struct ForceAsmWriterLinking { |
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| 22 | ForceAsmWriterLinking() { |
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| 23 | // We must reference the plug-ins in such a way that compilers will not |
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| 24 | // delete it all as dead code, even with whole program optimization, |
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| 25 | // yet is effectively a NO-OP. As the compiler isn't smart enough |
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| 26 | // to know that getenv() never returns -1, this will do the job. |
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| 27 | // This is so that globals in the translation units where these functions |
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| 28 | // are defined are forced to be initialized, populating various |
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| 29 | // registries. |
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| 30 | if (std::getenv("bar") != (char*) -1) |
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| 31 | return; |
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| 32 | |||
| 33 | llvm::linkOcamlGCPrinter(); |
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| 34 | llvm::linkErlangGCPrinter(); |
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| 35 | |||
| 36 | } |
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| 37 | } ForceAsmWriterLinking; // Force link by creating a global definition. |
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| 38 | } |
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| 39 | |||
| 40 | #endif // LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |