| Andrew Scull | 5e1ddfa | 2018-08-14 10:06:54 +0100 | [diff] [blame] | 1 | //===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- 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 assembler writer related passes for tools like |
| 11 | // llc that need this functionality. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
| 16 | #define LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
| 17 | |
| 18 | #include "llvm/CodeGen/GCs.h" |
| 19 | #include <cstdlib> |
| 20 | |
| 21 | namespace { |
| 22 | struct ForceAsmWriterLinking { |
| 23 | ForceAsmWriterLinking() { |
| 24 | // We must reference the plug-ins in such a way that compilers will not |
| 25 | // delete it all as dead code, even with whole program optimization, |
| 26 | // yet is effectively a NO-OP. As the compiler isn't smart enough |
| 27 | // to know that getenv() never returns -1, this will do the job. |
| 28 | if (std::getenv("bar") != (char*) -1) |
| 29 | return; |
| 30 | |
| 31 | llvm::linkOcamlGCPrinter(); |
| 32 | llvm::linkErlangGCPrinter(); |
| 33 | |
| 34 | } |
| 35 | } ForceAsmWriterLinking; // Force link by creating a global definition. |
| 36 | } |
| 37 | |
| 38 | #endif // LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |