| //===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This header file pulls in all assembler writer related passes for tools like |
| // llc that need this functionality. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
| #define LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |
| |
| #include "llvm/CodeGen/BuiltinGCs.h" |
| #include <cstdlib> |
| |
| namespace { |
| struct ForceAsmWriterLinking { |
| ForceAsmWriterLinking() { |
| // We must reference the plug-ins in such a way that compilers will not |
| // delete it all as dead code, even with whole program optimization, |
| // yet is effectively a NO-OP. As the compiler isn't smart enough |
| // to know that getenv() never returns -1, this will do the job. |
| if (std::getenv("bar") != (char*) -1) |
| return; |
| |
| llvm::linkOcamlGCPrinter(); |
| llvm::linkErlangGCPrinter(); |
| |
| } |
| } ForceAsmWriterLinking; // Force link by creating a global definition. |
| } |
| |
| #endif // LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H |