blob: c22f9d49f374b7f686a199575cec9a6299122689 [file] [log] [blame]
//===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See 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.
#include "llvm/IR/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.
// This is so that globals in the translation units where these functions
// are defined are forced to be initialized, populating various
// registries.
if (std::getenv("bar") != (char*) -1)
} ForceAsmWriterLinking; // Force link by creating a global definition.