LLVM 20.0.0git
LinkAllAsmWriterComponents.h
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1//===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This header file pulls in all assembler writer related passes for tools like
10// llc that need this functionality.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
15#define LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
16
17#include "llvm/IR/BuiltinGCs.h"
18#include <cstdlib>
19
20namespace {
21 struct ForceAsmWriterLinking {
22 ForceAsmWriterLinking() {
23 // We must reference the plug-ins in such a way that compilers will not
24 // delete it all as dead code, even with whole program optimization,
25 // yet is effectively a NO-OP. As the compiler isn't smart enough
26 // to know that getenv() never returns -1, this will do the job.
27 // This is so that globals in the translation units where these functions
28 // are defined are forced to be initialized, populating various
29 // registries.
30 if (std::getenv("bar") != (char*) -1)
31 return;
32
35
36 }
37 } ForceAsmWriterLinking; // Force link by creating a global definition.
38}
39
40#endif // LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
void linkErlangGCPrinter()
Creates an erlang-compatible metadata printer.
void linkOcamlGCPrinter()
Creates an ocaml-compatible metadata printer.