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MCTargetOptionsCommandFlags.inc and CommandFlags.inc are headers which contain cl::opt with static storage. These headers are meant to be incuded by tools to make it easier to parametrize codegen/mc. However, these headers are also included in at least two libraries: lldCommon and handle-llvm. As a result, when creating DYLIB, clang-cpp holds a reference to the options, and lldCommon holds another reference. Linking the two in a single executable, as zig does[0], results in a double registration. This patch explores an other approach: the .inc files are moved to regular files, and the registration happens on-demand through static declaration of options in the constructor of a static object. [0] https://bugzilla.redhat.com/show_bug.cgi?id=1756977#c5 Differential Revision: https://reviews.llvm.org/D75579
31 lines
1.0 KiB
C++
31 lines
1.0 KiB
C++
//===-- TargetOptionsCommandFlags.cpp ---------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lld/Common/TargetOptionsCommandFlags.h"
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#include "llvm/CodeGen/CommandFlags.h"
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#include "llvm/Target/TargetOptions.h"
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static llvm::codegen::RegisterCodeGenFlags CGF;
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llvm::TargetOptions lld::initTargetOptionsFromCodeGenFlags() {
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return llvm::codegen::InitTargetOptionsFromCodeGenFlags();
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}
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llvm::Optional<llvm::Reloc::Model> lld::getRelocModelFromCMModel() {
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return llvm::codegen::getExplicitRelocModel();
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}
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llvm::Optional<llvm::CodeModel::Model> lld::getCodeModelFromCMModel() {
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return llvm::codegen::getExplicitCodeModel();
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}
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std::string lld::getCPUStr() { return llvm::codegen::getCPUStr(); }
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std::vector<std::string> lld::getMAttrs() { return llvm::codegen::getMAttrs(); }
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