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This PR is motivated by the requirements of ClangIR, which includes compilation pipelines that do not always start from the Clang driver. In these cases, accessing some target-specific information, such as obtaining a data layout string for a given target triple or querying other target details, requires foundational infrastructure like `clang::TargetInfo`. Since ClangIR is actively being upstreamed, sharing this logic across components has become essential, which leads to this PR. The function `clang::targets::AllocateTarget` serves as the factory for Clang's `TargetInfo`. To enable sharing, this PR moves `AllocateTarget` to a public header. The existing header `clang/lib/Basic/Targets.h` previously contained two parts: the `AllocateTarget` function and target-specific macro helpers. With `AllocateTarget` moved, only the macro stuff remain in `Targets.h`. To better organize the code, the macro helpers have been relocated to a new file, `clang/lib/Basic/TargetDefines.h` (essentially a rename). The original `Targets.h` now serves as a proxy header that includes both headers to maintain compatibility.
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
//===------- TargetDefines.h - Target define helpers ------------*- 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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//
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// This file declares a series of helper functions for defining target-specific
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// macros.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_BASIC_TARGETDEFINES_H
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#define LLVM_CLANG_LIB_BASIC_TARGETDEFINES_H
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "llvm/ADT/StringRef.h"
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namespace clang {
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namespace targets {
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/// Define a macro name and standard variants. For example if MacroName is
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/// "unix", then this will define "__unix", "__unix__", and "unix" when in GNU
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/// mode.
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LLVM_LIBRARY_VISIBILITY
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void DefineStd(clang::MacroBuilder &Builder, llvm::StringRef MacroName,
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const clang::LangOptions &Opts);
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LLVM_LIBRARY_VISIBILITY
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void defineCPUMacros(clang::MacroBuilder &Builder, llvm::StringRef CPUName,
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bool Tuning = true);
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LLVM_LIBRARY_VISIBILITY
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void addCygMingDefines(const clang::LangOptions &Opts,
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clang::MacroBuilder &Builder);
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} // namespace targets
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} // namespace clang
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#endif // LLVM_CLANG_LIB_BASIC_TARGETDEFINES_H
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