5a7f47cc02
Reorganize clang::Builtin::Info to have them naturally align on 4 bytes boundaries. Instead of storing builtin headers as a straight char pointer, enumerate them and store the enum. It allows to use a small enum instead of a pointer to reference them. On a 64 bit machine, this brings sizeof(clang::Builtin::Info) from 56 down to 48 bytes. On a release build on my Linux 64 bit machine, it shrinks the size of libclang-cpp.so by 193kB. The impact on performance is negligible in terms of instruction count, but the wall time seems better, see https://llvm-compile-time-tracker.com/compare.php?from=b3d8639f3536a4876b511aca9fb7948ff9266cee&to=a89b56423f98b550260a58c41e64aff9e56b76be&stat=task-clock Differential Revision: https://reviews.llvm.org/D142024
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
//===--- XCore.cpp - Implement XCore target feature support ---------------===//
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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 implements XCore TargetInfo objects.
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//
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//===----------------------------------------------------------------------===//
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#include "XCore.h"
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#include "clang/Basic/Builtins.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/TargetBuiltins.h"
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using namespace clang;
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using namespace clang::targets;
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static constexpr Builtin::Info BuiltinInfo[] = {
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#define BUILTIN(ID, TYPE, ATTRS) \
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{#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
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#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) \
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{#ID, TYPE, ATTRS, nullptr, HeaderDesc::HEADER, ALL_LANGUAGES},
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#include "clang/Basic/BuiltinsXCore.def"
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};
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void XCoreTargetInfo::getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const {
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Builder.defineMacro("__xcore__");
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Builder.defineMacro("__XS1B__");
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}
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ArrayRef<Builtin::Info> XCoreTargetInfo::getTargetBuiltins() const {
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return llvm::ArrayRef(BuiltinInfo,
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clang::XCore::LastTSBuiltin - Builtin::FirstTSBuiltin);
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}
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