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a4599cfc5d
Clang does this in the driver. Why not Swift? Because (a) this is an implementation detail that really only affects IRGen, and even then somewhat incorrectly, and (b) Swift has a good handful of clients that don't go through the driver to create an ASTContext (specifically, LLDB, along with many of our testing tools). rdar://problem/19779274 Swift SVN r25909
94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
//===--- LangOptions.cpp - Language & configuration options ---------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the LangOptions class, which provides various
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// language and configuration flags.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Basic/LangOptions.h"
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#include "swift/Basic/Range.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace swift;
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StringRef LangOptions::getTargetConfigOption(StringRef Name) const {
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// Last one wins.
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for (auto &Opt : reversed(TargetConfigOptions)) {
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if (Opt.first == Name)
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return Opt.second;
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}
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return StringRef();
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}
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bool LangOptions::hasBuildConfigOption(StringRef Name) const {
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return std::find(BuildConfigOptions.begin(), BuildConfigOptions.end(), Name)
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!= BuildConfigOptions.end();
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}
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void LangOptions::setTarget(llvm::Triple triple) {
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clearAllTargetConfigOptions();
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if (triple.getOS() == llvm::Triple::Darwin &&
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triple.getVendor() == llvm::Triple::Apple) {
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// Rewrite darwinX.Y triples to macosx10.X'.Y ones.
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// It affects code generation on our platform.
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llvm::SmallString<16> osxBuf;
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llvm::raw_svector_ostream osx(osxBuf);
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osx << llvm::Triple::getOSTypeName(llvm::Triple::MacOSX);
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unsigned major, minor, micro;
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triple.getMacOSXVersion(major, minor, micro);
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osx << major << "." << minor;
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if (micro != 0)
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osx << "." << micro;
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triple.setOSName(osx.str());
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}
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Target = std::move(triple);
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// Set the "os" target configuration.
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if (Target.isMacOSX())
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addTargetConfigOption("os", "OSX");
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else if (Target.isiOS())
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addTargetConfigOption("os", "iOS");
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else if (Target.isOSLinux())
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addTargetConfigOption("os", "Linux");
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else
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llvm_unreachable("Unsupported target OS");
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// Set the "arch" target configuration.
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switch (Target.getArch()) {
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case llvm::Triple::ArchType::arm:
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addTargetConfigOption("arch", "arm");
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break;
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case llvm::Triple::ArchType::aarch64:
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addTargetConfigOption("arch", "arm64");
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break;
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case llvm::Triple::ArchType::x86:
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addTargetConfigOption("arch", "i386");
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break;
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case llvm::Triple::ArchType::x86_64:
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addTargetConfigOption("arch", "x86_64");
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break;
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default:
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llvm_unreachable("Unsupported target architecture");
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}
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// Set the "runtime" target configuration.
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if (EnableObjCInterop)
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addTargetConfigOption("_runtime", "_ObjC");
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else
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addTargetConfigOption("_runtime", "_Native");
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}
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