1//===--- AlignedAllocation.h - Aligned Allocation ---------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9/// 10/// \file 11/// \brief Defines a function that returns the minimum OS versions supporting 12/// C++17's aligned allocation functions. 13/// 14//===----------------------------------------------------------------------===// 15 16#ifndef LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H 17#define LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H 18 19#include "clang/Basic/VersionTuple.h" 20#include "llvm/ADT/Triple.h" 21#include "llvm/Support/ErrorHandling.h" 22 23namespace clang { 24 25inline VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS) { 26 switch (OS) { 27 default: 28 break; 29 case llvm::Triple::Darwin: 30 case llvm::Triple::MacOSX: // Earliest supporting version is 10.13. 31 return VersionTuple(10U, 13U); 32 case llvm::Triple::IOS: 33 case llvm::Triple::TvOS: // Earliest supporting version is 11.0.0. 34 return VersionTuple(11U); 35 case llvm::Triple::WatchOS: // Earliest supporting version is 4.0.0. 36 return VersionTuple(4U); 37 } 38 39 llvm_unreachable("Unexpected OS"); 40} 41 42} // end namespace clang 43 44#endif // LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H 45