clang  10.0.0svn
AlignedAllocation.h
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1 //===--- AlignedAllocation.h - Aligned Allocation ---------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// Defines a function that returns the minimum OS versions supporting
11 /// C++17's aligned allocation functions.
12 ///
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
16 #define LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
17 
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/Support/ErrorHandling.h"
20 #include "llvm/Support/VersionTuple.h"
21 
22 namespace clang {
23 
24 inline llvm::VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS) {
25  switch (OS) {
26  default:
27  break;
28  case llvm::Triple::Darwin:
29  case llvm::Triple::MacOSX: // Earliest supporting version is 10.14.
30  return llvm::VersionTuple(10U, 14U);
31  case llvm::Triple::IOS:
32  case llvm::Triple::TvOS: // Earliest supporting version is 11.0.0.
33  return llvm::VersionTuple(11U);
34  case llvm::Triple::WatchOS: // Earliest supporting version is 4.0.0.
35  return llvm::VersionTuple(4U);
36  }
37 
38  llvm_unreachable("Unexpected OS");
39 }
40 
41 } // end namespace clang
42 
43 #endif // LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
Dataflow Directional Tag Classes.
llvm::VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS)