clang  6.0.0svn
AlignedAllocation.h
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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 
20 #include "llvm/ADT/Triple.h"
21 #include "llvm/Support/ErrorHandling.h"
22 
23 namespace clang {
24 
25 inline 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
Represents a version number in the form major[.minor[.subminor[.build]]].
Definition: VersionTuple.h:26
VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS)
Dataflow Directional Tag Classes.
Defines the clang::VersionTuple class, which represents a version in the form major[.minor[.subminor]].