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_ALIGNEDALLOCATION_H |
16 | #define LLVM_CLANG_BASIC_ALIGNEDALLOCATION_H |
17 | |
18 | #include "llvm/Support/ErrorHandling.h" |
19 | #include "llvm/Support/VersionTuple.h" |
20 | #include "llvm/TargetParser/Triple.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 10.13. |
30 | return llvm::VersionTuple(10U, 13U); |
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 | case llvm::Triple::ZOS: |
37 | return llvm::VersionTuple(); // All z/OS versions have no support. |
38 | } |
39 | |
40 | llvm_unreachable("Unexpected OS" ); |
41 | } |
42 | |
43 | } // end namespace clang |
44 | |
45 | #endif // LLVM_CLANG_BASIC_ALIGNEDALLOCATION_H |
46 | |