1 //===- LangOptions.cpp - C Language Family Language Options ---------------===//
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 //  This file defines the LangOptions class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/Basic/LangOptions.h"
14 #include "clang/AST/ASTContext.h"
15 
16 using namespace clang;
17 
18 LangOptions::LangOptions() {
19 #define LANGOPT(Name, Bits, Default, Description) Name = Default;
20 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) set##Name(Default);
21 #include "clang/Basic/LangOptions.def"
22 }
23 
24 void LangOptions::resetNonModularOptions() {
25 #define LANGOPT(Name, Bits, Default, Description)
26 #define BENIGN_LANGOPT(Name, Bits, Default, Description) Name = Default;
27 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
28   Name = Default;
29 #include "clang/Basic/LangOptions.def"
30 
31   // These options do not affect AST generation.
32   SanitizerBlacklistFiles.clear();
33   XRayAlwaysInstrumentFiles.clear();
34   XRayNeverInstrumentFiles.clear();
35 
36   CurrentModule.clear();
37   IsHeaderFile = false;
38 }
39 
40 bool LangOptions::isNoBuiltinFunc(StringRef FuncName) const {
41   for (unsigned i = 0, e = NoBuiltinFuncs.size(); i != e; ++i)
42     if (FuncName.equals(NoBuiltinFuncs[i]))
43       return true;
44   return false;
45 }
46 
47 VersionTuple LangOptions::getOpenCLVersionTuple() const {
48   const int Ver = OpenCLCPlusPlus ? OpenCLCPlusPlusVersion : OpenCLVersion;
49   return VersionTuple(Ver / 100, (Ver % 100) / 10);
50 }
51 
52 FPOptions FPOptions::defaultWithoutTrailingStorage(const ASTContext &C) {
53   FPOptions result(C.getLangOpts());
54   return result;
55 }
56 
57 bool FPOptions::requiresTrailingStorage(const ASTContext &C) {
58   return getAsOpaqueInt() != defaultWithoutTrailingStorage(C).getAsOpaqueInt();
59 }
60