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//===--- OpenCLOptions.h ----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Defines the clang::OpenCLOptions class.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_BASIC_OPENCLOPTIONS_H
#define LLVM_CLANG_BASIC_OPENCLOPTIONS_H
#include "clang/Basic/LangOptions.h"
#include "llvm/ADT/StringMap.h"
namespace clang {
/// OpenCL supported extensions and optional core features
class OpenCLOptions {
struct Info {
bool Supported; // Is this option supported
bool Enabled; // Is this option enabled
unsigned Avail; // Option starts to be available in this OpenCL version
unsigned Core; // Option becomes (optional) core feature in this OpenCL
// version
Info(bool S = false, bool E = false, unsigned A = 100, unsigned C = ~0U)
:Supported(S), Enabled(E), Avail(A), Core(C){}
};
llvm::StringMap<Info> OptMap;
public:
bool isKnown(llvm::StringRef Ext) const {
return OptMap.find(Ext) != OptMap.end();
}
bool isEnabled(llvm::StringRef Ext) const {
return OptMap.find(Ext)->second.Enabled;
}
// Is supported as either an extension or an (optional) core feature for
// OpenCL version \p CLVer.
bool isSupported(llvm::StringRef Ext, LangOptions LO) const {
// In C++ mode all extensions should work at least as in v2.0.
auto CLVer = LO.OpenCLCPlusPlus ? 200 : LO.OpenCLVersion;
auto I = OptMap.find(Ext)->getValue();
return I.Supported && I.Avail <= CLVer;
}
// Is supported (optional) OpenCL core features for OpenCL version \p CLVer.
// For supported extension, return false.
bool isSupportedCore(llvm::StringRef Ext, LangOptions LO) const {
// In C++ mode all extensions should work at least as in v2.0.
auto CLVer = LO.OpenCLCPlusPlus ? 200 : LO.OpenCLVersion;
auto I = OptMap.find(Ext)->getValue();
return I.Supported && I.Avail <= CLVer && I.Core != ~0U && CLVer >= I.Core;
}
// Is supported OpenCL extension for OpenCL version \p CLVer.
// For supported (optional) core feature, return false.
bool isSupportedExtension(llvm::StringRef Ext, LangOptions LO) const {
// In C++ mode all extensions should work at least as in v2.0.
auto CLVer = LO.OpenCLCPlusPlus ? 200 : LO.OpenCLVersion;
auto I = OptMap.find(Ext)->getValue();
return I.Supported && I.Avail <= CLVer && (I.Core == ~0U || CLVer < I.Core);
}
void enable(llvm::StringRef Ext, bool V = true) {
OptMap[Ext].Enabled = V;
}
/// Enable or disable support for OpenCL extensions
/// \param Ext name of the extension optionally prefixed with
/// '+' or '-'
/// \param V used when \p Ext is not prefixed by '+' or '-'
void support(llvm::StringRef Ext, bool V = true) {
assert(!Ext.empty() && "Extension is empty.");
switch (Ext[0]) {
case '+':
V = true;
Ext = Ext.drop_front();
break;
case '-':
V = false;
Ext = Ext.drop_front();
break;
}
if (Ext.equals("all")) {
supportAll(V);
return;
}
OptMap[Ext].Supported = V;
}
OpenCLOptions(){
#define OPENCLEXT_INTERNAL(Ext, AvailVer, CoreVer) \
OptMap[#Ext].Avail = AvailVer; \
OptMap[#Ext].Core = CoreVer;
#include "clang/Basic/OpenCLExtensions.def"
}
void addSupport(const OpenCLOptions &Opts) {
for (auto &I:Opts.OptMap)
if (I.second.Supported)
OptMap[I.getKey()].Supported = true;
}
void copy(const OpenCLOptions &Opts) {
OptMap = Opts.OptMap;
}
// Turn on or off support of all options.
void supportAll(bool On = true) {
for (llvm::StringMap<Info>::iterator I = OptMap.begin(),
E = OptMap.end(); I != E; ++I)
I->second.Supported = On;
}
void disableAll() {
for (llvm::StringMap<Info>::iterator I = OptMap.begin(),
E = OptMap.end(); I != E; ++I)
I->second.Enabled = false;
}
void enableSupportedCore(LangOptions LO) {
for (llvm::StringMap<Info>::iterator I = OptMap.begin(), E = OptMap.end();
I != E; ++I)
if (isSupportedCore(I->getKey(), LO))
I->second.Enabled = true;
}
friend class ASTWriter;
friend class ASTReader;
};
} // end namespace clang
#endif
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