Really revert all changes from r289979. Apparently conflict resolution failed

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@289997 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 35 insertions, 76 deletions

diff --git a/include/clang/Basic/OpenCLOptions.h b/include/clang/Basic/OpenCLOptions.h
index a51494fa2e..fa52ae723f 100644
--- a/include/clang/Basic/OpenCLOptions.h
+++ b/include/clang/Basic/OpenCLOptions.h
@@ -15,122 +15,81 @@
 #ifndef LLVM_CLANG_BASIC_OPENCLOPTIONS_H
 #define LLVM_CLANG_BASIC_OPENCLOPTIONS_H
 
-#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
 
 namespace clang {
 
 /// \brief 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, unsigned CLVer) const {
-    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, unsigned CLVer) const {
-    auto I = OptMap.find(Ext)->getValue();
-    return I.Supported && I.Avail <= CLVer &&
-      I.Core != ~0U && CLVer >= I.Core;
-  }
+#define OPENCLEXT(nm) unsigned nm : 1;
+#include "clang/Basic/OpenCLExtensions.def"
 
-  // Is supported OpenCL extension for OpenCL version \p CLVer.
-  // For supported (optional) core feature, return false.
- bool isSupportedExtension(llvm::StringRef Ext, unsigned CLVer) const {
-    auto I = OptMap.find(Ext)->getValue();
-    return I.Supported && I.Avail <= CLVer &&
-      (I.Core == ~0U || CLVer < I.Core);
+  OpenCLOptions() {
+#define OPENCLEXT(nm)   nm = 0;
+#include "clang/Basic/OpenCLExtensions.def"
   }
 
-  void enable(llvm::StringRef Ext, bool V = true) {
-    OptMap[Ext].Enabled = V;
+  // Enable or disable all options.
+  void setAll(bool Enable = true) {
+#define OPENCLEXT(nm)   nm = Enable;
+#include "clang/Basic/OpenCLExtensions.def"
   }
 
   /// \brief Enable or disable support for OpenCL extensions
   /// \param Ext name of the extension optionally prefixed with
   ///        '+' or '-'
   /// \param Enable used when \p Ext is not prefixed by '+' or '-'
-  void support(llvm::StringRef Ext, bool V = true) {
+  void set(llvm::StringRef Ext, bool Enable = true) {
     assert(!Ext.empty() && "Extension is empty.");
 
     switch (Ext[0]) {
     case '+':
-      V = true;
+      Enable = true;
       Ext = Ext.drop_front();
       break;
     case '-':
-      V = false;
+      Enable = false;
       Ext = Ext.drop_front();
       break;
     }
 
     if (Ext.equals("all")) {
-      supportAll(V);
+      setAll(Enable);
       return;
     }
-    OptMap[Ext].Supported = V;
-  }
 
-  OpenCLOptions(){
-#define OPENCLEXT_INTERNAL(Ext, AvailVer, CoreVer) \
-    OptMap[#Ext].Avail = AvailVer; \
-    OptMap[#Ext].Core = CoreVer;
+#define OPENCLEXT(nm)       \
+    if (Ext.equals(#nm)) {  \
+      nm = Enable;          \
+    }
 #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;
+  // Is supported with OpenCL version \p OCLVer.
+#define OPENCLEXT_INTERNAL(Ext, Avail, ...) \
+  bool is_##Ext##_supported(unsigned OCLVer) const { \
+    return Ext && OCLVer >= Avail; \
   }
+#include "clang/Basic/OpenCLExtensions.def"
 
-  // 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;
+  // Is supported OpenCL extension with OpenCL version \p OCLVer.
+  // For supported optional core feature, return false.
+#define OPENCLEXT_INTERNAL(Ext, Avail, Core) \
+  bool is_##Ext##_supported_extension(unsigned CLVer) const { \
+    return is_##Ext##_supported(CLVer) && (Core == ~0U || CLVer < Core); \
   }
+#include "clang/Basic/OpenCLExtensions.def"
 
-  void enableSupportedCore(unsigned CLVer) {
-    for (llvm::StringMap<Info>::iterator I = OptMap.begin(),
-         E = OptMap.end(); I != E; ++I)
-      if (isSupportedCore(I->getKey(), CLVer))
-        I->second.Enabled = true;
+  // Is supported OpenCL core features with OpenCL version \p OCLVer.
+  // For supported extension, return false.
+#define OPENCLEXT_INTERNAL(Ext, Avail, Core) \
+  bool is_##Ext##_supported_core(unsigned CLVer) const { \
+    return is_##Ext##_supported(CLVer) && Core != ~0U && CLVer >= Core; \
   }
+#include "clang/Basic/OpenCLExtensions.def"
 
-  friend class ASTWriter;
-  friend class ASTReader;
 };
 
 }  // end namespace clang