Imported Upstream version 1.0.0+dfsg1

[rustc.git] / src / llvm / include / llvm / MC / SubtargetFeature.h

diff --git a/src/llvm/include/llvm/MC/SubtargetFeature.h b/src/llvm/include/llvm/MC/SubtargetFeature.h
index 87c5fd3969d53cb44a100a49a208716dd5d7b19b..bfecb8ba6ab0a22dba299302c1faa480c4295ff9 100644 (file)
--- a/src/llvm/include/llvm/MC/SubtargetFeature.h
+++ b/src/llvm/include/llvm/MC/SubtargetFeature.h
@@ -18,7 +18,7 @@
 #ifndef LLVM_MC_SUBTARGETFEATURE_H
 #define LLVM_MC_SUBTARGETFEATURE_H
 
-#include <vector>
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/Support/DataTypes.h"
 
@@ -37,9 +37,9 @@ struct SubtargetFeatureKV {
   uint64_t Value;                       // K-V integer value
   uint64_t Implies;                     // K-V bit mask
 
-  // Compare routine for std binary search
-  bool operator<(const SubtargetFeatureKV &S) const {
-    return strcmp(Key, S.Key) < 0;
+  // Compare routine for std::lower_bound
+  bool operator<(StringRef S) const {
+    return StringRef(Key) < S;
   }
 };
 
@@ -52,9 +52,9 @@ struct SubtargetInfoKV {
   const char *Key;                      // K-V key string
   const void *Value;                    // K-V pointer value
 
-  // Compare routine for std binary search
-  bool operator<(const SubtargetInfoKV &S) const {
-    return strcmp(Key, S.Key) < 0;
+  // Compare routine for std::lower_bound
+  bool operator<(StringRef S) const {
+    return StringRef(Key) < S;
   }
 };
 
@@ -62,10 +62,8 @@ struct SubtargetInfoKV {
 ///
 /// SubtargetFeatures - Manages the enabling and disabling of subtarget
 /// specific features.  Features are encoded as a string of the form
-///   "cpu,+attr1,+attr2,-attr3,...,+attrN"
+///   "+attr1,+attr2,-attr3,...,+attrN"
 /// A comma separates each feature from the next (all lowercase.)
-/// The first feature is always the CPU subtype (eg. pentiumm).  If the CPU
-/// value is "generic" then the CPU subtype should be generic for the target.
 /// Each of the remaining features is prefixed with + or - indicating whether
 /// that feature should be enabled or disabled contrary to the cpu
 /// specification.
@@ -74,30 +72,23 @@ struct SubtargetInfoKV {
 class SubtargetFeatures {
   std::vector<std::string> Features;    // Subtarget features as a vector
 public:
-  explicit SubtargetFeatures(const StringRef Initial = "");
+  explicit SubtargetFeatures(StringRef Initial = "");
 
   /// Features string accessors.
   std::string getString() const;
 
   /// Adding Features.
-  void AddFeature(const StringRef String, bool IsEnabled = true);
+  void AddFeature(StringRef String);
 
   /// ToggleFeature - Toggle a feature and returns the newly updated feature
   /// bits.
-  uint64_t ToggleFeature(uint64_t Bits, const StringRef String,
-                         const SubtargetFeatureKV *FeatureTable,
-                         size_t FeatureTableSize);
+  uint64_t ToggleFeature(uint64_t Bits, StringRef String,
+                         ArrayRef<SubtargetFeatureKV> FeatureTable);
 
   /// Get feature bits of a CPU.
-  uint64_t getFeatureBits(const StringRef CPU,
-                          const SubtargetFeatureKV *CPUTable,
-                          size_t CPUTableSize,
-                          const SubtargetFeatureKV *FeatureTable,
-                          size_t FeatureTableSize);
-
-  /// Get scheduling itinerary of a CPU.
-  const void *getItinerary(const StringRef CPU,
-                           const SubtargetInfoKV *Table, size_t TableSize);
+  uint64_t getFeatureBits(StringRef CPU,
+                          ArrayRef<SubtargetFeatureKV> CPUTable,
+                          ArrayRef<SubtargetFeatureKV> FeatureTable);
 
   /// Print feature string.
   void print(raw_ostream &OS) const;
@@ -105,8 +96,7 @@ public:
   // Dump feature info.
   void dump() const;
 
-  /// Retrieve a formatted string of the default features for the specified
-  /// target triple.
+  /// Adds the default features for the specified target triple.
   void getDefaultSubtargetFeatures(const Triple& Triple);
 };