Add missing slash to make the doxygen output less confusing.

[oota-llvm.git] / include / llvm / IR / DataLayout.h

diff --git a/include/llvm/IR/DataLayout.h b/include/llvm/IR/DataLayout.h
index f9ab9cf94c8e86ad422816216a93cd2d97eb7a7e..59dca636bd1d2dcd2b0cb4bd051f7ffb60bba147 100644 (file)
--- a/include/llvm/IR/DataLayout.h
+++ b/include/llvm/IR/DataLayout.h
@@ -110,12 +110,20 @@ private:
 
   /// Alignments - Where the primitive type alignment data is stored.
   ///
-  /// @sa init().
+  /// @sa reset().
   /// @note Could support multiple size pointer alignments, e.g., 32-bit
   /// pointers vs. 64-bit pointers by extending LayoutAlignment, but for now,
   /// we don't.
   SmallVector<LayoutAlignElem, 16> Alignments;
-  DenseMap<unsigned, PointerAlignElem> Pointers;
+  typedef SmallVector<PointerAlignElem, 8> PointersTy;
+  PointersTy Pointers;
+
+  PointersTy::const_iterator
+  findPointerLowerBound(uint32_t AddressSpace) const {
+    return const_cast<DataLayout *>(this)->findPointerLowerBound(AddressSpace);
+  }
+
+  PointersTy::iterator findPointerLowerBound(uint32_t AddressSpace);
 
   /// InvalidAlignmentElem - This member is a signal that a requested alignment
   /// type and bit width were not found in the SmallVector.
@@ -161,30 +169,38 @@ private:
   /// malformed.
   void parseSpecifier(StringRef LayoutDescription);
 
+  // Free all internal data structures.
+  void clear();
+
 public:
-  /// Constructs a DataLayout from a specification string. See init().
-  explicit DataLayout(StringRef LayoutDescription) { init(LayoutDescription); }
+  /// Constructs a DataLayout from a specification string. See reset().
+  explicit DataLayout(StringRef LayoutDescription) : LayoutMap(0) {
+    reset(LayoutDescription);
+  }
 
   /// Initialize target data from properties stored in the module.
   explicit DataLayout(const Module *M);
 
-  DataLayout(const DataLayout &DL) { *this = DL; }
+  DataLayout(const DataLayout &DL) : LayoutMap(0) { *this = DL; }
 
   DataLayout &operator=(const DataLayout &DL) {
+    clear();
     LittleEndian = DL.isLittleEndian();
     StackNaturalAlign = DL.StackNaturalAlign;
     ManglingMode = DL.ManglingMode;
     LegalIntWidths = DL.LegalIntWidths;
     Alignments = DL.Alignments;
     Pointers = DL.Pointers;
-    LayoutMap = 0;
     return *this;
   }
 
+  bool operator==(const DataLayout &Other) const;
+  bool operator!=(const DataLayout &Other) const { return !(*this == Other); }
+
   ~DataLayout();  // Not virtual, do not subclass this class
 
   /// Parse a data layout string (with fallback to default values).
-  void init(StringRef LayoutDescription);
+  void reset(StringRef LayoutDescription);
 
   /// Layout endianness...
   bool isLittleEndian() const { return LittleEndian; }
@@ -203,8 +219,8 @@ public:
   /// The width is specified in bits.
   ///
   bool isLegalInteger(unsigned Width) const {
-    for (unsigned i = 0, e = (unsigned)LegalIntWidths.size(); i != e; ++i)
-      if (LegalIntWidths[i] == Width)
+    for (unsigned LegalIntWidth : LegalIntWidths)
+      if (LegalIntWidth == Width)
         return true;
     return false;
   }
@@ -265,10 +281,10 @@ public:
   /// fitsInLegalInteger - This function returns true if the specified type fits
   /// in a native integer type supported by the CPU.  For example, if the CPU
   /// only supports i32 as a native integer type, then i27 fits in a legal
-  // integer type but i45 does not.
+  /// integer type but i45 does not.
   bool fitsInLegalInteger(unsigned Width) const {
-    for (unsigned i = 0, e = (unsigned)LegalIntWidths.size(); i != e; ++i)
-      if (Width <= LegalIntWidths[i])
+    for (unsigned LegalIntWidth : LegalIntWidths)
+      if (Width <= LegalIntWidth)
         return true;
     return false;
   }
@@ -276,34 +292,18 @@ public:
   /// Layout pointer alignment
   /// FIXME: The defaults need to be removed once all of
   /// the backends/clients are updated.
-  unsigned getPointerABIAlignment(unsigned AS = 0) const {
-    DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
-    if (val == Pointers.end()) {
-      val = Pointers.find(0);
-    }
-    return val->second.ABIAlign;
-  }
+  unsigned getPointerABIAlignment(unsigned AS = 0) const;
 
   /// Return target's alignment for stack-based pointers
   /// FIXME: The defaults need to be removed once all of
   /// the backends/clients are updated.
-  unsigned getPointerPrefAlignment(unsigned AS = 0) const {
-    DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
-    if (val == Pointers.end()) {
-      val = Pointers.find(0);
-    }
-    return val->second.PrefAlign;
-  }
+  unsigned getPointerPrefAlignment(unsigned AS = 0) const;
+
   /// Layout pointer size
   /// FIXME: The defaults need to be removed once all of
   /// the backends/clients are updated.
-  unsigned getPointerSize(unsigned AS = 0) const {
-    DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
-    if (val == Pointers.end()) {
-      val = Pointers.find(0);
-    }
-    return val->second.TypeByteWidth;
-  }
+  unsigned getPointerSize(unsigned AS = 0) const;
+
   /// Layout pointer size, in bits
   /// FIXME: The defaults need to be removed once all of
   /// the backends/clients are updated.
@@ -455,10 +455,10 @@ public:
 
   const DataLayout &getDataLayout() const { return DL; }
 
+  // For use with the C API. C++ code should always use the constructor that
+  // takes a module.
   explicit DataLayoutPass(const DataLayout &DL);
 
-  explicit DataLayoutPass(StringRef LayoutDescription);
-
   explicit DataLayoutPass(const Module *M);
 
   static char ID; // Pass identification, replacement for typeid