Instead of adding an isSS field to LiveInterval to denote stack slot. Use top bit...

[oota-llvm.git] / include / llvm / Instruction.h

diff --git a/include/llvm/Instruction.h b/include/llvm/Instruction.h
index fe688112f10e095cf6bd4a53cd7fac7a30e66f15..89e3e2349987b70d5fd25dff3ce4e347e061a228 100644 (file)
--- a/include/llvm/Instruction.h
+++ b/include/llvm/Instruction.h
@@ -20,7 +20,6 @@
 namespace llvm {
 
 struct AssemblyAnnotationWriter;
-class BinaryOperator;
 
 template<typename ValueSubClass, typename ItemParentClass>
   class SymbolTableListTraits;
@@ -50,6 +49,10 @@ public:
   ///
   bool mayWriteToMemory() const;
 
+  /// mayReadFromMemory - Return true if this instruction may read memory.
+  ///
+  bool mayReadFromMemory() const;
+  
   /// clone() - Create a copy of 'this' instruction that is identical in all
   /// ways except the following:
   ///   * The instruction has no parent
@@ -72,6 +75,13 @@ public:
   /// @brief Determine if one instruction is the same operation as another.
   bool isSameOperationAs(Instruction *I) const;
 
+  /// isUsedOutsideOfBlock - Return true if there are any uses of this
+  /// instruction in blocks other than the specified block.  Note that PHI nodes
+  /// are considered to evaluate their operands in the corresponding predecessor
+  /// block.
+  bool isUsedOutsideOfBlock(const BasicBlock *BB) const;
+  
+  
   /// use_back - Specialize the methods defined in Value, as we know that an
   /// instruction can only be used by other instructions.
   Instruction       *use_back()       { return cast<Instruction>(*use_begin());}
@@ -92,6 +102,10 @@ public:
   ///
   void eraseFromParent();
 
+  /// insertBefore - Insert an unlinked instructions into a basic block
+  /// immediately before the specified instruction.
+  void insertBefore(Instruction *InsertPos);
+
   /// moveBefore - Unlink this instruction from its current basic block and
   /// insert it into the basic block that MovePos lives in, right before
   /// MovePos.