Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc...

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

diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index ce5885fbc7ba0d58ae6b10d9a2064bf5b62f5384..7441a104b56f8b5c2847c569875cfa874302a514 100644 (file)
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -29,19 +29,14 @@ namespace llvm {
 ///
 class TerminatorInst : public Instruction {
 protected:
-  TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
-                 Instruction *InsertBefore = 0);
   TerminatorInst(const Type *Ty, Instruction::TermOps iType,
-                  Use *Ops, unsigned NumOps,
-                 const std::string &Name = "", Instruction *InsertBefore = 0)
-    : Instruction(Ty, iType, Ops, NumOps, Name, InsertBefore) {}
+                 Use *Ops, unsigned NumOps,
+                 Instruction *InsertBefore = 0)
+    : Instruction(Ty, iType, Ops, NumOps, InsertBefore) {}
 
-  TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
-                 BasicBlock *InsertAtEnd);
   TerminatorInst(const Type *Ty, Instruction::TermOps iType,
-                  Use *Ops, unsigned NumOps,
-                 const std::string &Name, BasicBlock *InsertAtEnd)
-    : Instruction(Ty, iType, Ops, NumOps, Name, InsertAtEnd) {}
+                 Use *Ops, unsigned NumOps, BasicBlock *InsertAtEnd)
+    : Instruction(Ty, iType, Ops, NumOps, InsertAtEnd) {}
 
   // Out of line virtual method, so the vtable, etc has a home.
   ~TerminatorInst();
@@ -89,14 +84,15 @@ public:
 
 class UnaryInstruction : public Instruction {
   Use Op;
+  
+  // avoiding warning: 'this' : used in base member initializer list
+  UnaryInstruction* this_() { return this; }
 protected:
-  UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
-                   const char *Name = 0, Instruction *IB = 0)
-    : Instruction(Ty, iType, &Op, 1, Name, IB), Op(V, this) {
+  UnaryInstruction(const Type *Ty, unsigned iType, Value *V, Instruction *IB =0)
+    : Instruction(Ty, iType, &Op, 1, IB), Op(V, this_()) {
   }
-  UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
-                   const char *Name, BasicBlock *IAE)
-    : Instruction(Ty, iType, &Op, 1, Name, IAE), Op(V, this) {
+  UnaryInstruction(const Type *Ty, unsigned iType, Value *V, BasicBlock *IAE)
+    : Instruction(Ty, iType, &Op, 1, IAE), Op(V, this_()) {
   }
 public:
   // Out of line virtual method, so the vtable, etc has a home.
@@ -112,6 +108,20 @@ public:
     Op = Val;
   }
   unsigned getNumOperands() const { return 1; }
+  
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const UnaryInstruction *) { return true; }
+  static inline bool classof(const Instruction *I) {
+    return I->getOpcode() == Instruction::Malloc ||
+           I->getOpcode() == Instruction::Alloca ||
+           I->getOpcode() == Instruction::Free ||
+           I->getOpcode() == Instruction::Load ||
+           I->getOpcode() == Instruction::VAArg ||
+           (I->getOpcode() >= CastOpsBegin && I->getOpcode() < CastOpsEnd);
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
 };
 
 //===----------------------------------------------------------------------===//
@@ -123,20 +133,9 @@ class BinaryOperator : public Instruction {
 protected:
   void init(BinaryOps iType);
   BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
-                 const std::string &Name, Instruction *InsertBefore)
-    : Instruction(Ty, iType, Ops, 2, Name, InsertBefore) {
-      Ops[0].init(S1, this);
-      Ops[1].init(S2, this);
-    init(iType);
-  }
+                 const std::string &Name, Instruction *InsertBefore);
   BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
-                 const std::string &Name, BasicBlock *InsertAtEnd)
-    : Instruction(Ty, iType, Ops, 2, Name, InsertAtEnd) {
-    Ops[0].init(S1, this);
-    Ops[1].init(S2, this);
-    init(iType);
-  }
-
+                 const std::string &Name, BasicBlock *InsertAtEnd);
 public:
 
   /// Transparently provide more efficient getOperand methods.
@@ -264,13 +263,13 @@ protected:
   /// @brief Constructor with insert-before-instruction semantics for subclasses
   CastInst(const Type *Ty, unsigned iType, Value *S, 
            const std::string &Name = "", Instruction *InsertBefore = 0)
-    : UnaryInstruction(Ty, iType, S, 0, InsertBefore) {
+    : UnaryInstruction(Ty, iType, S, InsertBefore) {
     setName(Name);
   }
   /// @brief Constructor with insert-at-end-of-block semantics for subclasses
   CastInst(const Type *Ty, unsigned iType, Value *S, 
            const std::string &Name, BasicBlock *InsertAtEnd)
-    : UnaryInstruction(Ty, iType, S, 0, InsertAtEnd) {
+    : UnaryInstruction(Ty, iType, S, InsertAtEnd) {
     setName(Name);
   }
 public:
@@ -399,8 +398,14 @@ public:
     BasicBlock *InsertAtEnd  ///< The block to insert the instruction into
   );
 
+  /// @brief Check whether it is valid to call getCastOpcode for these types.
+  static bool isCastable(
+    const Type *SrcTy, ///< The Type from which the value should be cast.
+    const Type *DestTy ///< The Type to which the value should be cast.
+  );
+
   /// Returns the opcode necessary to cast Val into Ty using usual casting
-  /// rules. 
+  /// rules.
   /// @brief Infer the opcode for cast operand and type
   static Instruction::CastOps getCastOpcode(
     const Value *Val, ///< The value to cast
@@ -418,7 +423,7 @@ public:
 
   /// A lossless cast is one that does not alter the basic value. It implies
   /// a no-op cast but is more stringent, preventing things like int->float,
-  /// long->double, int->ptr, or packed->anything. 
+  /// long->double, int->ptr, or vector->anything. 
   /// @returns true iff the cast is lossless.
   /// @brief Determine if this is a lossless cast.
   bool isLosslessCast() const;
@@ -512,9 +517,6 @@ public:
                          Value *S2, const std::string &Name, 
                          BasicBlock *InsertAtEnd);
 
-  /// @brief Implement superclass method.
-  virtual CmpInst *clone() const;
-
   /// @brief Get the opcode casted to the right type
   OtherOps getOpcode() const {
     return static_cast<OtherOps>(Instruction::getOpcode());