//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
-//
+//
// 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.
+//
//===----------------------------------------------------------------------===//
//
// This file defines the (internal) constant folding interfaces for LLVM. These
// interfaces are used by the ConstantExpr::get* methods to automatically fold
// constants when possible.
//
-// These operators may return a null object if I don't know how to perform the
-// specified operation on the specified constant types.
+// These operators may return a null object if they don't know how to perform
+// the specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
#ifndef CONSTANTFOLDING_H
#define CONSTANTFOLDING_H
-#include <vector>
-
namespace llvm {
+ class Value;
class Constant;
class Type;
-
+
// Constant fold various types of instruction...
- Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
+ Constant *ConstantFoldCastInstruction(
+ unsigned opcode, ///< The opcode of the cast
+ const Constant *V, ///< The source constant
+ const Type *DestTy ///< The destination type
+ );
+ Constant *ConstantFoldSelectInstruction(const Constant *Cond,
+ const Constant *V1,
+ const Constant *V2);
+ Constant *ConstantFoldExtractElementInstruction(const Constant *Val,
+ const Constant *Idx);
+ Constant *ConstantFoldInsertElementInstruction(const Constant *Val,
+ const Constant *Elt,
+ const Constant *Idx);
+ Constant *ConstantFoldShuffleVectorInstruction(const Constant *V1,
+ const Constant *V2,
+ const Constant *Mask);
+ Constant *ConstantFoldExtractValueInstruction(const Constant *Agg,
+ const unsigned *Idxs,
+ unsigned NumIdx);
+ Constant *ConstantFoldInsertValueInstruction(const Constant *Agg,
+ const Constant *Val,
+ const unsigned* Idxs,
+ unsigned NumIdx);
Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
const Constant *V2);
+ Constant *ConstantFoldCompareInstruction(unsigned short predicate,
+ const Constant *C1,
+ const Constant *C2);
Constant *ConstantFoldGetElementPtr(const Constant *C,
- const std::vector<Constant*> &IdxList);
+ Constant* const *Idxs, unsigned NumIdx);
} // End llvm namespace
#endif