forked from OSchip/llvm-project
57 lines
2.4 KiB
C++
57 lines
2.4 KiB
C++
//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the (internal) constant folding interfaces for LLVM. These
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// interfaces are used by the ConstantExpr::get* methods to automatically fold
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// constants when possible.
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//
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// These operators may return a null object if they don't know how to perform
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// the specified operation on the specified constant types.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CONSTANTFOLDING_H
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#define CONSTANTFOLDING_H
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#include "llvm/ADT/ArrayRef.h"
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namespace llvm {
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class Value;
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class Constant;
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class Type;
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// Constant fold various types of instruction...
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Constant *ConstantFoldCastInstruction(
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unsigned opcode, ///< The opcode of the cast
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Constant *V, ///< The source constant
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Type *DestTy ///< The destination type
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);
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Constant *ConstantFoldSelectInstruction(Constant *Cond,
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Constant *V1, Constant *V2);
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Constant *ConstantFoldExtractElementInstruction(Constant *Val, Constant *Idx);
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Constant *ConstantFoldInsertElementInstruction(Constant *Val, Constant *Elt,
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Constant *Idx);
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Constant *ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2,
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Constant *Mask);
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Constant *ConstantFoldExtractValueInstruction(Constant *Agg,
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ArrayRef<unsigned> Idxs);
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Constant *ConstantFoldInsertValueInstruction(Constant *Agg, Constant *Val,
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ArrayRef<unsigned> Idxs);
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Constant *ConstantFoldBinaryInstruction(unsigned Opcode, Constant *V1,
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Constant *V2);
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Constant *ConstantFoldCompareInstruction(unsigned short predicate,
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Constant *C1, Constant *C2);
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Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
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ArrayRef<Constant *> Idxs);
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Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
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ArrayRef<Value *> Idxs);
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} // End llvm namespace
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#endif
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