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| 14 | pmbaty | 1 | //==-- ConstantFold.h - DL-independent Constant Folding Interface -*- C++ -*-=// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines the DataLayout-independent constant folding interface. |
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| 10 | // When possible, the DataLayout-aware constant folding interface in |
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| 11 | // Analysis/ConstantFolding.h should be preferred. |
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| 12 | // |
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| 13 | // These interfaces are used by the ConstantExpr::get* methods to automatically |
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| 14 | // fold constants when possible. |
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| 15 | // |
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| 16 | // These operators may return a null object if they don't know how to perform |
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| 17 | // the specified operation on the specified constant types. |
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| 18 | // |
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| 19 | //===----------------------------------------------------------------------===// |
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| 20 | |||
| 21 | #ifndef LLVM_IR_CONSTANTFOLD_H |
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| 22 | #define LLVM_IR_CONSTANTFOLD_H |
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| 23 | |||
| 24 | #include "llvm/IR/InstrTypes.h" |
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| 25 | #include <optional> |
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| 26 | |||
| 27 | namespace llvm { |
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| 28 | template <typename T> class ArrayRef; |
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| 29 | class Value; |
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| 30 | class Constant; |
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| 31 | class Type; |
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| 32 | |||
| 33 | // Constant fold various types of instruction... |
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| 34 | Constant *ConstantFoldCastInstruction( |
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| 35 | unsigned opcode, ///< The opcode of the cast |
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| 36 | Constant *V, ///< The source constant |
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| 37 | Type *DestTy ///< The destination type |
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| 38 | ); |
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| 39 | Constant *ConstantFoldSelectInstruction(Constant *Cond, |
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| 40 | Constant *V1, Constant *V2); |
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| 41 | Constant *ConstantFoldExtractElementInstruction(Constant *Val, Constant *Idx); |
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| 42 | Constant *ConstantFoldInsertElementInstruction(Constant *Val, Constant *Elt, |
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| 43 | Constant *Idx); |
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| 44 | Constant *ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2, |
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| 45 | ArrayRef<int> Mask); |
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| 46 | Constant *ConstantFoldExtractValueInstruction(Constant *Agg, |
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| 47 | ArrayRef<unsigned> Idxs); |
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| 48 | Constant *ConstantFoldInsertValueInstruction(Constant *Agg, Constant *Val, |
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| 49 | ArrayRef<unsigned> Idxs); |
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| 50 | Constant *ConstantFoldUnaryInstruction(unsigned Opcode, Constant *V); |
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| 51 | Constant *ConstantFoldBinaryInstruction(unsigned Opcode, Constant *V1, |
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| 52 | Constant *V2); |
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| 53 | Constant *ConstantFoldCompareInstruction(CmpInst::Predicate Predicate, |
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| 54 | Constant *C1, Constant *C2); |
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| 55 | Constant *ConstantFoldGetElementPtr(Type *Ty, Constant *C, bool InBounds, |
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| 56 | std::optional<unsigned> InRangeIndex, |
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| 57 | ArrayRef<Value *> Idxs); |
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| 58 | } // End llvm namespace |
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| 59 | |||
| 60 | #endif |