LLVM 19.0.0git
IRBuilderFolder.h
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1//===- IRBuilderFolder.h - Const folder interface for IRBuilder -*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines for constant folding interface used by IRBuilder.
10// It is implemented by ConstantFolder (default), TargetFolder and NoFoler.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_IR_IRBUILDERFOLDER_H
15#define LLVM_IR_IRBUILDERFOLDER_H
16
17#include "llvm/ADT/ArrayRef.h"
19#include "llvm/IR/InstrTypes.h"
20#include "llvm/IR/Instruction.h"
21
22namespace llvm {
23
24/// IRBuilderFolder - Interface for constant folding in IRBuilder.
26public:
28
29 //===--------------------------------------------------------------------===//
30 // Value-based folders.
31 //
32 // Return an existing value or a constant if the operation can be simplified.
33 // Otherwise return nullptr.
34 //===--------------------------------------------------------------------===//
35
37 Value *RHS) const = 0;
38
40 Value *RHS, bool IsExact) const = 0;
41
43 Value *RHS, bool HasNUW,
44 bool HasNSW) const = 0;
45
47 Value *RHS, FastMathFlags FMF) const = 0;
48
50 FastMathFlags FMF) const = 0;
51
53 Value *RHS) const = 0;
54
55 virtual Value *FoldGEP(Type *Ty, Value *Ptr, ArrayRef<Value *> IdxList,
56 GEPNoWrapFlags NW) const = 0;
57
58 virtual Value *FoldSelect(Value *C, Value *True, Value *False) const = 0;
59
61 ArrayRef<unsigned> IdxList) const = 0;
62
63 virtual Value *FoldInsertValue(Value *Agg, Value *Val,
64 ArrayRef<unsigned> IdxList) const = 0;
65
66 virtual Value *FoldExtractElement(Value *Vec, Value *Idx) const = 0;
67
68 virtual Value *FoldInsertElement(Value *Vec, Value *NewElt,
69 Value *Idx) const = 0;
70
72 ArrayRef<int> Mask) const = 0;
73
75 Type *DestTy) const = 0;
76
77 virtual Value *
79 Instruction *FMFSource = nullptr) const = 0;
80
81 //===--------------------------------------------------------------------===//
82 // Cast/Conversion Operators
83 //===--------------------------------------------------------------------===//
84
85 virtual Value *CreatePointerCast(Constant *C, Type *DestTy) const = 0;
87 Type *DestTy) const = 0;
88};
89
90} // end namespace llvm
91
92#endif // LLVM_IR_IRBUILDERFOLDER_H
Returns the sub type a function will return at a given Idx Should correspond to the result type of an ExtractValue instruction executed with just that one unsigned Idx
#define P(N)
Value * RHS
Value * LHS
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
Predicate
This enumeration lists the possible predicates for CmpInst subclasses.
Definition: InstrTypes.h:993
This is an important base class in LLVM.
Definition: Constant.h:41
This class represents an Operation in the Expression.
Convenience struct for specifying and reasoning about fast-math flags.
Definition: FMF.h:20
Represents flags for the getelementptr instruction/expression.
IRBuilderFolder - Interface for constant folding in IRBuilder.
virtual Value * FoldCmp(CmpInst::Predicate P, Value *LHS, Value *RHS) const =0
virtual Value * FoldUnOpFMF(Instruction::UnaryOps Opc, Value *V, FastMathFlags FMF) const =0
virtual Value * FoldBinOp(Instruction::BinaryOps Opc, Value *LHS, Value *RHS) const =0
virtual Value * FoldBinOpFMF(Instruction::BinaryOps Opc, Value *LHS, Value *RHS, FastMathFlags FMF) const =0
virtual Value * FoldSelect(Value *C, Value *True, Value *False) const =0
virtual Value * FoldShuffleVector(Value *V1, Value *V2, ArrayRef< int > Mask) const =0
virtual Value * CreatePointerBitCastOrAddrSpaceCast(Constant *C, Type *DestTy) const =0
virtual ~IRBuilderFolder()
virtual Value * FoldInsertElement(Value *Vec, Value *NewElt, Value *Idx) const =0
virtual Value * CreatePointerCast(Constant *C, Type *DestTy) const =0
virtual Value * FoldCast(Instruction::CastOps Op, Value *V, Type *DestTy) const =0
virtual Value * FoldBinaryIntrinsic(Intrinsic::ID ID, Value *LHS, Value *RHS, Type *Ty, Instruction *FMFSource=nullptr) const =0
virtual Value * FoldExtractElement(Value *Vec, Value *Idx) const =0
virtual Value * FoldExactBinOp(Instruction::BinaryOps Opc, Value *LHS, Value *RHS, bool IsExact) const =0
virtual Value * FoldGEP(Type *Ty, Value *Ptr, ArrayRef< Value * > IdxList, GEPNoWrapFlags NW) const =0
virtual Value * FoldInsertValue(Value *Agg, Value *Val, ArrayRef< unsigned > IdxList) const =0
virtual Value * FoldNoWrapBinOp(Instruction::BinaryOps Opc, Value *LHS, Value *RHS, bool HasNUW, bool HasNSW) const =0
virtual Value * FoldExtractValue(Value *Agg, ArrayRef< unsigned > IdxList) const =0
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
LLVM Value Representation.
Definition: Value.h:74
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18