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ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 331 insertions, 0 deletions

diff --git a/contrib/libs/llvm12/include/llvm/IR/NoFolder.h b/contrib/libs/llvm12/include/llvm/IR/NoFolder.h
new file mode 100644
index 0000000000..7d18bf87ed
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+++ b/contrib/libs/llvm12/include/llvm/IR/NoFolder.h
@@ -0,0 +1,331 @@
+#pragma once
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+//===- NoFolder.h - Constant folding helper ---------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the NoFolder class, a helper for IRBuilder.  It provides
+// IRBuilder with a set of methods for creating unfolded constants.  This is
+// useful for learners trying to understand how LLVM IR works, and who don't
+// want details to be hidden by the constant folder.  For general constant
+// creation and folding, use ConstantExpr and the routines in
+// llvm/Analysis/ConstantFolding.h.
+//
+// Note: since it is not actually possible to create unfolded constants, this
+// class returns instructions rather than constants.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_IR_NOFOLDER_H
+#define LLVM_IR_NOFOLDER_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/InstrTypes.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/IRBuilderFolder.h"
+
+namespace llvm {
+
+/// NoFolder - Create "constants" (actually, instructions) with no folding.
+class NoFolder final : public IRBuilderFolder {
+  virtual void anchor();
+
+public:
+  explicit NoFolder() = default;
+
+  //===--------------------------------------------------------------------===//
+  // Binary Operators
+  //===--------------------------------------------------------------------===//
+
+  Instruction *CreateAdd(Constant *LHS, Constant *RHS,
+                         bool HasNUW = false,
+                         bool HasNSW = false) const override {
+    BinaryOperator *BO = BinaryOperator::CreateAdd(LHS, RHS);
+    if (HasNUW) BO->setHasNoUnsignedWrap();
+    if (HasNSW) BO->setHasNoSignedWrap();
+    return BO;
+  }
+
+  Instruction *CreateFAdd(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateFAdd(LHS, RHS);
+  }
+
+  Instruction *CreateSub(Constant *LHS, Constant *RHS,
+                         bool HasNUW = false,
+                         bool HasNSW = false) const override {
+    BinaryOperator *BO = BinaryOperator::CreateSub(LHS, RHS);
+    if (HasNUW) BO->setHasNoUnsignedWrap();
+    if (HasNSW) BO->setHasNoSignedWrap();
+    return BO;
+  }
+
+  Instruction *CreateFSub(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateFSub(LHS, RHS);
+  }
+
+  Instruction *CreateMul(Constant *LHS, Constant *RHS,
+                         bool HasNUW = false,
+                         bool HasNSW = false) const override {
+    BinaryOperator *BO = BinaryOperator::CreateMul(LHS, RHS);
+    if (HasNUW) BO->setHasNoUnsignedWrap();
+    if (HasNSW) BO->setHasNoSignedWrap();
+    return BO;
+  }
+
+  Instruction *CreateFMul(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateFMul(LHS, RHS);
+  }
+
+  Instruction *CreateUDiv(Constant *LHS, Constant *RHS,
+                          bool isExact = false) const override {
+    if (!isExact)
+      return BinaryOperator::CreateUDiv(LHS, RHS);
+    return BinaryOperator::CreateExactUDiv(LHS, RHS);
+  }
+
+  Instruction *CreateSDiv(Constant *LHS, Constant *RHS,
+                          bool isExact = false) const override {
+    if (!isExact)
+      return BinaryOperator::CreateSDiv(LHS, RHS);
+    return BinaryOperator::CreateExactSDiv(LHS, RHS);
+  }
+
+  Instruction *CreateFDiv(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateFDiv(LHS, RHS);
+  }
+
+  Instruction *CreateURem(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateURem(LHS, RHS);
+  }
+
+  Instruction *CreateSRem(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateSRem(LHS, RHS);
+  }
+
+  Instruction *CreateFRem(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateFRem(LHS, RHS);
+  }
+
+  Instruction *CreateShl(Constant *LHS, Constant *RHS, bool HasNUW = false,
+                         bool HasNSW = false) const override {
+    BinaryOperator *BO = BinaryOperator::CreateShl(LHS, RHS);
+    if (HasNUW) BO->setHasNoUnsignedWrap();
+    if (HasNSW) BO->setHasNoSignedWrap();
+    return BO;
+  }
+
+  Instruction *CreateLShr(Constant *LHS, Constant *RHS,
+                          bool isExact = false) const override {
+    if (!isExact)
+      return BinaryOperator::CreateLShr(LHS, RHS);
+    return BinaryOperator::CreateExactLShr(LHS, RHS);
+  }
+
+  Instruction *CreateAShr(Constant *LHS, Constant *RHS,
+                          bool isExact = false) const override {
+    if (!isExact)
+      return BinaryOperator::CreateAShr(LHS, RHS);
+    return BinaryOperator::CreateExactAShr(LHS, RHS);
+  }
+
+  Instruction *CreateAnd(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateAnd(LHS, RHS);
+  }
+
+  Instruction *CreateOr(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateOr(LHS, RHS);
+  }
+
+  Instruction *CreateXor(Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::CreateXor(LHS, RHS);
+  }
+
+  Instruction *CreateBinOp(Instruction::BinaryOps Opc,
+                           Constant *LHS, Constant *RHS) const override {
+    return BinaryOperator::Create(Opc, LHS, RHS);
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Unary Operators
+  //===--------------------------------------------------------------------===//
+
+  Instruction *CreateNeg(Constant *C,
+                         bool HasNUW = false,
+                         bool HasNSW = false) const override {
+    BinaryOperator *BO = BinaryOperator::CreateNeg(C);
+    if (HasNUW) BO->setHasNoUnsignedWrap();
+    if (HasNSW) BO->setHasNoSignedWrap();
+    return BO;
+  }
+
+  Instruction *CreateFNeg(Constant *C) const override {
+    return UnaryOperator::CreateFNeg(C);
+  }
+
+  Instruction *CreateNot(Constant *C) const override {
+    return BinaryOperator::CreateNot(C);
+  }
+
+  Instruction *CreateUnOp(Instruction::UnaryOps Opc,
+                          Constant *C) const override {
+    return UnaryOperator::Create(Opc, C);
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Memory Instructions
+  //===--------------------------------------------------------------------===//
+
+  Constant *CreateGetElementPtr(Type *Ty, Constant *C,
+                                ArrayRef<Constant *> IdxList) const override {
+    return ConstantExpr::getGetElementPtr(Ty, C, IdxList);
+  }
+
+  Constant *CreateGetElementPtr(Type *Ty, Constant *C,
+                                Constant *Idx) const override {
+    // This form of the function only exists to avoid ambiguous overload
+    // warnings about whether to convert Idx to ArrayRef<Constant *> or
+    // ArrayRef<Value *>.
+    return ConstantExpr::getGetElementPtr(Ty, C, Idx);
+  }
+
+  Instruction *CreateGetElementPtr(Type *Ty, Constant *C,
+                                   ArrayRef<Value *> IdxList) const override {
+    return GetElementPtrInst::Create(Ty, C, IdxList);
+  }
+
+  Constant *CreateInBoundsGetElementPtr(
+      Type *Ty, Constant *C, ArrayRef<Constant *> IdxList) const override {
+    return ConstantExpr::getInBoundsGetElementPtr(Ty, C, IdxList);
+  }
+
+  Constant *CreateInBoundsGetElementPtr(Type *Ty, Constant *C,
+                                        Constant *Idx) const override {
+    // This form of the function only exists to avoid ambiguous overload
+    // warnings about whether to convert Idx to ArrayRef<Constant *> or
+    // ArrayRef<Value *>.
+    return ConstantExpr::getInBoundsGetElementPtr(Ty, C, Idx);
+  }
+
+  Instruction *CreateInBoundsGetElementPtr(
+      Type *Ty, Constant *C, ArrayRef<Value *> IdxList) const override {
+    return GetElementPtrInst::CreateInBounds(Ty, C, IdxList);
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Cast/Conversion Operators
+  //===--------------------------------------------------------------------===//
+
+  Instruction *CreateCast(Instruction::CastOps Op, Constant *C,
+                          Type *DestTy) const override {
+    return CastInst::Create(Op, C, DestTy);
+  }
+
+  Instruction *CreatePointerCast(Constant *C, Type *DestTy) const override {
+    return CastInst::CreatePointerCast(C, DestTy);
+  }
+
+  Instruction *CreatePointerBitCastOrAddrSpaceCast(
+      Constant *C, Type *DestTy) const override {
+    return CastInst::CreatePointerBitCastOrAddrSpaceCast(C, DestTy);
+  }
+
+  Instruction *CreateIntCast(Constant *C, Type *DestTy,
+                             bool isSigned) const override {
+    return CastInst::CreateIntegerCast(C, DestTy, isSigned);
+  }
+
+  Instruction *CreateFPCast(Constant *C, Type *DestTy) const override {
+    return CastInst::CreateFPCast(C, DestTy);
+  }
+
+  Instruction *CreateBitCast(Constant *C, Type *DestTy) const override {
+    return CreateCast(Instruction::BitCast, C, DestTy);
+  }
+
+  Instruction *CreateIntToPtr(Constant *C, Type *DestTy) const override {
+    return CreateCast(Instruction::IntToPtr, C, DestTy);
+  }
+
+  Instruction *CreatePtrToInt(Constant *C, Type *DestTy) const override {
+    return CreateCast(Instruction::PtrToInt, C, DestTy);
+  }
+
+  Instruction *CreateZExtOrBitCast(Constant *C, Type *DestTy) const override {
+    return CastInst::CreateZExtOrBitCast(C, DestTy);
+  }
+
+  Instruction *CreateSExtOrBitCast(Constant *C, Type *DestTy) const override {
+    return CastInst::CreateSExtOrBitCast(C, DestTy);
+  }
+
+  Instruction *CreateTruncOrBitCast(Constant *C, Type *DestTy) const override {
+    return CastInst::CreateTruncOrBitCast(C, DestTy);
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Compare Instructions
+  //===--------------------------------------------------------------------===//
+
+  Instruction *CreateICmp(CmpInst::Predicate P,
+                          Constant *LHS, Constant *RHS) const override {
+    return new ICmpInst(P, LHS, RHS);
+  }
+
+  Instruction *CreateFCmp(CmpInst::Predicate P,
+                          Constant *LHS, Constant *RHS) const override {
+    return new FCmpInst(P, LHS, RHS);
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Other Instructions
+  //===--------------------------------------------------------------------===//
+
+  Instruction *CreateSelect(Constant *C,
+                            Constant *True, Constant *False) const override {
+    return SelectInst::Create(C, True, False);
+  }
+
+  Instruction *CreateExtractElement(Constant *Vec,
+                                    Constant *Idx) const override {
+    return ExtractElementInst::Create(Vec, Idx);
+  }
+
+  Instruction *CreateInsertElement(Constant *Vec, Constant *NewElt,
+                                   Constant *Idx) const override {
+    return InsertElementInst::Create(Vec, NewElt, Idx);
+  }
+
+  Instruction *CreateShuffleVector(Constant *V1, Constant *V2,
+                                   ArrayRef<int> Mask) const override {
+    return new ShuffleVectorInst(V1, V2, Mask);
+  }
+
+  Instruction *CreateExtractValue(Constant *Agg,
+                                  ArrayRef<unsigned> IdxList) const override {
+    return ExtractValueInst::Create(Agg, IdxList);
+  }
+
+  Instruction *CreateInsertValue(Constant *Agg, Constant *Val,
+                                 ArrayRef<unsigned> IdxList) const override {
+    return InsertValueInst::Create(Agg, Val, IdxList);
+  }
+};
+
+} // end namespace llvm
+
+#endif // LLVM_IR_NOFOLDER_H
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif