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The attached patch fixes IRBuilder and the NoFolder class so that when NoFolder is used the instructions it generates are treated just like the ones IRBuilder creates directly (insert into block, assign them a name and debug info, as applicable). It does this by 1) having NoFolder return Instruction*s instead of Value*s, 2) having IRBuilder call Insert(Value, Name) on values obtained from the folder like it does on instructions it creates directly, and 3) adding an Insert(Constant*, const Twine& = "") overload which just returns the constant so that the other folders shouldn't have any extra overhead as long as inlining is enabled. While I was there, I also added some missing (CreateFNeg and various Create*Cast) methods to NoFolder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119614 91177308-0d34-0410-b5e6-96231b3b80d8
254 lines
9.4 KiB
C++
254 lines
9.4 KiB
C++
//======-- llvm/Support/NoFolder.h - Constant folding helper -*- 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 NoFolder class, a helper for IRBuilder. It provides
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// IRBuilder with a set of methods for creating unfolded constants. This is
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// useful for learners trying to understand how LLVM IR works, and who don't
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// want details to be hidden by the constant folder. For general constant
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// creation and folding, use ConstantExpr and the routines in
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// llvm/Analysis/ConstantFolding.h.
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//
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// Note: since it is not actually possible to create unfolded constants, this
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// class returns instructions rather than constants.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_NOFOLDER_H
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#define LLVM_SUPPORT_NOFOLDER_H
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#include "llvm/Constants.h"
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#include "llvm/Instructions.h"
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namespace llvm {
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class LLVMContext;
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/// NoFolder - Create "constants" (actually, instructions) with no folding.
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class NoFolder {
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public:
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explicit NoFolder(LLVMContext &) {}
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//===--------------------------------------------------------------------===//
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// Binary Operators
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//===--------------------------------------------------------------------===//
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Instruction *CreateAdd(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateAdd(LHS, RHS);
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}
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Instruction *CreateNSWAdd(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNSWAdd(LHS, RHS);
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}
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Instruction *CreateNUWAdd(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNUWAdd(LHS, RHS);
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}
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Instruction *CreateFAdd(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateFAdd(LHS, RHS);
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}
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Instruction *CreateSub(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateSub(LHS, RHS);
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}
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Instruction *CreateNSWSub(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNSWSub(LHS, RHS);
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}
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Instruction *CreateNUWSub(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNUWSub(LHS, RHS);
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}
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Instruction *CreateFSub(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateFSub(LHS, RHS);
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}
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Instruction *CreateMul(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateMul(LHS, RHS);
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}
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Instruction *CreateNSWMul(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNSWMul(LHS, RHS);
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}
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Instruction *CreateNUWMul(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateNUWMul(LHS, RHS);
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}
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Instruction *CreateFMul(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateFMul(LHS, RHS);
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}
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Instruction *CreateUDiv(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateUDiv(LHS, RHS);
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}
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Instruction *CreateSDiv(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateSDiv(LHS, RHS);
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}
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Instruction *CreateExactSDiv(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateExactSDiv(LHS, RHS);
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}
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Instruction *CreateFDiv(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateFDiv(LHS, RHS);
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}
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Instruction *CreateURem(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateURem(LHS, RHS);
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}
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Instruction *CreateSRem(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateSRem(LHS, RHS);
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}
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Instruction *CreateFRem(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateFRem(LHS, RHS);
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}
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Instruction *CreateShl(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateShl(LHS, RHS);
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}
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Instruction *CreateLShr(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateLShr(LHS, RHS);
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}
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Instruction *CreateAShr(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateAShr(LHS, RHS);
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}
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Instruction *CreateAnd(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateAnd(LHS, RHS);
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}
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Instruction *CreateOr(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateOr(LHS, RHS);
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}
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Instruction *CreateXor(Constant *LHS, Constant *RHS) const {
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return BinaryOperator::CreateXor(LHS, RHS);
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}
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Instruction *CreateBinOp(Instruction::BinaryOps Opc,
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Constant *LHS, Constant *RHS) const {
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return BinaryOperator::Create(Opc, LHS, RHS);
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}
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//===--------------------------------------------------------------------===//
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// Unary Operators
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//===--------------------------------------------------------------------===//
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Instruction *CreateNeg(Constant *C) const {
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return BinaryOperator::CreateNeg(C);
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}
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Instruction *CreateNSWNeg(Constant *C) const {
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return BinaryOperator::CreateNSWNeg(C);
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}
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Instruction *CreateNUWNeg(Constant *C) const {
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return BinaryOperator::CreateNUWNeg(C);
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}
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Instruction *CreateFNeg(Constant *C) const {
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return BinaryOperator::CreateFNeg(C);
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}
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Instruction *CreateNot(Constant *C) const {
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return BinaryOperator::CreateNot(C);
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}
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//===--------------------------------------------------------------------===//
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// Memory Instructions
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//===--------------------------------------------------------------------===//
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Constant *CreateGetElementPtr(Constant *C, Constant* const *IdxList,
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unsigned NumIdx) const {
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return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
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}
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Instruction *CreateGetElementPtr(Constant *C, Value* const *IdxList,
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unsigned NumIdx) const {
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return GetElementPtrInst::Create(C, IdxList, IdxList+NumIdx);
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}
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Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
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unsigned NumIdx) const {
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return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
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}
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Instruction *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
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unsigned NumIdx) const {
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return GetElementPtrInst::CreateInBounds(C, IdxList, IdxList+NumIdx);
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}
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//===--------------------------------------------------------------------===//
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// Cast/Conversion Operators
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//===--------------------------------------------------------------------===//
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Instruction *CreateCast(Instruction::CastOps Op, Constant *C,
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const Type *DestTy) const {
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return CastInst::Create(Op, C, DestTy);
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}
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Instruction *CreatePointerCast(Constant *C, const Type *DestTy) const {
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return CastInst::CreatePointerCast(C, DestTy);
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}
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Instruction *CreateIntCast(Constant *C, const Type *DestTy,
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bool isSigned) const {
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return CastInst::CreateIntegerCast(C, DestTy, isSigned);
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}
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Instruction *CreateFPCast(Constant *C, const Type *DestTy) const {
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return CastInst::CreateFPCast(C, DestTy);
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}
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Instruction *CreateBitCast(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::BitCast, C, DestTy);
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}
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Instruction *CreateIntToPtr(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::IntToPtr, C, DestTy);
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}
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Instruction *CreatePtrToInt(Constant *C, const Type *DestTy) const {
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return CreateCast(Instruction::PtrToInt, C, DestTy);
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}
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Instruction *CreateZExtOrBitCast(Constant *C, const Type *DestTy) const {
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return CastInst::CreateZExtOrBitCast(C, DestTy);
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}
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Instruction *CreateSExtOrBitCast(Constant *C, const Type *DestTy) const {
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return CastInst::CreateSExtOrBitCast(C, DestTy);
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}
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Instruction *CreateTruncOrBitCast(Constant *C, const Type *DestTy) const {
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return CastInst::CreateTruncOrBitCast(C, DestTy);
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}
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//===--------------------------------------------------------------------===//
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// Compare Instructions
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//===--------------------------------------------------------------------===//
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Instruction *CreateICmp(CmpInst::Predicate P,
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Constant *LHS, Constant *RHS) const {
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return new ICmpInst(P, LHS, RHS);
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}
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Instruction *CreateFCmp(CmpInst::Predicate P,
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Constant *LHS, Constant *RHS) const {
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return new FCmpInst(P, LHS, RHS);
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}
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//===--------------------------------------------------------------------===//
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// Other Instructions
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//===--------------------------------------------------------------------===//
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Instruction *CreateSelect(Constant *C,
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Constant *True, Constant *False) const {
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return SelectInst::Create(C, True, False);
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}
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Instruction *CreateExtractElement(Constant *Vec, Constant *Idx) const {
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return ExtractElementInst::Create(Vec, Idx);
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}
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Instruction *CreateInsertElement(Constant *Vec, Constant *NewElt,
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Constant *Idx) const {
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return InsertElementInst::Create(Vec, NewElt, Idx);
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}
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Instruction *CreateShuffleVector(Constant *V1, Constant *V2,
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Constant *Mask) const {
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return new ShuffleVectorInst(V1, V2, Mask);
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}
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Instruction *CreateExtractValue(Constant *Agg, const unsigned *IdxList,
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unsigned NumIdx) const {
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return ExtractValueInst::Create(Agg, IdxList, IdxList+NumIdx);
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}
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Instruction *CreateInsertValue(Constant *Agg, Constant *Val,
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const unsigned *IdxList,
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unsigned NumIdx) const {
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return InsertValueInst::Create(Agg, Val, IdxList, IdxList+NumIdx);
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}
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};
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}
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#endif
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