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643 lines
21 KiB
C++
643 lines
21 KiB
C++
//===-- LLVMContext.cpp - Implement LLVMContext -----------------------===//
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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 implements LLVMContext, as a wrapper around the opaque
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// class LLVMContextImpl.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/LLVMContext.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Instruction.h"
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#include "llvm/MDNode.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "LLVMContextImpl.h"
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#include <cstdarg>
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using namespace llvm;
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static ManagedStatic<LLVMContext> GlobalContext;
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LLVMContext& llvm::getGlobalContext() {
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return *GlobalContext;
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}
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LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) { }
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LLVMContext::~LLVMContext() { delete pImpl; }
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// Constant accessors
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// Constructor to create a '0' constant of arbitrary type...
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static const uint64_t zero[2] = {0, 0};
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Constant* LLVMContext::getNullValue(const Type* Ty) {
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switch (Ty->getTypeID()) {
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case Type::IntegerTyID:
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return getConstantInt(Ty, 0);
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case Type::FloatTyID:
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return getConstantFP(APFloat(APInt(32, 0)));
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case Type::DoubleTyID:
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return getConstantFP(APFloat(APInt(64, 0)));
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case Type::X86_FP80TyID:
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return getConstantFP(APFloat(APInt(80, 2, zero)));
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case Type::FP128TyID:
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return getConstantFP(APFloat(APInt(128, 2, zero), true));
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case Type::PPC_FP128TyID:
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return getConstantFP(APFloat(APInt(128, 2, zero)));
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case Type::PointerTyID:
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return getConstantPointerNull(cast<PointerType>(Ty));
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case Type::StructTyID:
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case Type::ArrayTyID:
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case Type::VectorTyID:
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return getConstantAggregateZero(Ty);
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default:
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// Function, Label, or Opaque type?
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assert(!"Cannot create a null constant of that type!");
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return 0;
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}
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}
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Constant* LLVMContext::getAllOnesValue(const Type* Ty) {
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if (const IntegerType* ITy = dyn_cast<IntegerType>(Ty))
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return getConstantInt(APInt::getAllOnesValue(ITy->getBitWidth()));
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std::vector<Constant*> Elts;
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const VectorType* VTy = cast<VectorType>(Ty);
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Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType()));
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assert(Elts[0] && "Not a vector integer type!");
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return cast<ConstantVector>(getConstantVector(Elts));
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}
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// UndefValue accessors.
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UndefValue* LLVMContext::getUndef(const Type* Ty) {
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return UndefValue::get(Ty);
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}
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// ConstantInt accessors.
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ConstantInt* LLVMContext::getConstantIntTrue() {
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return ConstantInt::getTrue();
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}
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ConstantInt* LLVMContext::getConstantIntFalse() {
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return ConstantInt::getFalse();
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}
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Constant* LLVMContext::getConstantInt(const Type* Ty, uint64_t V,
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bool isSigned) {
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Constant *C = getConstantInt(cast<IntegerType>(Ty->getScalarType()),
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V, isSigned);
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// For vectors, broadcast the value.
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if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
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return
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getConstantVector(std::vector<Constant *>(VTy->getNumElements(), C));
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return C;
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}
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ConstantInt* LLVMContext::getConstantInt(const IntegerType* Ty, uint64_t V,
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bool isSigned) {
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return getConstantInt(APInt(Ty->getBitWidth(), V, isSigned));
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}
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ConstantInt* LLVMContext::getConstantIntSigned(const IntegerType* Ty,
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int64_t V) {
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return getConstantInt(Ty, V, true);
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}
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Constant *LLVMContext::getConstantIntSigned(const Type *Ty, int64_t V) {
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return getConstantInt(Ty, V, true);
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}
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ConstantInt* LLVMContext::getConstantInt(const APInt& V) {
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return pImpl->getConstantInt(V);
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}
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Constant* LLVMContext::getConstantInt(const Type* Ty, const APInt& V) {
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ConstantInt *C = getConstantInt(V);
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assert(C->getType() == Ty->getScalarType() &&
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"ConstantInt type doesn't match the type implied by its value!");
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// For vectors, broadcast the value.
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if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
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return
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getConstantVector(std::vector<Constant *>(VTy->getNumElements(), C));
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return C;
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}
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// ConstantPointerNull accessors.
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ConstantPointerNull* LLVMContext::getConstantPointerNull(const PointerType* T) {
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return ConstantPointerNull::get(T);
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}
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// ConstantStruct accessors.
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Constant* LLVMContext::getConstantStruct(const StructType* T,
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const std::vector<Constant*>& V) {
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return ConstantStruct::get(T, V);
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}
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Constant* LLVMContext::getConstantStruct(const std::vector<Constant*>& V,
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bool packed) {
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std::vector<const Type*> StructEls;
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StructEls.reserve(V.size());
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for (unsigned i = 0, e = V.size(); i != e; ++i)
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StructEls.push_back(V[i]->getType());
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return getConstantStruct(getStructType(StructEls, packed), V);
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}
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Constant* LLVMContext::getConstantStruct(Constant* const *Vals,
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unsigned NumVals, bool Packed) {
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// FIXME: make this the primary ctor method.
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return getConstantStruct(std::vector<Constant*>(Vals, Vals+NumVals), Packed);
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}
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// ConstantAggregateZero accessors.
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ConstantAggregateZero* LLVMContext::getConstantAggregateZero(const Type* Ty) {
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return ConstantAggregateZero::get(Ty);
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}
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// ConstantArray accessors.
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Constant* LLVMContext::getConstantArray(const ArrayType* T,
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const std::vector<Constant*>& V) {
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return ConstantArray::get(T, V);
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}
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Constant* LLVMContext::getConstantArray(const ArrayType* T,
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Constant* const* Vals,
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unsigned NumVals) {
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// FIXME: make this the primary ctor method.
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return getConstantArray(T, std::vector<Constant*>(Vals, Vals+NumVals));
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}
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/// ConstantArray::get(const string&) - Return an array that is initialized to
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/// contain the specified string. If length is zero then a null terminator is
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/// added to the specified string so that it may be used in a natural way.
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/// Otherwise, the length parameter specifies how much of the string to use
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/// and it won't be null terminated.
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///
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Constant* LLVMContext::getConstantArray(const std::string& Str,
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bool AddNull) {
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std::vector<Constant*> ElementVals;
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for (unsigned i = 0; i < Str.length(); ++i)
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ElementVals.push_back(getConstantInt(Type::Int8Ty, Str[i]));
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// Add a null terminator to the string...
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if (AddNull) {
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ElementVals.push_back(getConstantInt(Type::Int8Ty, 0));
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}
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ArrayType *ATy = getArrayType(Type::Int8Ty, ElementVals.size());
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return getConstantArray(ATy, ElementVals);
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}
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// ConstantExpr accessors.
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Constant* LLVMContext::getConstantExpr(unsigned Opcode, Constant* C1,
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Constant* C2) {
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return ConstantExpr::get(Opcode, C1, C2);
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}
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Constant* LLVMContext::getConstantExprTrunc(Constant* C, const Type* Ty) {
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return ConstantExpr::getTrunc(C, Ty);
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}
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Constant* LLVMContext::getConstantExprSExt(Constant* C, const Type* Ty) {
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return ConstantExpr::getSExt(C, Ty);
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}
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Constant* LLVMContext::getConstantExprZExt(Constant* C, const Type* Ty) {
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return ConstantExpr::getZExt(C, Ty);
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}
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Constant* LLVMContext::getConstantExprFPTrunc(Constant* C, const Type* Ty) {
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return ConstantExpr::getFPTrunc(C, Ty);
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}
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Constant* LLVMContext::getConstantExprFPExtend(Constant* C, const Type* Ty) {
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return ConstantExpr::getFPExtend(C, Ty);
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}
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Constant* LLVMContext::getConstantExprUIToFP(Constant* C, const Type* Ty) {
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return ConstantExpr::getUIToFP(C, Ty);
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}
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Constant* LLVMContext::getConstantExprSIToFP(Constant* C, const Type* Ty) {
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return ConstantExpr::getSIToFP(C, Ty);
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}
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Constant* LLVMContext::getConstantExprFPToUI(Constant* C, const Type* Ty) {
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return ConstantExpr::getFPToUI(C, Ty);
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}
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Constant* LLVMContext::getConstantExprFPToSI(Constant* C, const Type* Ty) {
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return ConstantExpr::getFPToSI(C, Ty);
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}
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Constant* LLVMContext::getConstantExprPtrToInt(Constant* C, const Type* Ty) {
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return ConstantExpr::getPtrToInt(C, Ty);
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}
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Constant* LLVMContext::getConstantExprIntToPtr(Constant* C, const Type* Ty) {
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return ConstantExpr::getIntToPtr(C, Ty);
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}
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Constant* LLVMContext::getConstantExprBitCast(Constant* C, const Type* Ty) {
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return ConstantExpr::getBitCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprCast(unsigned ops, Constant* C,
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const Type* Ty) {
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return ConstantExpr::getCast(ops, C, Ty);
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}
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Constant* LLVMContext::getConstantExprZExtOrBitCast(Constant* C,
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const Type* Ty) {
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return ConstantExpr::getZExtOrBitCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprSExtOrBitCast(Constant* C,
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const Type* Ty) {
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return ConstantExpr::getSExtOrBitCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprTruncOrBitCast(Constant* C,
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const Type* Ty) {
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return ConstantExpr::getTruncOrBitCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprPointerCast(Constant* C, const Type* Ty) {
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return ConstantExpr::getPointerCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprIntegerCast(Constant* C, const Type* Ty,
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bool isSigned) {
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return ConstantExpr::getIntegerCast(C, Ty, isSigned);
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}
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Constant* LLVMContext::getConstantExprFPCast(Constant* C, const Type* Ty) {
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return ConstantExpr::getFPCast(C, Ty);
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}
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Constant* LLVMContext::getConstantExprSelect(Constant* C, Constant* V1,
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Constant* V2) {
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return ConstantExpr::getSelect(C, V1, V2);
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}
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Constant* LLVMContext::getConstantExprAlignOf(const Type* Ty) {
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// alignof is implemented as: (i64) gep ({i8,Ty}*)null, 0, 1
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const Type *AligningTy = getStructType(Type::Int8Ty, Ty, NULL);
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Constant *NullPtr = getNullValue(AligningTy->getPointerTo());
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Constant *Zero = getConstantInt(Type::Int32Ty, 0);
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Constant *One = getConstantInt(Type::Int32Ty, 1);
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Constant *Indices[2] = { Zero, One };
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Constant *GEP = getConstantExprGetElementPtr(NullPtr, Indices, 2);
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return getConstantExprCast(Instruction::PtrToInt, GEP, Type::Int32Ty);
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}
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Constant* LLVMContext::getConstantExprCompare(unsigned short pred,
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Constant* C1, Constant* C2) {
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return ConstantExpr::getCompare(pred, C1, C2);
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}
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Constant* LLVMContext::getConstantExprNeg(Constant* C) {
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// API compatibility: Adjust integer opcodes to floating-point opcodes.
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if (C->getType()->isFPOrFPVector())
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return getConstantExprFNeg(C);
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assert(C->getType()->isIntOrIntVector() &&
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"Cannot NEG a nonintegral value!");
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return getConstantExpr(Instruction::Sub,
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getZeroValueForNegation(C->getType()),
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C);
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}
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Constant* LLVMContext::getConstantExprFNeg(Constant* C) {
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assert(C->getType()->isFPOrFPVector() &&
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"Cannot FNEG a non-floating-point value!");
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return getConstantExpr(Instruction::FSub,
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getZeroValueForNegation(C->getType()),
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C);
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}
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Constant* LLVMContext::getConstantExprNot(Constant* C) {
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assert(C->getType()->isIntOrIntVector() &&
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"Cannot NOT a nonintegral value!");
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return getConstantExpr(Instruction::Xor, C, getAllOnesValue(C->getType()));
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}
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Constant* LLVMContext::getConstantExprAdd(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Add, C1, C2);
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}
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Constant* LLVMContext::getConstantExprFAdd(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::FAdd, C1, C2);
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}
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Constant* LLVMContext::getConstantExprSub(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Sub, C1, C2);
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}
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Constant* LLVMContext::getConstantExprFSub(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::FSub, C1, C2);
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}
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Constant* LLVMContext::getConstantExprMul(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Mul, C1, C2);
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}
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Constant* LLVMContext::getConstantExprFMul(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::FMul, C1, C2);
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}
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Constant* LLVMContext::getConstantExprUDiv(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::UDiv, C1, C2);
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}
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Constant* LLVMContext::getConstantExprSDiv(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::SDiv, C1, C2);
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}
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Constant* LLVMContext::getConstantExprFDiv(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::FDiv, C1, C2);
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}
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Constant* LLVMContext::getConstantExprURem(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::URem, C1, C2);
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}
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Constant* LLVMContext::getConstantExprSRem(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::SRem, C1, C2);
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}
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Constant* LLVMContext::getConstantExprFRem(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::FRem, C1, C2);
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}
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Constant* LLVMContext::getConstantExprAnd(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::And, C1, C2);
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}
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Constant* LLVMContext::getConstantExprOr(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Or, C1, C2);
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}
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Constant* LLVMContext::getConstantExprXor(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Xor, C1, C2);
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}
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Constant* LLVMContext::getConstantExprICmp(unsigned short pred, Constant* LHS,
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Constant* RHS) {
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return ConstantExpr::getICmp(pred, LHS, RHS);
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}
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Constant* LLVMContext::getConstantExprFCmp(unsigned short pred, Constant* LHS,
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Constant* RHS) {
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return ConstantExpr::getFCmp(pred, LHS, RHS);
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}
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Constant* LLVMContext::getConstantExprShl(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::Shl, C1, C2);
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}
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Constant* LLVMContext::getConstantExprLShr(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::LShr, C1, C2);
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}
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Constant* LLVMContext::getConstantExprAShr(Constant* C1, Constant* C2) {
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return getConstantExpr(Instruction::AShr, C1, C2);
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}
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Constant* LLVMContext::getConstantExprGetElementPtr(Constant* C,
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Constant* const* IdxList,
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unsigned NumIdx) {
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return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
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}
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Constant* LLVMContext::getConstantExprGetElementPtr(Constant* C,
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Value* const* IdxList,
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unsigned NumIdx) {
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return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
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}
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Constant* LLVMContext::getConstantExprExtractElement(Constant* Vec,
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Constant* Idx) {
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return ConstantExpr::getExtractElement(Vec, Idx);
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}
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Constant* LLVMContext::getConstantExprInsertElement(Constant* Vec,
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Constant* Elt,
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Constant* Idx) {
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return ConstantExpr::getInsertElement(Vec, Elt, Idx);
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}
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Constant* LLVMContext::getConstantExprShuffleVector(Constant* V1, Constant* V2,
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Constant* Mask) {
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return ConstantExpr::getShuffleVector(V1, V2, Mask);
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}
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Constant* LLVMContext::getConstantExprExtractValue(Constant* Agg,
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const unsigned* IdxList,
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unsigned NumIdx) {
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return ConstantExpr::getExtractValue(Agg, IdxList, NumIdx);
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}
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Constant* LLVMContext::getConstantExprInsertValue(Constant* Agg, Constant* Val,
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const unsigned* IdxList,
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unsigned NumIdx) {
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return ConstantExpr::getInsertValue(Agg, Val, IdxList, NumIdx);
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}
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Constant* LLVMContext::getConstantExprSizeOf(const Type* Ty) {
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// sizeof is implemented as: (i64) gep (Ty*)null, 1
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Constant *GEPIdx = getConstantInt(Type::Int32Ty, 1);
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Constant *GEP = getConstantExprGetElementPtr(
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getNullValue(getPointerTypeUnqual(Ty)), &GEPIdx, 1);
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return getConstantExprCast(Instruction::PtrToInt, GEP, Type::Int64Ty);
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}
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Constant* LLVMContext::getZeroValueForNegation(const Type* Ty) {
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if (const VectorType *PTy = dyn_cast<VectorType>(Ty))
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if (PTy->getElementType()->isFloatingPoint()) {
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std::vector<Constant*> zeros(PTy->getNumElements(),
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getConstantFPNegativeZero(PTy->getElementType()));
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return getConstantVector(PTy, zeros);
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}
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if (Ty->isFloatingPoint())
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return getConstantFPNegativeZero(Ty);
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return getNullValue(Ty);
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}
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// ConstantFP accessors.
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ConstantFP* LLVMContext::getConstantFP(const APFloat& V) {
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return pImpl->getConstantFP(V);
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}
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static const fltSemantics *TypeToFloatSemantics(const Type *Ty) {
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if (Ty == Type::FloatTy)
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return &APFloat::IEEEsingle;
|
|
if (Ty == Type::DoubleTy)
|
|
return &APFloat::IEEEdouble;
|
|
if (Ty == Type::X86_FP80Ty)
|
|
return &APFloat::x87DoubleExtended;
|
|
else if (Ty == Type::FP128Ty)
|
|
return &APFloat::IEEEquad;
|
|
|
|
assert(Ty == Type::PPC_FP128Ty && "Unknown FP format");
|
|
return &APFloat::PPCDoubleDouble;
|
|
}
|
|
|
|
/// get() - This returns a constant fp for the specified value in the
|
|
/// specified type. This should only be used for simple constant values like
|
|
/// 2.0/1.0 etc, that are known-valid both as double and as the target format.
|
|
Constant* LLVMContext::getConstantFP(const Type* Ty, double V) {
|
|
APFloat FV(V);
|
|
bool ignored;
|
|
FV.convert(*TypeToFloatSemantics(Ty->getScalarType()),
|
|
APFloat::rmNearestTiesToEven, &ignored);
|
|
Constant *C = getConstantFP(FV);
|
|
|
|
// For vectors, broadcast the value.
|
|
if (const VectorType *VTy = dyn_cast<VectorType>(Ty))
|
|
return
|
|
getConstantVector(std::vector<Constant *>(VTy->getNumElements(), C));
|
|
|
|
return C;
|
|
}
|
|
|
|
ConstantFP* LLVMContext::getConstantFPNegativeZero(const Type* Ty) {
|
|
APFloat apf = cast <ConstantFP>(getNullValue(Ty))->getValueAPF();
|
|
apf.changeSign();
|
|
return getConstantFP(apf);
|
|
}
|
|
|
|
|
|
// ConstantVector accessors.
|
|
Constant* LLVMContext::getConstantVector(const VectorType* T,
|
|
const std::vector<Constant*>& V) {
|
|
return ConstantVector::get(T, V);
|
|
}
|
|
|
|
Constant* LLVMContext::getConstantVector(const std::vector<Constant*>& V) {
|
|
assert(!V.empty() && "Cannot infer type if V is empty");
|
|
return getConstantVector(getVectorType(V.front()->getType(),V.size()), V);
|
|
}
|
|
|
|
Constant* LLVMContext::getConstantVector(Constant* const* Vals,
|
|
unsigned NumVals) {
|
|
// FIXME: make this the primary ctor method.
|
|
return getConstantVector(std::vector<Constant*>(Vals, Vals+NumVals));
|
|
}
|
|
|
|
// MDNode accessors
|
|
MDNode* LLVMContext::getMDNode(Value* const* Vals, unsigned NumVals) {
|
|
return MDNode::get(Vals, NumVals);
|
|
}
|
|
|
|
// MDString accessors
|
|
MDString* LLVMContext::getMDString(const char *StrBegin, const char *StrEnd) {
|
|
return pImpl->getMDString(StrBegin, StrEnd);
|
|
}
|
|
|
|
MDString* LLVMContext::getMDString(const std::string &Str) {
|
|
return getMDString(Str.data(), Str.data()+Str.size());
|
|
}
|
|
|
|
// FunctionType accessors
|
|
FunctionType* LLVMContext::getFunctionType(const Type* Result, bool isVarArg) {
|
|
return FunctionType::get(Result, isVarArg);
|
|
}
|
|
|
|
FunctionType* LLVMContext::getFunctionType(const Type* Result,
|
|
const std::vector<const Type*>& Params,
|
|
bool isVarArg) {
|
|
return FunctionType::get(Result, Params, isVarArg);
|
|
}
|
|
|
|
// IntegerType accessors
|
|
const IntegerType* LLVMContext::getIntegerType(unsigned NumBits) {
|
|
return IntegerType::get(NumBits);
|
|
}
|
|
|
|
// OpaqueType accessors
|
|
OpaqueType* LLVMContext::getOpaqueType() {
|
|
return OpaqueType::get();
|
|
}
|
|
|
|
// StructType accessors
|
|
StructType* LLVMContext::getStructType(bool isPacked) {
|
|
return StructType::get(isPacked);
|
|
}
|
|
|
|
StructType* LLVMContext::getStructType(const std::vector<const Type*>& Params,
|
|
bool isPacked) {
|
|
return StructType::get(Params, isPacked);
|
|
}
|
|
|
|
StructType *LLVMContext::getStructType(const Type *type, ...) {
|
|
va_list ap;
|
|
std::vector<const llvm::Type*> StructFields;
|
|
va_start(ap, type);
|
|
while (type) {
|
|
StructFields.push_back(type);
|
|
type = va_arg(ap, llvm::Type*);
|
|
}
|
|
return StructType::get(StructFields);
|
|
}
|
|
|
|
// ArrayType accessors
|
|
ArrayType* LLVMContext::getArrayType(const Type* ElementType,
|
|
uint64_t NumElements) {
|
|
return ArrayType::get(ElementType, NumElements);
|
|
}
|
|
|
|
// PointerType accessors
|
|
PointerType* LLVMContext::getPointerType(const Type* ElementType,
|
|
unsigned AddressSpace) {
|
|
return PointerType::get(ElementType, AddressSpace);
|
|
}
|
|
|
|
PointerType* LLVMContext::getPointerTypeUnqual(const Type* ElementType) {
|
|
return PointerType::getUnqual(ElementType);
|
|
}
|
|
|
|
// VectorType accessors
|
|
VectorType* LLVMContext::getVectorType(const Type* ElementType,
|
|
unsigned NumElements) {
|
|
return VectorType::get(ElementType, NumElements);
|
|
}
|
|
|
|
VectorType* LLVMContext::getVectorTypeInteger(const VectorType* VTy) {
|
|
return VectorType::getInteger(VTy);
|
|
}
|
|
|
|
VectorType* LLVMContext::getVectorTypeExtendedElement(const VectorType* VTy) {
|
|
return VectorType::getExtendedElementVectorType(VTy);
|
|
}
|
|
|
|
VectorType* LLVMContext::getVectorTypeTruncatedElement(const VectorType* VTy) {
|
|
return VectorType::getTruncatedElementVectorType(VTy);
|
|
}
|
|
|
|
const Type* LLVMContext::makeCmpResultType(const Type* opnd_type) {
|
|
if (const VectorType* vt = dyn_cast<const VectorType>(opnd_type)) {
|
|
return getVectorType(Type::Int1Ty, vt->getNumElements());
|
|
}
|
|
return Type::Int1Ty;
|
|
}
|
|
|
|
void LLVMContext::erase(MDString *M) {
|
|
pImpl->erase(M);
|
|
} |