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https://github.com/c64scene-ar/llvm-6502.git
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debcb01b0f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77516 91177308-0d34-0410-b5e6-96231b3b80d8
127 lines
3.8 KiB
C++
127 lines
3.8 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/Metadata.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 ConstantInt::get(Ty, 0);
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case Type::FloatTyID:
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return ConstantFP::get(Ty->getContext(), APFloat(APInt(32, 0)));
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case Type::DoubleTyID:
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return ConstantFP::get(Ty->getContext(), APFloat(APInt(64, 0)));
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case Type::X86_FP80TyID:
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return ConstantFP::get(Ty->getContext(), APFloat(APInt(80, 2, zero)));
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case Type::FP128TyID:
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return ConstantFP::get(Ty->getContext(),
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APFloat(APInt(128, 2, zero), true));
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case Type::PPC_FP128TyID:
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return ConstantFP::get(Ty->getContext(), 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 ConstantInt::get(*this, 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>(ConstantVector::get(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::getTrue() {
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assert(this && "Context not initialized!");
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assert(pImpl && "Context not initialized!");
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return pImpl->getTrue();
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}
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ConstantInt* LLVMContext::getFalse() {
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assert(this && "Context not initialized!");
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assert(pImpl && "Context not initialized!");
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return pImpl->getFalse();
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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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// ConstantAggregateZero accessors.
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ConstantAggregateZero* LLVMContext::getConstantAggregateZero(const Type* Ty) {
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return pImpl->getConstantAggregateZero(Ty);
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}
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// MDNode accessors
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MDNode* LLVMContext::getMDNode(Value* const* Vals, unsigned NumVals) {
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return pImpl->getMDNode(Vals, NumVals);
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}
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// MDString accessors
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MDString* LLVMContext::getMDString(const StringRef &Str) {
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return pImpl->getMDString(Str.data(), Str.size());
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}
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void LLVMContext::erase(MDString *M) {
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pImpl->erase(M);
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}
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void LLVMContext::erase(MDNode *M) {
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pImpl->erase(M);
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}
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void LLVMContext::erase(ConstantAggregateZero *Z) {
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pImpl->erase(Z);
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}
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