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types.cpp
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types.cpp
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#include "types.h"
#include "expr.h"
#include "runtime/runtime.h"
#include "schema.h"
#include "trace.h"
#include <climits>
#include <llvm/IR/LLVMContext.h>
#include <sstream>
extern llvm::Module* theModule;
namespace Types
{
static std::vector<std::pair<TypeDecl*, llvm::TrackingMDRef>> fwdMap;
size_t TypeDecl::Size() const
{
const llvm::DataLayout& dl = theModule->getDataLayout();
return dl.getTypeAllocSize(LlvmType());
}
size_t TypeDecl::AlignSize() const
{
const llvm::DataLayout& dl = theModule->getDataLayout();
return dl.getPrefTypeAlign(LlvmType()).value();
}
Range* TypeDecl::GetRange() const
{
ICE_IF(!IsIntegral(this), "Expected integral type for GetRange");
switch (kind)
{
case TK_Char:
return new Range(0, UCHAR_MAX);
case TK_Integer:
return new Range(INT_MIN, INT_MAX);
default:
ICE("Range on unsupported type");
}
}
const TypeDecl* TypeDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty))
{
return this;
}
return 0;
}
void TypeDecl::dump() const
{
DoDump();
std::cerr << std::endl;
}
llvm::Type* TypeDecl::LlvmType() const
{
if (!lType)
{
lType = GetLlvmType();
}
return lType;
}
llvm::DIType* TypeDecl::DebugType(llvm::DIBuilder* builder) const
{
if (!diType)
{
diType = GetDIType(builder);
}
return diType;
}
void CharDecl::DoDump() const
{
std::cerr << "Type: Char";
}
llvm::Type* CharDecl::GetLlvmType() const
{
return llvm::Type::getInt8Ty(theContext);
}
llvm::DIType* CharDecl::GetDIType(llvm::DIBuilder* builder) const
{
return builder->createBasicType("CHAR", 8, llvm::dwarf::DW_ATE_unsigned_char);
}
const TypeDecl* CharDecl::CompatibleType(const TypeDecl* ty) const
{
if (*this == *ty || ty->Type() == TK_String)
{
return this;
}
return 0;
}
const TypeDecl* CharDecl::AssignableType(const TypeDecl* ty) const
{
if (*this == *ty)
{
return this;
}
return 0;
}
template<>
const TypeDecl* IntegerDecl::CompatibleType(const TypeDecl* ty) const
{
if (ty->Type() == TK_Integer)
{
return this;
}
if (ty->Type() == TK_LongInt || ty->Type() == TK_Real || ty->Type() == TK_Complex)
{
return ty;
}
return 0;
}
template<>
const TypeDecl* IntegerDecl::AssignableType(const TypeDecl* ty) const
{
if (SameAs(ty))
{
return ty;
}
return 0;
}
template<>
const TypeDecl* Int64Decl::CompatibleType(const TypeDecl* ty) const
{
if (ty->Type() == TK_LongInt || ty->Type() == TK_Integer)
{
return this;
}
if (ty->Type() == TK_Real)
{
return ty;
}
if (ty->Type() == TK_Complex)
{
return ty;
}
return 0;
}
template<>
const TypeDecl* Int64Decl::AssignableType(const TypeDecl* ty) const
{
if (SameAs(ty) || ty->Type() == TK_Integer)
{
return this;
}
return 0;
}
void RealDecl::DoDump() const
{
std::cerr << "Type: Real";
}
llvm::Type* RealDecl::GetLlvmType() const
{
return llvm::Type::getDoubleTy(theContext);
}
llvm::DIType* RealDecl::GetDIType(llvm::DIBuilder* builder) const
{
return builder->createBasicType("REAL", 64, llvm::dwarf::DW_ATE_float);
}
const TypeDecl* RealDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty) || ty->Type() == TK_LongInt || ty->Type() == TK_Integer)
{
return this;
}
if (ty->Type() == TK_Complex)
{
return ty;
}
return 0;
}
const TypeDecl* ComplexDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty) || IsNumeric(ty))
{
return this;
}
return 0;
}
const TypeDecl* RealDecl::AssignableType(const TypeDecl* ty) const
{
return CompatibleType(ty);
}
void VoidDecl::DoDump() const
{
std::cerr << "Void";
}
llvm::Type* VoidDecl::GetLlvmType() const
{
return llvm::Type::getVoidTy(theContext);
}
void BoolDecl::DoDump() const
{
std::cerr << "Type: Bool";
}
llvm::Type* BoolDecl::GetLlvmType() const
{
return llvm::Type::getInt1Ty(theContext);
}
llvm::DIType* BoolDecl::GetDIType(llvm::DIBuilder* builder) const
{
return builder->createBasicType("BOOLEAN", 1, llvm::dwarf::DW_ATE_boolean);
}
void PointerDecl::DoDump() const
{
std::cerr << "Pointer to: " << name;
if (baseType)
{
std::cerr << " type " << baseType;
}
else
{
std::cerr << " (forward declared)";
}
}
TypeDecl* PointerDecl::Clone() const
{
if (auto fwd = llvm::dyn_cast<ForwardDecl>(baseType))
{
return new PointerDecl(fwd);
}
ICE_IF(forward, "Shouldn't be forward declared pointer here");
return new PointerDecl(SubType());
}
const TypeDecl* PointerDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty))
{
return this;
}
if (auto ptrTy = llvm::dyn_cast<PointerDecl>(ty))
{
if (baseType->SameAs(ptrTy->baseType))
{
return this;
}
if (auto classTy = llvm::dyn_cast<ClassDecl>(ptrTy->baseType))
{
if (auto thisClassTy = llvm::dyn_cast<ClassDecl>(baseType))
{
if (classTy->DerivedFrom(thisClassTy))
{
return this;
}
}
}
}
return 0;
}
bool CompoundDecl::classof(const TypeDecl* e)
{
switch (e->getKind())
{
case TK_Array:
case TK_String:
case TK_Pointer:
case TK_Field:
case TK_FuncPtr:
case TK_File:
case TK_Text:
case TK_Set:
return true;
default:
break;
}
return false;
}
bool CompoundDecl::SameAs(const TypeDecl* ty) const
{
if (this == ty)
{
return true;
}
// Both need to be pointers!
if (Type() != ty->Type())
{
return false;
}
const auto cty = llvm::dyn_cast<CompoundDecl>(ty);
return cty && *cty->SubType() == *baseType;
}
llvm::Type* PointerDecl::GetLlvmType() const
{
return llvm::PointerType::getUnqual(baseType->LlvmType());
}
llvm::DIType* PointerDecl::GetDIType(llvm::DIBuilder* builder) const
{
llvm::DIType* pointeeType = baseType->DebugType(builder);
if (!pointeeType)
{
return 0;
}
uint64_t size = Size() * CHAR_BIT;
uint64_t align = AlignSize() * CHAR_BIT;
return builder->createPointerType(pointeeType, size, align);
}
void ArrayDecl::DoDump() const
{
std::cerr << "Array ";
for (auto r : ranges)
{
r->DoDump();
}
std::cerr << " of ";
baseType->DoDump();
}
llvm::Type* ArrayDecl::GetLlvmType() const
{
ICE_IF(!ranges.size(), "Expect ranges to contain something");
size_t nelems = 1;
for (auto r : ranges)
{
ICE_IF(!r->GetRange()->Size(), "Expectig range to have a non-zero size!");
nelems *= r->GetRange()->Size();
}
llvm::Type* ty = baseType->LlvmType();
ICE_IF(!nelems, "Expect number of elements to be non-zero!");
ICE_IF(!ty, "Expected to get a type back!");
return llvm::ArrayType::get(ty, nelems);
}
llvm::DIType* ArrayDecl::GetDIType(llvm::DIBuilder* builder) const
{
std::vector<llvm::Metadata*> subscripts;
for (auto r : ranges)
{
Range* rr = r->GetRange();
subscripts.push_back(builder->getOrCreateSubrange(rr->Start(), rr->End()));
}
llvm::DIType* bd = baseType->DebugType(builder);
if (!bd)
{
return 0;
}
llvm::DINodeArray subsArray = builder->getOrCreateArray(subscripts);
return builder->createArrayType(baseType->Size() * CHAR_BIT, baseType->AlignSize() * CHAR_BIT, bd,
subsArray);
}
bool ArrayDecl::SameAs(const TypeDecl* ty) const
{
if (CompoundDecl::SameAs(ty))
{
if (const auto aty = llvm::dyn_cast<ArrayDecl>(ty))
{
if (ranges.size() != aty->Ranges().size())
{
return false;
}
for (size_t i = 0; i < ranges.size(); i++)
{
if (*ranges[i] != *aty->Ranges()[i])
{
return false;
}
}
return true;
}
}
return false;
}
const TypeDecl* ArrayDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty))
{
return this;
}
if (const auto aty = llvm::dyn_cast<ArrayDecl>(ty))
{
if (aty->SubType() == SubType() && ranges.size() == aty->Ranges().size())
{
for (size_t i = 0; i < ranges.size(); i++)
{
if (ranges[i]->Size() != aty->Ranges()[i]->Size())
{
return 0;
}
}
}
}
return this;
}
TypeDecl* ArrayDecl::Clone() const
{
return new Types::ArrayDecl(baseType, ranges);
}
llvm::Type* DynArrayDecl::GetArrayType(TypeDecl* baseType)
{
static llvm::Type* dynTy = 0;
if (!dynTy)
{
llvm::Type* ty = baseType->LlvmType();
llvm::Type* ptrTy = llvm::PointerType::getUnqual(ty);
llvm::Type* intTy = Get<IntegerDecl>()->LlvmType();
dynTy = llvm::StructType::create({ ptrTy, intTy, intTy }, "confArray");
}
return dynTy;
}
llvm::Type* DynArrayDecl::GetLlvmType() const
{
return GetArrayType(baseType);
}
void DynArrayDecl::DoDump() const
{
std::cerr << "Array ";
range->DoDump();
std::cerr << " of ";
baseType->DoDump();
}
const TypeDecl* DynArrayDecl::CompatibleType(const TypeDecl* ty) const
{
if (SameAs(ty))
{
return this;
}
if (const auto aty = llvm::dyn_cast<ArrayDecl>(ty))
{
if (aty->SubType() != SubType() || aty->Ranges().size() != 1)
{
return 0;
}
return aty;
}
return 0;
}
void Range::DoDump() const
{
std::cerr << "[" << start << ".." << end << "]";
}
void RangeDecl::DoDump() const
{
std::cerr << "RangeDecl: ";
baseType->DoDump();
std::cerr << " ";
range->DoDump();
}
bool RangeDecl::SameAs(const TypeDecl* ty) const
{
if (const auto rty = llvm::dyn_cast<RangeDecl>(ty))
{
return rty->Type() == Type() && *range == *rty->range;
}
return Type() == ty->Type();
}
const TypeDecl* RangeBaseDecl::CompatibleType(const TypeDecl* ty) const
{
if (*this == *ty)
{
return this;
}
if (ty->Type() == Type())
{
return ty;
}
return 0;
}
const TypeDecl* RangeBaseDecl::AssignableType(const TypeDecl* ty) const
{
if (SameAs(ty) || ty->Type() == Type())
{
return ty;
}
return 0;
}
void DynRangeDecl::DoDump() const
{
std::cerr << "DynRangeDecl: ";
baseType->DoDump();
std::cerr << "[" << lowName << ".." << highName << "]";
}
void EnumDecl::SetValues(const std::vector<std::string>& nmv)
{
unsigned int v = 0;
for (auto n : nmv)
{
values.push_back(EnumValue(n, v));
v++;
}
}
void EnumDecl::DoDump() const
{
std::cerr << "EnumDecl:";
for (auto v : values)
{
std::cerr << " " << v.name << ": " << v.value;
}
}
bool EnumDecl::SameAs(const TypeDecl* ty) const
{
if (const auto ety = llvm::dyn_cast<EnumDecl>(ty))
{
if (ety->Type() != Type() || values.size() != ety->values.size())
{
return false;
}
for (size_t i = 0; i < values.size(); i++)
{
if (values[i] != ety->values[i])
{
return false;
}
}
}
else
{
return false;
}
return true;
}
llvm::DIType* EnumDecl::GetDIType(llvm::DIBuilder* builder) const
{
const int size = 32;
const int align = 32;
std::vector<llvm::Metadata*> enumerators;
for (const auto& i : values)
{
enumerators.push_back(builder->createEnumerator(i.name, i.value));
}
llvm::DINodeArray eltArray = builder->getOrCreateArray(enumerators);
int line = 0;
return builder->createEnumerationType(0, "", 0, line, size, align, eltArray, 0);
}
FunctionDecl::FunctionDecl(PrototypeAST* p) : CompoundDecl(TK_Function, p->Type()), proto(p) {}
void FunctionDecl::DoDump() const
{
std::cerr << "Function " << baseType;
}
void FieldDecl::DoDump() const
{
std::cerr << "Field " << name << ": ";
baseType->DoDump();
}
void VariantDecl::DoDump() const
{
std::cerr << "Variant ";
for (auto f : fields)
{
f->DoDump();
std::cerr << std::endl;
}
}
llvm::Type* VariantDecl::GetLlvmType() const
{
const llvm::DataLayout& dl = theModule->getDataLayout();
size_t maxSize = 0;
size_t maxSizeElt = 0;
size_t maxAlign = 0;
size_t maxAlignElt = 0;
size_t maxAlignSize = 0;
size_t elt = 0;
for (auto f : fields)
{
llvm::Type* ty = f->LlvmType();
if (auto pf = llvm::dyn_cast<PointerDecl>(f->SubType()))
{
if (pf->IsIncomplete())
{
if (!opaqueType)
{
opaqueType = llvm::StructType::create(theContext, name);
}
return opaqueType;
}
}
size_t sz = dl.getTypeAllocSize(ty);
size_t al = dl.getPrefTypeAlign(ty).value();
if (sz > maxSize)
{
maxSize = sz;
maxSizeElt = elt;
}
if (al > maxAlign || (al == maxAlign && sz > maxAlignSize))
{
maxAlign = al;
maxAlignSize = sz;
maxAlignElt = elt;
}
elt++;
}
llvm::Type* ty = fields[maxAlignElt]->LlvmType();
std::vector<llvm::Type*> fv = { ty };
if (maxAlignElt != maxSizeElt)
{
size_t nelems = maxSize - maxAlignSize;
llvm::Type* ty = llvm::ArrayType::get(Get<CharDecl>()->LlvmType(), nelems);
fv.push_back(ty);
}
return llvm::StructType::create(fv, name);
}
llvm::DIType* VariantDecl::GetDIType(llvm::DIBuilder* builder) const
{
// TODO: Fill in.
return 0;
}
void FieldCollection::EnsureSized() const
{
if (opaqueType && opaqueType->isOpaque())
{
[[maybe_unused]] llvm::Type* ty = GetLlvmType();
ICE_IF(ty != opaqueType, "Expect opaqueType to be returned");
ICE_IF(opaqueType->isOpaque(), "Expect opaqueness to have gone away");
}
}
// This is a very basic algorithm, but I think it's good enough for
// most structures - there's unlikely to be a HUGE number of them.
int FieldCollection::Element(const std::string& name) const
{
int i = 0;
for (auto f : fields)
{
// Check for special record type
if (f->Name() == "")
{
auto rd = llvm::dyn_cast<RecordDecl>(f->SubType());
ICE_IF(!rd, "Expected record declarataion here!");
if (rd->Element(name) >= 0)
{
return i;
}
}
if (f->Name() == name)
{
return i;
}
i++;
}
return -1;
}
bool FieldCollection::SameAs(const TypeDecl* ty) const
{
if (Type() != ty->Type())
{
return false;
}
if (const auto fty = llvm::dyn_cast<FieldCollection>(ty))
{
if (fields.size() != fty->fields.size())
{
return false;
}
for (size_t i = 0; i < fields.size(); i++)
{
if (fields[i] != fty->fields[i])
{
return false;
}
}
return true;
}
return false;
}
size_t RecordDecl::Size() const
{
EnsureSized();
return TypeDecl::Size();
}
void RecordDecl::DoDump() const
{
std::cerr << "Record ";
for (auto f : fields)
{
f->DoDump();
std::cerr << std::endl;
}
if (variant)
{
variant->DoDump();
}
}
llvm::Type* RecordDecl::GetLlvmType() const
{
if (clonedFrom)
{
return clonedFrom->LlvmType();
}
std::vector<llvm::Type*> fv;
for (auto f : fields)
{
if (auto pf = llvm::dyn_cast_or_null<PointerDecl>(f->SubType()))
{
if (pf->IsIncomplete() || !HasLlvmType(f))
{
if (!opaqueType)
{
opaqueType = llvm::StructType::create(theContext, name);
}
return opaqueType;
}
}
fv.push_back(f->LlvmType());
}
if (variant)
{
fv.push_back(variant->LlvmType());
}
if (opaqueType)
{
opaqueType->setBody(fv);
return opaqueType;
}
if (fv.empty())
{
fv.push_back(llvm::Type::getInt8Ty(theContext));
}
return llvm::StructType::create(fv, name);
}
llvm::DIType* RecordDecl::GetDIType(llvm::DIBuilder* builder) const
{
std::vector<llvm::Metadata*> eltTys;
// TODO: Add unit and name (if available).
llvm::DIScope* scope = 0;
llvm::DIFile* unit = 0;
int lineNo = 0;
int index = 0;
llvm::StructType* st = llvm::cast<llvm::StructType>(LlvmType());
const llvm::DataLayout& dl = theModule->getDataLayout();
const llvm::StructLayout* sl = 0;
if (!st->isOpaque())
{
sl = dl.getStructLayout(st);
}
// TODO: Need to deal with recursive types here...
for (auto f : fields)
{
llvm::DIType* d = 0;
size_t size = 0;
size_t align = 0;
if (auto pf = llvm::dyn_cast<PointerDecl>(f->SubType()))
{
if (pf->IsForward() && !pf->DiType())
{
std::string fullname = "";
size = pf->SubType()->Size();
align = pf->SubType()->AlignSize();
d = builder->createReplaceableCompositeType(llvm::dwarf::DW_TAG_structure_type, "", scope,
unit, lineNo, 0, size, align,
llvm::DINode::FlagFwdDecl, fullname);
pf->SubType()->DiType(d);
fwdMap.push_back(std::make_pair(pf->SubType(), llvm::TrackingMDRef(d)));
size = pf->Size();
align = pf->AlignSize();
d = builder->createPointerType(d, size, align);
pf->DiType(d);
}
else
{
d = pf->DiType();
}
}
if (!d)
{
d = f->DebugType(builder);
ICE_IF(!d, "Expected debug type here");
}
size = f->Size() * CHAR_BIT;
align = f->AlignSize() * CHAR_BIT;
size_t offsetInBits = 0;
if (sl)
{
offsetInBits = sl->getElementOffsetInBits(index);
}
d = builder->createMemberType(scope, f->Name(), unit, lineNo, size, align, offsetInBits,
llvm::DINode::FlagZero, d);
index++;
eltTys.push_back(d);
}
if (diType)
{
return diType;
}
llvm::DINodeArray elements = builder->getOrCreateArray(eltTys);
std::string name = "";
uint64_t size = Size() * CHAR_BIT;
uint64_t align = AlignSize() * CHAR_BIT;
llvm::DIType* derivedFrom = 0;
return builder->createStructType(scope, name, unit, lineNo, size, align, llvm::DINode::FlagZero,
derivedFrom, elements);
}
bool RecordDecl::SameAs(const TypeDecl* ty) const
{
if (this == ty || this->clonedFrom == ty)
{
return true;
}
if (auto rd = llvm::dyn_cast<RecordDecl>(ty))
{
if (rd->clonedFrom == this)
{
return true;
}
}
return false;
}
ClassDecl::ClassDecl(const std::string& nm, const std::vector<FieldDecl*>& flds,
const std::vector<MemberFuncDecl*> mf, VariantDecl* v, ClassDecl* base)
: FieldCollection(TK_Class, flds), baseobj(base), variant(v), vtableType(0)
{
Name(nm);
if (baseobj)
{
membfuncs = baseobj->membfuncs;
}
std::vector<VarDef> self = { VarDef("self", this, VarDef::Flags::Reference) };
for (auto i : mf)
{
if (!i->IsStatic())
{
i->Proto()->SetBaseObj(this);
i->Proto()->AddExtraArgsFirst(self);
i->Proto()->SetHasSelf(true);
}
i->LongName(name + "$" + i->Proto()->Name());
bool found = false;
for (auto& j : membfuncs)
{
if (j->Proto()->Name() == i->Proto()->Name())
{
j = i;
found = true;
break;
}
}
if (!found)
{
membfuncs.push_back(i);
}
}
}
size_t ClassDecl::Size() const
{
EnsureSized();
return TypeDecl::Size();
}
void ClassDecl::DoDump() const
{
std::cerr << "Object: " << Name() << " ";
for (auto f : fields)
{
f->DoDump();
std::cerr << std::endl;
}
if (variant)
{
variant->DoDump();
}
}
size_t ClassDecl::MembFuncCount() const
{
return membfuncs.size();
}
int ClassDecl::MembFunc(const std::string& nm) const
{
for (size_t i = 0; i < membfuncs.size(); i++)
{
if (membfuncs[i]->Proto()->Name() == nm)
{
return i;
}
}
return -1;
}
MemberFuncDecl* ClassDecl::GetMembFunc(size_t index) const
{
ICE_IF(index >= membfuncs.size(), "Expected index to be in range");
return membfuncs[index];
}
size_t ClassDecl::NumVirtFuncs() const
{
size_t count = 0;
for (auto mf : membfuncs)
{
count += mf->IsVirtual() || mf->IsOverride();
}
return count;
}
llvm::Type* ClassDecl::VTableType(bool opaque) const
{
if (vtableType && (opaque || !vtableType->isOpaque()))
{
return vtableType;
}
if (baseobj)
{
(void)baseobj->VTableType(opaque);
}
std::vector<llvm::Type*> vt;
bool needed = false;
int index = 0;
for (auto m : membfuncs)
{
if (m->IsVirtual())
{
if (m->VirtIndex() == -1)
{
m->VirtIndex(index);
}
index++;
needed = true;
}
else if (m->IsOverride())
{
int elem = (baseobj) ? baseobj->MembFunc(m->Proto()->Name()) : -1;
if (elem < 0)
{
std::cerr << "Overriding function " + m->Proto()->Name() +
" that is not a virtual function in the baseclass!";
return 0;
}
// We need to continue digging here for multi-level functions
MemberFuncDecl* mf = baseobj->GetMembFunc(elem);
m->VirtIndex(mf->VirtIndex());
needed = true;
index++;
}
if (!opaque && (m->IsOverride() || m->IsVirtual()))
{