ldc/ir/irtype.cpp
2015-11-02 11:30:40 +02:00

237 lines
7.3 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

//===-- irtype.cpp --------------------------------------------------------===//
//
// LDC the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/LLVMContext.h"
#include "mars.h"
#include "mtype.h"
#include "gen/irstate.h"
#include "gen/logger.h"
#include "gen/tollvm.h"
#include "ir/irtype.h"
// This code uses llvm::getGlobalContext() as these functions are invoked before
// gIR is set.
// ... thus it segfaults on gIR==NULL
//////////////////////////////////////////////////////////////////////////////
IrType::IrType(Type *dt, LLType *lt) : dtype(dt), type(lt) {
assert(dt && "null D Type");
assert(lt && "null LLVM Type");
assert(!dt->ctype && "already has IrType");
}
//////////////////////////////////////////////////////////////////////////////
IrFuncTy &IrType::getIrFuncTy() {
llvm_unreachable("cannot get IrFuncTy from non lazy/function/delegate");
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
IrTypeBasic::IrTypeBasic(Type *dt) : IrType(dt, basic2llvm(dt)) {}
//////////////////////////////////////////////////////////////////////////////
IrTypeBasic *IrTypeBasic::get(Type *dt) {
auto t = new IrTypeBasic(dt);
dt->ctype = t;
return t;
}
//////////////////////////////////////////////////////////////////////////////
LLType *IrTypeBasic::getComplexType(llvm::LLVMContext &ctx, LLType *type) {
llvm::Type *types[] = {type, type};
return llvm::StructType::get(ctx, types, false);
}
//////////////////////////////////////////////////////////////////////////////
static inline llvm::Type *getReal80Type(llvm::LLVMContext &ctx) {
llvm::Triple::ArchType const a = global.params.targetTriple.getArch();
bool const anyX86 = (a == llvm::Triple::x86) || (a == llvm::Triple::x86_64);
// only x86 has 80bit float - but no support with MS C Runtime!
if (anyX86 && !global.params.targetTriple.isWindowsMSVCEnvironment()) {
return llvm::Type::getX86_FP80Ty(ctx);
}
return llvm::Type::getDoubleTy(ctx);
}
//////////////////////////////////////////////////////////////////////////////
llvm::Type *IrTypeBasic::basic2llvm(Type *t) {
llvm::LLVMContext &ctx = llvm::getGlobalContext();
switch (t->ty) {
case Tvoid:
return llvm::Type::getVoidTy(ctx);
case Tint8:
case Tuns8:
case Tchar:
return llvm::Type::getInt8Ty(ctx);
case Tint16:
case Tuns16:
case Twchar:
return llvm::Type::getInt16Ty(ctx);
case Tint32:
case Tuns32:
case Tdchar:
return llvm::Type::getInt32Ty(ctx);
case Tint64:
case Tuns64:
return llvm::Type::getInt64Ty(ctx);
case Tint128:
case Tuns128:
return llvm::IntegerType::get(ctx, 128);
case Tfloat32:
case Timaginary32:
return llvm::Type::getFloatTy(ctx);
case Tfloat64:
case Timaginary64:
return llvm::Type::getDoubleTy(ctx);
case Tfloat80:
case Timaginary80:
return getReal80Type(ctx);
case Tcomplex32:
return getComplexType(ctx, llvm::Type::getFloatTy(ctx));
case Tcomplex64:
return getComplexType(ctx, llvm::Type::getDoubleTy(ctx));
case Tcomplex80:
return getComplexType(ctx, getReal80Type(ctx));
case Tbool:
return llvm::Type::getInt1Ty(ctx);
default:
llvm_unreachable("Unknown basic type.");
}
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
IrTypePointer::IrTypePointer(Type *dt, LLType *lt) : IrType(dt, lt) {}
//////////////////////////////////////////////////////////////////////////////
IrTypePointer *IrTypePointer::get(Type *dt) {
assert(!dt->ctype);
assert((dt->ty == Tpointer || dt->ty == Tnull) && "not pointer/null type");
LLType *elemType;
if (dt->ty == Tnull) {
elemType = llvm::Type::getInt8Ty(llvm::getGlobalContext());
} else {
elemType = DtoMemType(dt->nextOf());
// DtoType could have already created the same type, e.g. for
// dt == Node* in struct Node { Node* n; }.
if (dt->ctype) {
return dt->ctype->isPointer();
}
}
auto t = new IrTypePointer(dt, llvm::PointerType::get(elemType, 0));
dt->ctype = t;
return t;
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
IrTypeSArray::IrTypeSArray(Type *dt) : IrType(dt, sarray2llvm(dt)) {}
//////////////////////////////////////////////////////////////////////////////
IrTypeSArray *IrTypeSArray::get(Type *dt) {
auto t = new IrTypeSArray(dt);
dt->ctype = t;
return t;
}
//////////////////////////////////////////////////////////////////////////////
llvm::Type *IrTypeSArray::sarray2llvm(Type *t) {
assert(t->ty == Tsarray && "not static array type");
TypeSArray *tsa = static_cast<TypeSArray *>(t);
uint64_t dim = static_cast<uint64_t>(tsa->dim->toUInteger());
LLType *elemType = DtoMemType(t->nextOf());
return llvm::ArrayType::get(elemType, dim);
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
IrTypeArray::IrTypeArray(Type *dt, LLType *lt) : IrType(dt, lt) {}
//////////////////////////////////////////////////////////////////////////////
IrTypeArray *IrTypeArray::get(Type *dt) {
assert(!dt->ctype);
assert(dt->ty == Tarray && "not dynamic array type");
LLType *elemType = DtoMemType(dt->nextOf());
// Could have already built the type as part of a struct forward reference,
// just as for pointers.
if (!dt->ctype) {
llvm::Type *types[] = {DtoSize_t(), llvm::PointerType::get(elemType, 0)};
LLType *at = llvm::StructType::get(llvm::getGlobalContext(), types, false);
dt->ctype = new IrTypeArray(dt, at);
}
return dt->ctype->isArray();
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
IrTypeVector::IrTypeVector(Type *dt) : IrType(dt, vector2llvm(dt)) {}
//////////////////////////////////////////////////////////////////////////////
IrTypeVector *IrTypeVector::get(Type *dt) {
auto t = new IrTypeVector(dt);
dt->ctype = t;
return t;
}
//////////////////////////////////////////////////////////////////////////////
llvm::Type *IrTypeVector::vector2llvm(Type *dt) {
assert(dt->ty == Tvector && "not vector type");
TypeVector *tv = static_cast<TypeVector *>(dt);
assert(tv->basetype->ty == Tsarray);
TypeSArray *tsa = static_cast<TypeSArray *>(tv->basetype);
uint64_t dim = static_cast<uint64_t>(tsa->dim->toUInteger());
LLType *elemType = DtoMemType(tsa->next);
return llvm::VectorType::get(elemType, dim);
}
//////////////////////////////////////////////////////////////////////////////