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arrays.cpp
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//===-- arrays.cpp --------------------------------------------------------===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
#include "gen/arrays.h"
#include "aggregate.h"
#include "declaration.h"
#include "dsymbol.h"
#include "expression.h"
#include "init.h"
#include "module.h"
#include "mtype.h"
#include "gen/dvalue.h"
#include "gen/irstate.h"
#include "gen/llvm.h"
#include "gen/llvmhelpers.h"
#include "gen/logger.h"
#include "gen/runtime.h"
#include "gen/tollvm.h"
#include "ir/irmodule.h"
//////////////////////////////////////////////////////////////////////////////////////////
static LLValue *DtoSlice(DValue *dval)
{
LLValue *val = dval->getRVal();
if (dval->getType()->toBasetype()->ty == Tsarray) {
// Convert static array to slice
LLStructType *type = DtoArrayType(LLType::getInt8Ty(gIR->context()));
LLValue *array = DtoRawAlloca(type, 0, ".array");
DtoStore(DtoArrayLen(dval), DtoGEPi(array, 0, 0, ".len"));
DtoStore(DtoBitCast(val, getVoidPtrType()), DtoGEPi(array, 0, 1, ".ptr"));
val = DtoLoad(array);
}
return val;
}
//////////////////////////////////////////////////////////////////////////////////////////
static LLValue *DtoSlicePtr(DValue *dval)
{
Loc loc;
LLStructType *type = DtoArrayType(LLType::getInt8Ty(gIR->context()));
Type *vt = dval->getType()->toBasetype();
if (vt->ty == Tarray)
return makeLValue(loc, dval);
bool isStaticArray = vt->ty == Tsarray;
LLValue *val = isStaticArray ? dval->getRVal() : makeLValue(loc, dval);
LLValue *array = DtoRawAlloca(type, 0, ".array");
LLValue *len = isStaticArray ? DtoArrayLen(dval) : DtoConstSize_t(1);
DtoStore(len, DtoGEPi(array, 0, 0, ".len"));
DtoStore(DtoBitCast(val, getVoidPtrType()), DtoGEPi(array, 0, 1, ".ptr"));
return array;
}
//////////////////////////////////////////////////////////////////////////////////////////
LLStructType* DtoArrayType(Type* arrayTy)
{
assert(arrayTy->nextOf());
LLType* elemty = i1ToI8(voidToI8(DtoType(arrayTy->nextOf())));
llvm::Type *elems[] = { DtoSize_t(), getPtrToType(elemty) };
return llvm::StructType::get(gIR->context(), elems, false);
}
LLStructType* DtoArrayType(LLType* t)
{
llvm::Type *elems[] = { DtoSize_t(), getPtrToType(t) };
return llvm::StructType::get(gIR->context(), elems, false);
}
//////////////////////////////////////////////////////////////////////////////////////////
LLArrayType* DtoStaticArrayType(Type* t)
{
t = t->toBasetype();
assert(t->ty == Tsarray);
TypeSArray* tsa = static_cast<TypeSArray*>(t);
Type* tnext = tsa->nextOf();
LLType* elemty = i1ToI8(voidToI8(DtoType(tnext)));
return LLArrayType::get(elemty, tsa->dim->toUInteger());
}
//////////////////////////////////////////////////////////////////////////////////////////
void DtoSetArrayToNull(LLValue* v)
{
Logger::println("DtoSetArrayToNull");
LOG_SCOPE;
assert(isaPointer(v));
LLType* t = v->getType()->getContainedType(0);
DtoStore(LLConstant::getNullValue(t), v);
}
//////////////////////////////////////////////////////////////////////////////////////////
void DtoArrayInit(Loc& loc, DValue* array, DValue* value, int op)
{
Logger::println("DtoArrayInit");
LOG_SCOPE;
if (op != -1 && op != TOKblit && arrayNeedsPostblit(array->type))
{
DtoArraySetAssign(loc, array, value, op);
return;
}
LLValue* dim = DtoArrayLen(array);
LLValue* ptr = DtoArrayPtr(array);
Type* arrayelemty = array->getType()->nextOf()->toBasetype();
// lets first optimize all zero/constant i8 initializations down to a memset.
// this simplifies codegen later on as llvm null's have no address!
LLValue *val = value->getRVal();
if (isaConstant(val) && (isaConstant(val)->isNullValue()
|| val->getType() == LLType::getInt8Ty(gIR->context())))
{
size_t X = getTypePaddedSize(val->getType());
LLValue* nbytes = gIR->ir->CreateMul(dim, DtoConstSize_t(X), ".nbytes");
if (isaConstant(val)->isNullValue())
DtoMemSetZero(ptr, nbytes);
else
DtoMemSet(ptr, val, nbytes);
return;
}
// create blocks
llvm::BasicBlock* oldend = gIR->scopeend();
llvm::BasicBlock* condbb = llvm::BasicBlock::Create(gIR->context(), "arrayinit.cond",
gIR->topfunc(), oldend);
llvm::BasicBlock* bodybb = llvm::BasicBlock::Create(gIR->context(), "arrayinit.body",
gIR->topfunc(), oldend);
llvm::BasicBlock* endbb = llvm::BasicBlock::Create(gIR->context(), "arrayinit.end",
gIR->topfunc(), oldend);
// initialize iterator
LLValue *itr = DtoAlloca(Type::tsize_t, "arrayinit.itr");
DtoStore(DtoConstSize_t(0), itr);
// move into the for condition block, ie. start the loop
assert(!gIR->scopereturned());
llvm::BranchInst::Create(condbb, gIR->scopebb());
// replace current scope
gIR->scope() = IRScope(condbb,bodybb);
// create the condition
LLValue* cond_val = gIR->ir->CreateICmpNE(DtoLoad(itr), dim, "arrayinit.condition");
// conditional branch
assert(!gIR->scopereturned());
llvm::BranchInst::Create(bodybb, endbb, cond_val, gIR->scopebb());
// rewrite scope
gIR->scope() = IRScope(bodybb, endbb);
// assign array element value
DValue *arrayelem = new DVarValue(arrayelemty, DtoGEP1(ptr, DtoLoad(itr), "arrayinit.arrayelem"));
DtoAssign(loc, arrayelem, value, op);
// increment iterator
DtoStore(gIR->ir->CreateAdd(DtoLoad(itr), DtoConstSize_t(1), "arrayinit.new_itr"), itr);
// loop
llvm::BranchInst::Create(condbb, gIR->scopebb());
// rewrite the scope
gIR->scope() = IRScope(endbb, oldend);
}
//////////////////////////////////////////////////////////////////////////////////////////
Type *DtoArrayElementType(Type *arrayType)
{
assert(arrayType->toBasetype()->nextOf());
Type *t = arrayType->toBasetype()->nextOf()->toBasetype();
while (t->ty == Tsarray)
t = t->nextOf()->toBasetype();
return t;
}
// Determine whether t is an array of structs that need a postblit.
bool arrayNeedsPostblit(Type *t)
{
t = DtoArrayElementType(t);
if (t->ty == Tstruct)
return static_cast<TypeStruct *>(t)->sym->postblit != 0;
return false;
}
// Does array assignment (or initialization) from another array of the same element type.
void DtoArrayAssign(DValue *array, DValue *value, int op)
{
Logger::println("DtoArrayAssign");
LOG_SCOPE;
assert(value && array);
assert(op != TOKblit);
// Use array->type instead of value->type so as to not accidentally pick
// up a superfluous const layer (TypeInfo_Const doesn't pass on postblit()).
Type *t = array->type->toBasetype();
assert(t->nextOf());
Type *elemType = t->nextOf()->toBasetype();
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, op == TOKconstruct ? "_d_arrayctor" : "_d_arrayassign");
LLValue* args[] = {
DtoTypeInfoOf(elemType),
DtoAggrPaint(DtoSlice(value), fn->getFunctionType()->getParamType(1)),
DtoAggrPaint(DtoSlice(array), fn->getFunctionType()->getParamType(2))
};
LLCallSite call = gIR->CreateCallOrInvoke(fn, args, ".array");
call.setCallingConv(llvm::CallingConv::C);
}
// If op is TOKconstruct, does construction of an array;
// otherwise, does assignment to an array.
void DtoArraySetAssign(Loc &loc, DValue *array, DValue *value, int op)
{
Logger::println("DtoArraySetAssign");
LOG_SCOPE;
assert(array && value);
assert(op != TOKblit);
LLValue *ptr = DtoArrayPtr(array);
LLValue *len = DtoArrayLen(array);
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, op == TOKconstruct ? "_d_arraysetctor" : "_d_arraysetassign");
LLValue* args[] = {
DtoBitCast(ptr, getVoidPtrType()),
DtoBitCast(makeLValue(loc, value), getVoidPtrType()),
len,
DtoTypeInfoOf(array->type->toBasetype()->nextOf()->toBasetype())
};
LLCallSite call = gIR->CreateCallOrInvoke(fn, args, ".newptr");
call.setCallingConv(llvm::CallingConv::C);
}
//////////////////////////////////////////////////////////////////////////////////////////
void DtoSetArray(DValue* array, LLValue* dim, LLValue* ptr)
{
Logger::println("SetArray");
LLValue *arr = array->getLVal();
assert(isaStruct(arr->getType()->getContainedType(0)));
DtoStore(dim, DtoGEPi(arr,0,0));
DtoStore(ptr, DtoGEPi(arr,0,1));
}
//////////////////////////////////////////////////////////////////////////////////////////
LLConstant* DtoConstArrayInitializer(ArrayInitializer* arrinit)
{
Logger::println("DtoConstArrayInitializer: %s | %s", arrinit->toChars(), arrinit->type->toChars());
LOG_SCOPE;
assert(arrinit->value.dim == arrinit->index.dim);
// get base array type
Type* arrty = arrinit->type->toBasetype();
size_t arrlen = arrinit->dim;
// for statis arrays, dmd does not include any trailing default
// initialized elements in the value/index lists
if (arrty->ty == Tsarray)
{
TypeSArray* tsa = static_cast<TypeSArray*>(arrty);
arrlen = static_cast<size_t>(tsa->dim->toInteger());
}
// make sure the number of initializers is sane
if (arrinit->index.dim > arrlen || arrinit->dim > arrlen)
{
error(arrinit->loc, "too many initializers, %u, for array[%zu]", arrinit->index.dim, arrlen);
fatal();
}
// get elem type
Type* elemty;
if (arrty->ty == Tvector)
elemty = static_cast<TypeVector *>(arrty)->elementType();
else
elemty = arrty->nextOf();
LLType* llelemty = i1ToI8(voidToI8(DtoType(elemty)));
// true if array elements differ in type, can happen with array of unions
bool mismatch = false;
// allocate room for initializers
std::vector<LLConstant*> initvals(arrlen, NULL);
// go through each initializer, they're not sorted by index by the frontend
size_t j = 0;
for (size_t i = 0; i < arrinit->index.dim; i++)
{
// get index
Expression* idx = static_cast<Expression*>(arrinit->index.data[i]);
// idx can be null, then it's just the next element
if (idx)
j = idx->toInteger();
assert(j < arrlen);
// get value
Initializer* val = static_cast<Initializer*>(arrinit->value.data[i]);
assert(val);
// error check from dmd
if (initvals[j] != NULL)
{
error(arrinit->loc, "duplicate initialization for index %zu", j);
}
LLConstant* c = DtoConstInitializer(val->loc, elemty, val);
assert(c);
if (c->getType() != llelemty)
mismatch = true;
initvals[j] = c;
j++;
}
// die now if there was errors
if (global.errors)
fatal();
// fill out any null entries still left with default values
// element default initializer
LLConstant* defelem = DtoConstExpInit(arrinit->loc, elemty, elemty->defaultInit(arrinit->loc));
bool mismatch2 = (defelem->getType() != llelemty);
for (size_t i = 0; i < arrlen; i++)
{
if (initvals[i] != NULL)
continue;
initvals[i] = defelem;
if (mismatch2)
mismatch = true;
}
LLConstant* constarr;
if (mismatch)
constarr = LLConstantStruct::getAnon(gIR->context(), initvals); // FIXME should this pack?
else
{
if (arrty->ty == Tvector)
constarr = llvm::ConstantVector::get(initvals);
else
constarr = LLConstantArray::get(LLArrayType::get(llelemty, arrlen), initvals);
}
// std::cout << "constarr: " << *constarr << std::endl;
// if the type is a static array, we're done
if (arrty->ty == Tsarray || arrty->ty == Tvector)
return constarr;
// we need to make a global with the data, so we have a pointer to the array
// Important: don't make the gvar constant, since this const initializer might
// be used as an initializer for a static T[] - where modifying contents is allowed.
LLGlobalVariable* gvar = new LLGlobalVariable(*gIR->module, constarr->getType(), false, LLGlobalValue::InternalLinkage, constarr, ".constarray");
if (arrty->ty == Tpointer)
// we need to return pointer to the static array.
return DtoBitCast(gvar, DtoType(arrty));
LLConstant* idxs[2] = { DtoConstUint(0), DtoConstUint(0) };
LLConstant* gep = llvm::ConstantExpr::getGetElementPtr(gvar, idxs, true);
gep = llvm::ConstantExpr::getBitCast(gvar, getPtrToType(llelemty));
return DtoConstSlice(DtoConstSize_t(arrlen), gep, arrty);
}
//////////////////////////////////////////////////////////////////////////////////////////
bool isConstLiteral(ArrayLiteralExp* ale)
{
for (size_t i = 0; i < ale->elements->dim; ++i)
{
// We have to check specifically for '1', as SymOffExp is classified as
// '2' and the address of a local variable is not an LLVM constant.
if ((*ale->elements)[i]->isConst() != 1)
return false;
}
return true;
}
//////////////////////////////////////////////////////////////////////////////////////////
llvm::Constant* arrayLiteralToConst(IRState* p, ArrayLiteralExp* ale)
{
assert(isConstLiteral(ale) && "Array literal cannot be represented as a constant.");
// Build the initializer. We have to take care as due to unions in the
// element types (with different fields being initialized), we can end up
// with different types for the initializer values. In this case, we
// generate a packed struct constant instead of an array constant.
LLType *elementType = NULL;
bool differentTypes = false;
std::vector<LLConstant*> vals;
vals.reserve(ale->elements->dim);
for (unsigned i = 0; i < ale->elements->dim; ++i)
{
llvm::Constant *val = (*ale->elements)[i]->toConstElem(p);
if (!elementType)
elementType = val->getType();
else
differentTypes |= (elementType != val->getType());
vals.push_back(val);
}
if (differentTypes)
return llvm::ConstantStruct::getAnon(vals, true);
if (!elementType)
{
assert(ale->elements->dim == 0);
elementType = i1ToI8(voidToI8(DtoType(ale->type->toBasetype()->nextOf())));
return llvm::ConstantArray::get(LLArrayType::get(elementType, 0), vals);
}
llvm::ArrayType *t = llvm::ArrayType::get(elementType, ale->elements->dim);
return llvm::ConstantArray::get(t, vals);
}
//////////////////////////////////////////////////////////////////////////////////////////
void initializeArrayLiteral(IRState* p, ArrayLiteralExp* ale, LLValue* dstMem)
{
size_t elemCount = ale->elements->dim;
// Don't try to write nothing to a zero-element array, we might represent it
// as a null pointer.
if (elemCount == 0) return;
if (isConstLiteral(ale))
{
llvm::Constant* constarr = arrayLiteralToConst(p, ale);
// Emit a global for longer arrays, as an inline constant is always
// lowered to a series of movs or similar at the asm level. The
// optimizer can still decide to promote the memcpy intrinsic, so
// the cutoff merely affects compilation speed.
if (elemCount <= 4)
{
DtoStore(constarr, DtoBitCast(dstMem, getPtrToType(constarr->getType())));
}
else
{
llvm::GlobalVariable* gvar = new llvm::GlobalVariable(
*gIR->module,
constarr->getType(),
true,
LLGlobalValue::InternalLinkage,
constarr,
".arrayliteral"
);
gvar->setUnnamedAddr(true);
DtoMemCpy(dstMem, gvar, DtoConstSize_t(getTypePaddedSize(constarr->getType())));
}
}
else
{
// Store the elements one by one.
for (size_t i = 0; i < elemCount; ++i)
{
DValue* e = (*ale->elements)[i]->toElem(p);
LLValue* elemAddr = DtoGEPi(dstMem, 0, i, "tmp", p->scopebb());
DVarValue* vv = new DVarValue(e->type, elemAddr);
DtoAssign(ale->loc, vv, e);
}
}
}
//////////////////////////////////////////////////////////////////////////////////////////
static LLValue* get_slice_ptr(DSliceValue* e, LLValue*& sz)
{
assert(e->len != 0);
LLType* t = e->ptr->getType()->getContainedType(0);
sz = gIR->ir->CreateMul(DtoConstSize_t(getTypePaddedSize(t)), e->len, "tmp");
return DtoBitCast(e->ptr, getVoidPtrType());
}
static void copySlice(LLValue* dstarr, LLValue* sz1, LLValue* srcarr, LLValue* sz2)
{
if (global.params.useAssert || gIR->emitArrayBoundsChecks())
{
LLValue* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_array_slice_copy");
gIR->CreateCallOrInvoke4(fn, dstarr, sz1, srcarr, sz2);
}
else
{
// We might have dstarr == srcarr at compile time, but as long as
// sz1 == 0 at runtime, this would probably still be legal (the C spec
// is unclear here).
DtoMemCpy(dstarr, srcarr, sz1);
}
}
void DtoArrayCopySlices(DSliceValue* dst, DSliceValue* src)
{
Logger::println("ArrayCopySlices");
LLValue *sz1,*sz2;
LLValue* dstarr = get_slice_ptr(dst,sz1);
LLValue* srcarr = get_slice_ptr(src,sz2);
copySlice(dstarr, sz1, srcarr, sz2);
}
void DtoArrayCopyToSlice(DSliceValue* dst, DValue* src)
{
Logger::println("ArrayCopyToSlice");
LLValue* sz1;
LLValue* dstarr = get_slice_ptr(dst,sz1);
LLValue* srcarr = DtoBitCast(DtoArrayPtr(src), getVoidPtrType());
LLType* arrayelemty = voidToI8(DtoType(src->getType()->nextOf()->toBasetype()));
LLValue* sz2 = gIR->ir->CreateMul(DtoConstSize_t(getTypePaddedSize(arrayelemty)), DtoArrayLen(src), "tmp");
copySlice(dstarr, sz1, srcarr, sz2);
}
//////////////////////////////////////////////////////////////////////////////////////////
void DtoStaticArrayCopy(LLValue* dst, LLValue* src)
{
Logger::println("StaticArrayCopy");
size_t n = getTypePaddedSize(dst->getType()->getContainedType(0));
DtoMemCpy(dst, src, DtoConstSize_t(n));
}
//////////////////////////////////////////////////////////////////////////////////////////
LLConstant* DtoConstSlice(LLConstant* dim, LLConstant* ptr, Type *type)
{
LLConstant* values[2] = { dim, ptr };
llvm::ArrayRef<LLConstant*> valuesRef = llvm::makeArrayRef(values, 2);
LLStructType *lltype = type ?
isaStruct(DtoType(type)) :
LLConstantStruct::getTypeForElements(gIR->context(), valuesRef);
return LLConstantStruct::get(lltype, valuesRef);
}
//////////////////////////////////////////////////////////////////////////////////////////
static bool isInitialized(Type* et) {
// Strip static array types from element type
Type* bt = et->toBasetype();
while (bt->ty == Tsarray) {
et = bt->nextOf();
bt = et->toBasetype();
}
// If it's a typedef with "= void" initializer then don't initialize.
if (et->ty == Ttypedef) {
Logger::println("Typedef: %s", et->toChars());
TypedefDeclaration* tdd = static_cast<TypeTypedef*>(et)->sym;
if (tdd && tdd->init && tdd->init->isVoidInitializer())
return false;
}
// Otherwise, it's always initialized.
return true;
}
//////////////////////////////////////////////////////////////////////////////////////////
static DSliceValue *getSlice(Type *arrayType, LLValue *array)
{
// Get ptr and length of the array
LLValue* arrayLen = DtoExtractValue(array, 0, ".len");
LLValue* newptr = DtoExtractValue(array, 1, ".ptr");
// cast pointer to wanted type
LLType* dstType = DtoType(arrayType)->getContainedType(1);
if (newptr->getType() != dstType)
newptr = DtoBitCast(newptr, dstType, ".gc_mem");
return new DSliceValue(arrayType, arrayLen, newptr);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoNewDynArray(Loc& loc, Type* arrayType, DValue* dim, bool defaultInit)
{
Logger::println("DtoNewDynArray : %s", arrayType->toChars());
LOG_SCOPE;
// typeinfo arg
LLValue* arrayTypeInfo = DtoTypeInfoOf(arrayType);
// dim arg
assert(DtoType(dim->getType()) == DtoSize_t());
LLValue* arrayLen = dim->getRVal();
// get runtime function
Type* eltType = arrayType->toBasetype()->nextOf();
if (defaultInit && !isInitialized(eltType))
defaultInit = false;
bool zeroInit = eltType->isZeroInit();
const char* fnname = defaultInit ?
(zeroInit ? "_d_newarrayT" : "_d_newarrayiT") :
"_d_newarrayvT";
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, fnname);
// call allocator
LLValue* newArray = gIR->CreateCallOrInvoke2(fn, arrayTypeInfo, arrayLen, ".gc_mem").getInstruction();
return getSlice(arrayType, newArray);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoNewMulDimDynArray(Loc& loc, Type* arrayType, DValue** dims, size_t ndims, bool defaultInit)
{
Logger::println("DtoNewMulDimDynArray : %s", arrayType->toChars());
LOG_SCOPE;
// typeinfo arg
LLValue* arrayTypeInfo = DtoTypeInfoOf(arrayType);
// get value type
Type* vtype = arrayType->toBasetype();
for (size_t i=0; i<ndims; ++i)
vtype = vtype->nextOf();
// get runtime function
bool zeroInit = vtype->isZeroInit();
if (defaultInit && !isInitialized(vtype))
defaultInit = false;
const char* fnname = zeroInit ? "_d_newarraymT" : "_d_newarraymiT";
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, fnname);
std::vector<LLValue*> args;
args.reserve(ndims+2);
args.push_back(arrayTypeInfo);
args.push_back(DtoConstSize_t(ndims));
// build dims
for (size_t i=0; i<ndims; ++i)
args.push_back(dims[i]->getRVal());
// call allocator
LLValue* newptr = gIR->CreateCallOrInvoke(fn, args, ".gc_mem").getInstruction();
if (Logger::enabled())
Logger::cout() << "final ptr = " << *newptr << '\n';
return getSlice(arrayType, newptr);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoResizeDynArray(Type* arrayType, DValue* array, LLValue* newdim)
{
Logger::println("DtoResizeDynArray : %s", arrayType->toChars());
LOG_SCOPE;
assert(array);
assert(newdim);
assert(arrayType);
assert(arrayType->toBasetype()->ty == Tarray);
// decide on what runtime function to call based on whether the type is zero initialized
bool zeroInit = arrayType->toBasetype()->nextOf()->isZeroInit();
// call runtime
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, zeroInit ? "_d_arraysetlengthT" : "_d_arraysetlengthiT" );
LLValue* args[] = {
DtoTypeInfoOf(arrayType),
newdim,
DtoBitCast(array->getLVal(), fn->getFunctionType()->getParamType(2))
};
LLValue* newArray = gIR->CreateCallOrInvoke(fn, args, ".gc_mem").getInstruction();
return getSlice(arrayType, newArray);
}
//////////////////////////////////////////////////////////////////////////////////////////
void DtoCatAssignElement(Loc& loc, Type* arrayType, DValue* array, Expression* exp)
{
Logger::println("DtoCatAssignElement");
LOG_SCOPE;
assert(array);
LLValue *oldLength = DtoArrayLen(array);
// Do not move exp->toElem call after creating _d_arrayappendcTX,
// otherwise a ~= a[$-i] won't work correctly
DValue *expVal = exp->toElem(gIR);
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_arrayappendcTX");
LLValue* args[] = {
DtoTypeInfoOf(arrayType),
DtoBitCast(array->getLVal(), fn->getFunctionType()->getParamType(1)),
DtoConstSize_t(1)
};
LLValue* appendedArray = gIR->CreateCallOrInvoke(fn, args, ".appendedArray").getInstruction();
appendedArray = DtoAggrPaint(appendedArray, DtoType(arrayType));
LLValue* val = DtoArrayPtr(array);
val = DtoGEP1(val, oldLength, "lastElem");
DtoAssign(loc, new DVarValue(arrayType->nextOf(), val), expVal);
callPostblit(loc, exp, val);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoCatAssignArray(DValue* arr, Expression* exp)
{
Logger::println("DtoCatAssignArray");
LOG_SCOPE;
Type *arrayType = arr->getType();
// Prepare arguments
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_arrayappendT");
LLSmallVector<LLValue*,3> args;
// TypeInfo ti
args.push_back(DtoTypeInfoOf(arrayType));
// byte[] *px
args.push_back(DtoBitCast(arr->getLVal(), fn->getFunctionType()->getParamType(1)));
// byte[] y
LLValue *y = DtoSlice(exp->toElem(gIR));
y = DtoAggrPaint(y, fn->getFunctionType()->getParamType(2));
args.push_back(y);
// Call _d_arrayappendT
LLValue* newArray = gIR->CreateCallOrInvoke(fn, args, ".appendedArray").getInstruction();
return getSlice(arrayType, newArray);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoCatArrays(Type* arrayType, Expression* exp1, Expression* exp2)
{
Logger::println("DtoCatAssignArray");
LOG_SCOPE;
std::vector<LLValue*> args;
LLFunction* fn = 0;
if (exp1->op == TOKcat)
{ // handle multiple concat
fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_arraycatnT");
args.push_back(DtoSlicePtr(exp2->toElem(gIR)));
CatExp *ce = static_cast<CatExp*>(exp1);
do
{
args.push_back(DtoSlicePtr(ce->e2->toElem(gIR)));
ce = static_cast<CatExp *>(ce->e1);
} while (ce->op == TOKcat);
args.push_back(DtoSlicePtr(ce->toElem(gIR)));
// uint n
args.push_back(DtoConstUint(args.size()));
// TypeInfo ti
args.push_back(DtoTypeInfoOf(arrayType));
std::reverse(args.begin(), args.end());
}
else
{
fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_arraycatT");
// TypeInfo ti
args.push_back(DtoTypeInfoOf(arrayType));
// byte[] x
LLValue *val = DtoLoad(DtoSlicePtr(exp1->toElem(gIR)));
val = DtoAggrPaint(val, fn->getFunctionType()->getParamType(1));
args.push_back(val);
// byte[] y
val = DtoLoad(DtoSlicePtr(exp2->toElem(gIR)));
val = DtoAggrPaint(val, fn->getFunctionType()->getParamType(2));
args.push_back(val);
}
LLValue *newArray = gIR->CreateCallOrInvoke(fn, args, ".appendedArray").getInstruction();
return getSlice(arrayType, newArray);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoAppendDChar(DValue* arr, Expression* exp, const char *func)
{
Type *arrayType = arr->getType();
DValue* valueToAppend = exp->toElem(gIR);
// Prepare arguments
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, func);
LLValue* args[] = {
// ref string x
DtoBitCast(arr->getLVal(), fn->getFunctionType()->getParamType(0)),
// dchar c
DtoBitCast(valueToAppend->getRVal(), fn->getFunctionType()->getParamType(1))
};
// Call function
LLValue* newArray = gIR->CreateCallOrInvoke(fn, args, ".appendedArray").getInstruction();
return getSlice(arrayType, newArray);
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoAppendDCharToString(DValue* arr, Expression* exp)
{
Logger::println("DtoAppendDCharToString");
LOG_SCOPE;
return DtoAppendDChar(arr, exp, "_d_arrayappendcd");
}
//////////////////////////////////////////////////////////////////////////////////////////
DSliceValue* DtoAppendDCharToUnicodeString(DValue* arr, Expression* exp)
{
Logger::println("DtoAppendDCharToUnicodeString");
LOG_SCOPE;
return DtoAppendDChar(arr, exp, "_d_arrayappendwd");
}
//////////////////////////////////////////////////////////////////////////////////////////
// helper for eq and cmp
static LLValue* DtoArrayEqCmp_impl(Loc& loc, const char* func, DValue* l, DValue* r, bool useti)
{
Logger::println("comparing arrays");
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, func);
assert(fn);
// find common dynamic array type
Type* commonType = l->getType()->toBasetype()->nextOf()->arrayOf();
// cast static arrays to dynamic ones, this turns them into DSliceValues
Logger::println("casting to dynamic arrays");
l = DtoCastArray(loc, l, commonType);
r = DtoCastArray(loc, r, commonType);
LLSmallVector<LLValue*, 3> args;
// get values, reinterpret cast to void[]
args.push_back(DtoAggrPaint(l->getRVal(), DtoArrayType(LLType::getInt8Ty(gIR->context()))));
args.push_back(DtoAggrPaint(r->getRVal(), DtoArrayType(LLType::getInt8Ty(gIR->context()))));
// pass array typeinfo ?
if (useti) {
Type* t = l->getType();
LLValue* tival = DtoTypeInfoOf(t);
// DtoTypeInfoOf only does declare, not enough in this case :/
t->vtinfo->codegen(Type::sir);
#if 0
if (Logger::enabled())
Logger::cout() << "typeinfo decl: " << *tival << '\n';
#endif
args.push_back(DtoBitCast(tival, fn->getFunctionType()->getParamType(2)));
}
LLCallSite call = gIR->CreateCallOrInvoke(fn, args, "tmp");
return call.getInstruction();
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoArrayEquals(Loc& loc, TOK op, DValue* l, DValue* r)
{
LLValue* res = DtoArrayEqCmp_impl(loc, _adEq, l, r, true);
res = gIR->ir->CreateICmpNE(res, DtoConstInt(0), "tmp");
if (op == TOKnotequal)
res = gIR->ir->CreateNot(res, "tmp");
return res;
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoArrayCompare(Loc& loc, TOK op, DValue* l, DValue* r)
{
LLValue* res = 0;
llvm::ICmpInst::Predicate cmpop;
tokToIcmpPred(op, false, &cmpop, &res);
if (!res)
{
Type* t = l->getType()->toBasetype()->nextOf()->toBasetype();
if (t->ty == Tchar)
res = DtoArrayEqCmp_impl(loc, "_adCmpChar", l, r, false);
else
res = DtoArrayEqCmp_impl(loc, _adCmp, l, r, true);
res = gIR->ir->CreateICmp(cmpop, res, DtoConstInt(0), "tmp");
}
assert(res);
return res;
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoArrayCastLength(LLValue* len, LLType* elemty, LLType* newelemty)
{
Logger::println("DtoArrayCastLength");
LOG_SCOPE;
assert(len);
assert(elemty);
assert(newelemty);
size_t esz = getTypePaddedSize(elemty);
size_t nsz = getTypePaddedSize(newelemty);
if (esz == nsz)
return len;
LLValue* args[] = {
len,
LLConstantInt::get(DtoSize_t(), esz, false),
LLConstantInt::get(DtoSize_t(), nsz, false)
};
LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_array_cast_len");
return gIR->CreateCallOrInvoke(fn, args, "tmp").getInstruction();
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoDynArrayIs(TOK op, DValue* l, DValue* r)
{
LLValue *len1, *ptr1, *len2, *ptr2;
assert(l);
assert(r);
// compare lengths
len1 = DtoArrayLen(l);
len2 = DtoArrayLen(r);
LLValue* b1 = gIR->ir->CreateICmpEQ(len1,len2,"tmp");
// compare pointers
ptr1 = DtoArrayPtr(l);
ptr2 = DtoArrayPtr(r);
LLValue* b2 = gIR->ir->CreateICmpEQ(ptr1,ptr2,"tmp");
// combine
LLValue* res = gIR->ir->CreateAnd(b1,b2,"tmp");
// return result
return (op == TOKnotidentity) ? gIR->ir->CreateNot(res) : res;
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoArrayLen(DValue* v)
{
Logger::println("DtoArrayLen");
LOG_SCOPE;
Type* t = v->getType()->toBasetype();
if (t->ty == Tarray) {
if (DSliceValue* s = v->isSlice())
return s->len;
else if (v->isNull())
return DtoConstSize_t(0);
else if (v->isLVal())
return DtoLoad(DtoGEPi(v->getLVal(), 0,0), ".len");
return gIR->ir->CreateExtractValue(v->getRVal(), 0, ".len");
}
else if (t->ty == Tsarray) {
assert(!v->isSlice());
assert(!v->isNull());
assert(v->type->toBasetype()->ty == Tsarray);
TypeSArray *sarray = static_cast<TypeSArray*>(v->type->toBasetype());
return DtoConstSize_t(sarray->dim->toUInteger());
}
llvm_unreachable("unsupported array for len");
}
//////////////////////////////////////////////////////////////////////////////////////////
LLValue* DtoArrayPtr(DValue* v)
{
Logger::println("DtoArrayPtr");
LOG_SCOPE;
Type* t = v->getType()->toBasetype();