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llvm-project/flang/lib/Optimizer/Builder/FIRBuilder.cpp

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//===-- FIRBuilder.cpp ----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "flang/Optimizer/Builder/FIRBuilder.h"
#include "flang/Lower/Todo.h"
#include "flang/Optimizer/Builder/BoxValue.h"
#include "flang/Optimizer/Builder/Character.h"
#include "flang/Optimizer/Builder/Complex.h"
#include "flang/Optimizer/Builder/MutableBox.h"
#include "flang/Optimizer/Builder/Runtime/Assign.h"
#include "flang/Optimizer/Dialect/FIRAttr.h"
#include "flang/Optimizer/Dialect/FIROpsSupport.h"
#include "flang/Optimizer/Support/FatalError.h"
#include "flang/Optimizer/Support/InternalNames.h"
#include "mlir/Dialect/OpenMP/OpenMPDialect.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MD5.h"
static constexpr std::size_t nameLengthHashSize = 32;
mlir::FuncOp fir::FirOpBuilder::createFunction(mlir::Location loc,
mlir::ModuleOp module,
llvm::StringRef name,
mlir::FunctionType ty) {
return fir::createFuncOp(loc, module, name, ty);
}
mlir::FuncOp fir::FirOpBuilder::getNamedFunction(mlir::ModuleOp modOp,
llvm::StringRef name) {
return modOp.lookupSymbol<mlir::FuncOp>(name);
}
mlir::FuncOp fir::FirOpBuilder::getNamedFunction(mlir::ModuleOp modOp,
mlir::SymbolRefAttr symbol) {
return modOp.lookupSymbol<mlir::FuncOp>(symbol);
}
fir::GlobalOp fir::FirOpBuilder::getNamedGlobal(mlir::ModuleOp modOp,
llvm::StringRef name) {
return modOp.lookupSymbol<fir::GlobalOp>(name);
}
mlir::Type fir::FirOpBuilder::getRefType(mlir::Type eleTy) {
assert(!eleTy.isa<fir::ReferenceType>() && "cannot be a reference type");
return fir::ReferenceType::get(eleTy);
}
mlir::Type fir::FirOpBuilder::getVarLenSeqTy(mlir::Type eleTy, unsigned rank) {
fir::SequenceType::Shape shape(rank, fir::SequenceType::getUnknownExtent());
return fir::SequenceType::get(shape, eleTy);
}
mlir::Type fir::FirOpBuilder::getRealType(int kind) {
switch (kindMap.getRealTypeID(kind)) {
case llvm::Type::TypeID::HalfTyID:
return mlir::FloatType::getF16(getContext());
case llvm::Type::TypeID::FloatTyID:
return mlir::FloatType::getF32(getContext());
case llvm::Type::TypeID::DoubleTyID:
return mlir::FloatType::getF64(getContext());
case llvm::Type::TypeID::X86_FP80TyID:
return mlir::FloatType::getF80(getContext());
case llvm::Type::TypeID::FP128TyID:
return mlir::FloatType::getF128(getContext());
default:
fir::emitFatalError(UnknownLoc::get(getContext()),
"unsupported type !fir.real<kind>");
}
}
mlir::Value fir::FirOpBuilder::createNullConstant(mlir::Location loc,
mlir::Type ptrType) {
auto ty = ptrType ? ptrType : getRefType(getNoneType());
return create<fir::ZeroOp>(loc, ty);
}
mlir::Value fir::FirOpBuilder::createIntegerConstant(mlir::Location loc,
mlir::Type ty,
std::int64_t cst) {
return create<mlir::arith::ConstantOp>(loc, ty, getIntegerAttr(ty, cst));
}
mlir::Value
fir::FirOpBuilder::createRealConstant(mlir::Location loc, mlir::Type fltTy,
llvm::APFloat::integerPart val) {
auto apf = [&]() -> llvm::APFloat {
if (auto ty = fltTy.dyn_cast<fir::RealType>())
return llvm::APFloat(kindMap.getFloatSemantics(ty.getFKind()), val);
if (fltTy.isF16())
return llvm::APFloat(llvm::APFloat::IEEEhalf(), val);
if (fltTy.isBF16())
return llvm::APFloat(llvm::APFloat::BFloat(), val);
if (fltTy.isF32())
return llvm::APFloat(llvm::APFloat::IEEEsingle(), val);
if (fltTy.isF64())
return llvm::APFloat(llvm::APFloat::IEEEdouble(), val);
if (fltTy.isF80())
return llvm::APFloat(llvm::APFloat::x87DoubleExtended(), val);
if (fltTy.isF128())
return llvm::APFloat(llvm::APFloat::IEEEquad(), val);
llvm_unreachable("unhandled MLIR floating-point type");
};
return createRealConstant(loc, fltTy, apf());
}
mlir::Value fir::FirOpBuilder::createRealConstant(mlir::Location loc,
mlir::Type fltTy,
const llvm::APFloat &value) {
if (fltTy.isa<mlir::FloatType>()) {
auto attr = getFloatAttr(fltTy, value);
return create<mlir::arith::ConstantOp>(loc, fltTy, attr);
}
llvm_unreachable("should use builtin floating-point type");
}
static llvm::SmallVector<mlir::Value>
elideExtentsAlreadyInType(mlir::Type type, mlir::ValueRange shape) {
auto arrTy = type.dyn_cast<fir::SequenceType>();
if (shape.empty() || !arrTy)
return {};
// elide the constant dimensions before construction
assert(shape.size() == arrTy.getDimension());
llvm::SmallVector<mlir::Value> dynamicShape;
auto typeShape = arrTy.getShape();
for (unsigned i = 0, end = arrTy.getDimension(); i < end; ++i)
if (typeShape[i] == fir::SequenceType::getUnknownExtent())
dynamicShape.push_back(shape[i]);
return dynamicShape;
}
static llvm::SmallVector<mlir::Value>
elideLengthsAlreadyInType(mlir::Type type, mlir::ValueRange lenParams) {
if (lenParams.empty())
return {};
if (auto arrTy = type.dyn_cast<fir::SequenceType>())
type = arrTy.getEleTy();
if (fir::hasDynamicSize(type))
return lenParams;
return {};
}
/// Allocate a local variable.
/// A local variable ought to have a name in the source code.
mlir::Value fir::FirOpBuilder::allocateLocal(
mlir::Location loc, mlir::Type ty, llvm::StringRef uniqName,
llvm::StringRef name, bool pinned, llvm::ArrayRef<mlir::Value> shape,
llvm::ArrayRef<mlir::Value> lenParams, bool asTarget) {
// Convert the shape extents to `index`, as needed.
llvm::SmallVector<mlir::Value> indices;
llvm::SmallVector<mlir::Value> elidedShape =
elideExtentsAlreadyInType(ty, shape);
llvm::SmallVector<mlir::Value> elidedLenParams =
elideLengthsAlreadyInType(ty, lenParams);
auto idxTy = getIndexType();
llvm::for_each(elidedShape, [&](mlir::Value sh) {
indices.push_back(createConvert(loc, idxTy, sh));
});
// Add a target attribute, if needed.
llvm::SmallVector<mlir::NamedAttribute> attrs;
if (asTarget)
attrs.emplace_back(
mlir::StringAttr::get(getContext(), fir::getTargetAttrName()),
getUnitAttr());
// Create the local variable.
if (name.empty()) {
if (uniqName.empty())
return create<fir::AllocaOp>(loc, ty, pinned, elidedLenParams, indices,
attrs);
return create<fir::AllocaOp>(loc, ty, uniqName, pinned, elidedLenParams,
indices, attrs);
}
return create<fir::AllocaOp>(loc, ty, uniqName, name, pinned, elidedLenParams,
indices, attrs);
}
mlir::Value fir::FirOpBuilder::allocateLocal(
mlir::Location loc, mlir::Type ty, llvm::StringRef uniqName,
llvm::StringRef name, llvm::ArrayRef<mlir::Value> shape,
llvm::ArrayRef<mlir::Value> lenParams, bool asTarget) {
return allocateLocal(loc, ty, uniqName, name, /*pinned=*/false, shape,
lenParams, asTarget);
}
/// Get the block for adding Allocas.
mlir::Block *fir::FirOpBuilder::getAllocaBlock() {
// auto iface =
// getRegion().getParentOfType<mlir::omp::OutlineableOpenMPOpInterface>();
// return iface ? iface.getAllocaBlock() : getEntryBlock();
return getEntryBlock();
}
/// Create a temporary variable on the stack. Anonymous temporaries have no
/// `name` value. Temporaries do not require a uniqued name.
mlir::Value
fir::FirOpBuilder::createTemporary(mlir::Location loc, mlir::Type type,
llvm::StringRef name, mlir::ValueRange shape,
mlir::ValueRange lenParams,
llvm::ArrayRef<mlir::NamedAttribute> attrs) {
llvm::SmallVector<mlir::Value> dynamicShape =
elideExtentsAlreadyInType(type, shape);
llvm::SmallVector<mlir::Value> dynamicLength =
elideLengthsAlreadyInType(type, lenParams);
InsertPoint insPt;
const bool hoistAlloc = dynamicShape.empty() && dynamicLength.empty();
if (hoistAlloc) {
insPt = saveInsertionPoint();
setInsertionPointToStart(getAllocaBlock());
}
// If the alloca is inside an OpenMP Op which will be outlined then pin the
// alloca here.
const bool pinned =
getRegion().getParentOfType<mlir::omp::OutlineableOpenMPOpInterface>();
assert(!type.isa<fir::ReferenceType>() && "cannot be a reference");
auto ae =
create<fir::AllocaOp>(loc, type, /*unique_name=*/llvm::StringRef{}, name,
pinned, dynamicLength, dynamicShape, attrs);
if (hoistAlloc)
restoreInsertionPoint(insPt);
return ae;
}
/// Create a global variable in the (read-only) data section. A global variable
/// must have a unique name to identify and reference it.
fir::GlobalOp
fir::FirOpBuilder::createGlobal(mlir::Location loc, mlir::Type type,
llvm::StringRef name, mlir::StringAttr linkage,
mlir::Attribute value, bool isConst) {
auto module = getModule();
auto insertPt = saveInsertionPoint();
if (auto glob = module.lookupSymbol<fir::GlobalOp>(name))
return glob;
setInsertionPoint(module.getBody(), module.getBody()->end());
auto glob = create<fir::GlobalOp>(loc, name, isConst, type, value, linkage);
restoreInsertionPoint(insertPt);
return glob;
}
fir::GlobalOp fir::FirOpBuilder::createGlobal(
mlir::Location loc, mlir::Type type, llvm::StringRef name, bool isConst,
std::function<void(FirOpBuilder &)> bodyBuilder, mlir::StringAttr linkage) {
auto module = getModule();
auto insertPt = saveInsertionPoint();
if (auto glob = module.lookupSymbol<fir::GlobalOp>(name))
return glob;
setInsertionPoint(module.getBody(), module.getBody()->end());
auto glob = create<fir::GlobalOp>(loc, name, isConst, type, mlir::Attribute{},
linkage);
auto &region = glob.getRegion();
region.push_back(new mlir::Block);
auto &block = glob.getRegion().back();
setInsertionPointToStart(&block);
bodyBuilder(*this);
restoreInsertionPoint(insertPt);
return glob;
}
mlir::Value
fir::FirOpBuilder::convertWithSemantics(mlir::Location loc, mlir::Type toTy,
mlir::Value val,
bool allowCharacterConversion) {
assert(toTy && "store location must be typed");
auto fromTy = val.getType();
if (fromTy == toTy)
return val;
fir::factory::Complex helper{*this, loc};
if ((fir::isa_real(fromTy) || fir::isa_integer(fromTy)) &&
fir::isa_complex(toTy)) {
// imaginary part is zero
auto eleTy = helper.getComplexPartType(toTy);
auto cast = createConvert(loc, eleTy, val);
llvm::APFloat zero{
kindMap.getFloatSemantics(toTy.cast<fir::ComplexType>().getFKind()), 0};
auto imag = createRealConstant(loc, eleTy, zero);
return helper.createComplex(toTy, cast, imag);
}
if (fir::isa_complex(fromTy) &&
(fir::isa_integer(toTy) || fir::isa_real(toTy))) {
// drop the imaginary part
auto rp = helper.extractComplexPart(val, /*isImagPart=*/false);
return createConvert(loc, toTy, rp);
}
if (allowCharacterConversion) {
if (fromTy.isa<fir::BoxCharType>()) {
// Extract the address of the character string and pass it
fir::factory::CharacterExprHelper charHelper{*this, loc};
std::pair<mlir::Value, mlir::Value> unboxchar =
charHelper.createUnboxChar(val);
return createConvert(loc, toTy, unboxchar.first);
}
if (auto boxType = toTy.dyn_cast<fir::BoxCharType>()) {
// Extract the address of the actual argument and create a boxed
// character value with an undefined length
// TODO: We should really calculate the total size of the actual
// argument in characters and use it as the length of the string
auto refType = getRefType(boxType.getEleTy());
mlir::Value charBase = createConvert(loc, refType, val);
mlir::Value unknownLen = create<fir::UndefOp>(loc, getIndexType());
fir::factory::CharacterExprHelper charHelper{*this, loc};
return charHelper.createEmboxChar(charBase, unknownLen);
}
}
if (fir::isa_ref_type(toTy) && fir::isa_box_type(fromTy)) {
// Call is expecting a raw data pointer, not a box. Get the data pointer out
// of the box and pass that.
assert((fir::unwrapRefType(toTy) ==
fir::unwrapRefType(fir::unwrapPassByRefType(fromTy)) &&
"element types expected to match"));
return create<fir::BoxAddrOp>(loc, toTy, val);
}
return createConvert(loc, toTy, val);
}
mlir::Value fir::FirOpBuilder::createConvert(mlir::Location loc,
mlir::Type toTy, mlir::Value val) {
if (val.getType() != toTy) {
assert(!fir::isa_derived(toTy));
return create<fir::ConvertOp>(loc, toTy, val);
}
return val;
}
fir::StringLitOp fir::FirOpBuilder::createStringLitOp(mlir::Location loc,
llvm::StringRef data) {
auto type = fir::CharacterType::get(getContext(), 1, data.size());
auto strAttr = mlir::StringAttr::get(getContext(), data);
auto valTag = mlir::StringAttr::get(getContext(), fir::StringLitOp::value());
mlir::NamedAttribute dataAttr(valTag, strAttr);
auto sizeTag = mlir::StringAttr::get(getContext(), fir::StringLitOp::size());
mlir::NamedAttribute sizeAttr(sizeTag, getI64IntegerAttr(data.size()));
llvm::SmallVector<mlir::NamedAttribute> attrs{dataAttr, sizeAttr};
return create<fir::StringLitOp>(loc, llvm::ArrayRef<mlir::Type>{type},
llvm::None, attrs);
}
mlir::Value fir::FirOpBuilder::genShape(mlir::Location loc,
llvm::ArrayRef<mlir::Value> exts) {
auto shapeType = fir::ShapeType::get(getContext(), exts.size());
return create<fir::ShapeOp>(loc, shapeType, exts);
}
mlir::Value fir::FirOpBuilder::genShape(mlir::Location loc,
llvm::ArrayRef<mlir::Value> shift,
llvm::ArrayRef<mlir::Value> exts) {
auto shapeType = fir::ShapeShiftType::get(getContext(), exts.size());
llvm::SmallVector<mlir::Value> shapeArgs;
auto idxTy = getIndexType();
for (auto [lbnd, ext] : llvm::zip(shift, exts)) {
auto lb = createConvert(loc, idxTy, lbnd);
shapeArgs.push_back(lb);
shapeArgs.push_back(ext);
}
return create<fir::ShapeShiftOp>(loc, shapeType, shapeArgs);
}
mlir::Value fir::FirOpBuilder::genShape(mlir::Location loc,
const fir::AbstractArrayBox &arr) {
if (arr.lboundsAllOne())
return genShape(loc, arr.getExtents());
return genShape(loc, arr.getLBounds(), arr.getExtents());
}
mlir::Value fir::FirOpBuilder::createShape(mlir::Location loc,
const fir::ExtendedValue &exv) {
return exv.match(
[&](const fir::ArrayBoxValue &box) { return genShape(loc, box); },
[&](const fir::CharArrayBoxValue &box) { return genShape(loc, box); },
[&](const fir::BoxValue &box) -> mlir::Value {
if (!box.getLBounds().empty()) {
auto shiftType =
fir::ShiftType::get(getContext(), box.getLBounds().size());
return create<fir::ShiftOp>(loc, shiftType, box.getLBounds());
}
return {};
},
[&](const fir::MutableBoxValue &) -> mlir::Value {
// MutableBoxValue must be read into another category to work with them
// outside of allocation/assignment contexts.
fir::emitFatalError(loc, "createShape on MutableBoxValue");
},
[&](auto) -> mlir::Value { fir::emitFatalError(loc, "not an array"); });
}
mlir::Value fir::FirOpBuilder::createBox(mlir::Location loc,
const fir::ExtendedValue &exv) {
mlir::Value itemAddr = fir::getBase(exv);
if (itemAddr.getType().isa<fir::BoxType>())
return itemAddr;
auto elementType = fir::dyn_cast_ptrEleTy(itemAddr.getType());
if (!elementType) {
mlir::emitError(loc, "internal: expected a memory reference type ")
<< itemAddr.getType();
llvm_unreachable("not a memory reference type");
}
mlir::Type boxTy = fir::BoxType::get(elementType);
return exv.match(
[&](const fir::ArrayBoxValue &box) -> mlir::Value {
mlir::Value s = createShape(loc, exv);
return create<fir::EmboxOp>(loc, boxTy, itemAddr, s);
},
[&](const fir::CharArrayBoxValue &box) -> mlir::Value {
mlir::Value s = createShape(loc, exv);
if (fir::factory::CharacterExprHelper::hasConstantLengthInType(exv))
return create<fir::EmboxOp>(loc, boxTy, itemAddr, s);
mlir::Value emptySlice;
llvm::SmallVector<mlir::Value> lenParams{box.getLen()};
return create<fir::EmboxOp>(loc, boxTy, itemAddr, s, emptySlice,
lenParams);
},
[&](const fir::CharBoxValue &box) -> mlir::Value {
if (fir::factory::CharacterExprHelper::hasConstantLengthInType(exv))
return create<fir::EmboxOp>(loc, boxTy, itemAddr);
mlir::Value emptyShape, emptySlice;
llvm::SmallVector<mlir::Value> lenParams{box.getLen()};
return create<fir::EmboxOp>(loc, boxTy, itemAddr, emptyShape,
emptySlice, lenParams);
},
[&](const fir::MutableBoxValue &x) -> mlir::Value {
return create<fir::LoadOp>(
loc, fir::factory::getMutableIRBox(*this, loc, x));
},
// UnboxedValue, ProcBoxValue or BoxValue.
[&](const auto &) -> mlir::Value {
return create<fir::EmboxOp>(loc, boxTy, itemAddr);
});
}
static mlir::Value
genNullPointerComparison(fir::FirOpBuilder &builder, mlir::Location loc,
mlir::Value addr,
mlir::arith::CmpIPredicate condition) {
auto intPtrTy = builder.getIntPtrType();
auto ptrToInt = builder.createConvert(loc, intPtrTy, addr);
auto c0 = builder.createIntegerConstant(loc, intPtrTy, 0);
return builder.create<mlir::arith::CmpIOp>(loc, condition, ptrToInt, c0);
}
mlir::Value fir::FirOpBuilder::genIsNotNull(mlir::Location loc,
mlir::Value addr) {
return genNullPointerComparison(*this, loc, addr,
mlir::arith::CmpIPredicate::ne);
}
mlir::Value fir::FirOpBuilder::genIsNull(mlir::Location loc, mlir::Value addr) {
return genNullPointerComparison(*this, loc, addr,
mlir::arith::CmpIPredicate::eq);
}
//===--------------------------------------------------------------------===//
// ExtendedValue inquiry helper implementation
//===--------------------------------------------------------------------===//
mlir::Value fir::factory::readCharLen(fir::FirOpBuilder &builder,
mlir::Location loc,
const fir::ExtendedValue &box) {
return box.match(
[&](const fir::CharBoxValue &x) -> mlir::Value { return x.getLen(); },
[&](const fir::CharArrayBoxValue &x) -> mlir::Value {
return x.getLen();
},
[&](const fir::BoxValue &x) -> mlir::Value {
assert(x.isCharacter());
if (!x.getExplicitParameters().empty())
return x.getExplicitParameters()[0];
return fir::factory::CharacterExprHelper{builder, loc}
.readLengthFromBox(x.getAddr());
},
[&](const fir::MutableBoxValue &) -> mlir::Value {
// MutableBoxValue must be read into another category to work with them
// outside of allocation/assignment contexts.
fir::emitFatalError(loc, "readCharLen on MutableBoxValue");
},
[&](const auto &) -> mlir::Value {
fir::emitFatalError(
loc, "Character length inquiry on a non-character entity");
});
}
mlir::Value fir::factory::readExtent(fir::FirOpBuilder &builder,
mlir::Location loc,
const fir::ExtendedValue &box,
unsigned dim) {
assert(box.rank() > dim);
return box.match(
[&](const fir::ArrayBoxValue &x) -> mlir::Value {
return x.getExtents()[dim];
},
[&](const fir::CharArrayBoxValue &x) -> mlir::Value {
return x.getExtents()[dim];
},
[&](const fir::BoxValue &x) -> mlir::Value {
if (!x.getExplicitExtents().empty())
return x.getExplicitExtents()[dim];
auto idxTy = builder.getIndexType();
auto dimVal = builder.createIntegerConstant(loc, idxTy, dim);
return builder
.create<fir::BoxDimsOp>(loc, idxTy, idxTy, idxTy, x.getAddr(),
dimVal)
.getResult(1);
},
[&](const fir::MutableBoxValue &x) -> mlir::Value {
// MutableBoxValue must be read into another category to work with them
// outside of allocation/assignment contexts.
fir::emitFatalError(loc, "readExtents on MutableBoxValue");
},
[&](const auto &) -> mlir::Value {
fir::emitFatalError(loc, "extent inquiry on scalar");
});
}
llvm::SmallVector<mlir::Value>
fir::factory::readExtents(fir::FirOpBuilder &builder, mlir::Location loc,
const fir::BoxValue &box) {
llvm::SmallVector<mlir::Value> result;
auto explicitExtents = box.getExplicitExtents();
if (!explicitExtents.empty()) {
result.append(explicitExtents.begin(), explicitExtents.end());
return result;
}
auto rank = box.rank();
auto idxTy = builder.getIndexType();
for (decltype(rank) dim = 0; dim < rank; ++dim) {
auto dimVal = builder.createIntegerConstant(loc, idxTy, dim);
auto dimInfo = builder.create<fir::BoxDimsOp>(loc, idxTy, idxTy, idxTy,
box.getAddr(), dimVal);
result.emplace_back(dimInfo.getResult(1));
}
return result;
}
llvm::SmallVector<mlir::Value>
fir::factory::getExtents(fir::FirOpBuilder &builder, mlir::Location loc,
const fir::ExtendedValue &box) {
return box.match(
[&](const fir::ArrayBoxValue &x) -> llvm::SmallVector<mlir::Value> {
return {x.getExtents().begin(), x.getExtents().end()};
},
[&](const fir::CharArrayBoxValue &x) -> llvm::SmallVector<mlir::Value> {
return {x.getExtents().begin(), x.getExtents().end()};
},
[&](const fir::BoxValue &x) -> llvm::SmallVector<mlir::Value> {
return fir::factory::readExtents(builder, loc, x);
},
[&](const fir::MutableBoxValue &x) -> llvm::SmallVector<mlir::Value> {
auto load = fir::factory::genMutableBoxRead(builder, loc, x);
return fir::factory::getExtents(builder, loc, load);
},
[&](const auto &) -> llvm::SmallVector<mlir::Value> { return {}; });
}
fir::ExtendedValue fir::factory::readBoxValue(fir::FirOpBuilder &builder,
mlir::Location loc,
const fir::BoxValue &box) {
assert(!box.isUnlimitedPolymorphic() && !box.hasAssumedRank() &&
"cannot read unlimited polymorphic or assumed rank fir.box");
auto addr =
builder.create<fir::BoxAddrOp>(loc, box.getMemTy(), box.getAddr());
if (box.isCharacter()) {
auto len = fir::factory::readCharLen(builder, loc, box);
if (box.rank() == 0)
return fir::CharBoxValue(addr, len);
return fir::CharArrayBoxValue(addr, len,
fir::factory::readExtents(builder, loc, box),
box.getLBounds());
}
if (box.isDerivedWithLengthParameters())
TODO(loc, "read fir.box with length parameters");
if (box.rank() == 0)
return addr;
return fir::ArrayBoxValue(addr, fir::factory::readExtents(builder, loc, box),
box.getLBounds());
}
std::string fir::factory::uniqueCGIdent(llvm::StringRef prefix,
llvm::StringRef name) {
// For "long" identifiers use a hash value
if (name.size() > nameLengthHashSize) {
llvm::MD5 hash;
hash.update(name);
llvm::MD5::MD5Result result;
hash.final(result);
llvm::SmallString<32> str;
llvm::MD5::stringifyResult(result, str);
std::string hashName = prefix.str();
hashName.append(".").append(str.c_str());
return fir::NameUniquer::doGenerated(hashName);
}
// "Short" identifiers use a reversible hex string
std::string nm = prefix.str();
return fir::NameUniquer::doGenerated(
nm.append(".").append(llvm::toHex(name)));
}
mlir::Value fir::factory::locationToFilename(fir::FirOpBuilder &builder,
mlir::Location loc) {
if (auto flc = loc.dyn_cast<mlir::FileLineColLoc>()) {
// must be encoded as asciiz, C string
auto fn = flc.getFilename().str() + '\0';
return fir::getBase(createStringLiteral(builder, loc, fn));
}
return builder.createNullConstant(loc);
}
mlir::Value fir::factory::locationToLineNo(fir::FirOpBuilder &builder,
mlir::Location loc,
mlir::Type type) {
if (auto flc = loc.dyn_cast<mlir::FileLineColLoc>())
return builder.createIntegerConstant(loc, type, flc.getLine());
return builder.createIntegerConstant(loc, type, 0);
}
fir::ExtendedValue fir::factory::createStringLiteral(fir::FirOpBuilder &builder,
mlir::Location loc,
llvm::StringRef str) {
std::string globalName = fir::factory::uniqueCGIdent("cl", str);
auto type = fir::CharacterType::get(builder.getContext(), 1, str.size());
auto global = builder.getNamedGlobal(globalName);
if (!global)
global = builder.createGlobalConstant(
loc, type, globalName,
[&](fir::FirOpBuilder &builder) {
auto stringLitOp = builder.createStringLitOp(loc, str);
builder.create<fir::HasValueOp>(loc, stringLitOp);
},
builder.createLinkOnceLinkage());
auto addr = builder.create<fir::AddrOfOp>(loc, global.resultType(),
global.getSymbol());
auto len = builder.createIntegerConstant(
loc, builder.getCharacterLengthType(), str.size());
return fir::CharBoxValue{addr, len};
}
llvm::SmallVector<mlir::Value>
fir::factory::createExtents(fir::FirOpBuilder &builder, mlir::Location loc,
fir::SequenceType seqTy) {
llvm::SmallVector<mlir::Value> extents;
auto idxTy = builder.getIndexType();
for (auto ext : seqTy.getShape())
extents.emplace_back(
ext == fir::SequenceType::getUnknownExtent()
? builder.create<fir::UndefOp>(loc, idxTy).getResult()
: builder.createIntegerConstant(loc, idxTy, ext));
return extents;
}
mlir::TupleType
fir::factory::getRaggedArrayHeaderType(fir::FirOpBuilder &builder) {
mlir::IntegerType i64Ty = builder.getIntegerType(64);
auto arrTy = fir::SequenceType::get(builder.getIntegerType(8), 1);
auto buffTy = fir::HeapType::get(arrTy);
auto extTy = fir::SequenceType::get(i64Ty, 1);
auto shTy = fir::HeapType::get(extTy);
return mlir::TupleType::get(builder.getContext(), {i64Ty, buffTy, shTy});
}
mlir::Value fir::factory::createZeroValue(fir::FirOpBuilder &builder,
mlir::Location loc, mlir::Type type) {
mlir::Type i1 = builder.getIntegerType(1);
if (type.isa<fir::LogicalType>() || type == i1)
return builder.createConvert(loc, type, builder.createBool(loc, false));
if (fir::isa_integer(type))
return builder.createIntegerConstant(loc, type, 0);
if (fir::isa_real(type))
return builder.createRealZeroConstant(loc, type);
if (fir::isa_complex(type)) {
fir::factory::Complex complexHelper(builder, loc);
mlir::Type partType = complexHelper.getComplexPartType(type);
mlir::Value zeroPart = builder.createRealZeroConstant(loc, partType);
return complexHelper.createComplex(type, zeroPart, zeroPart);
}
fir::emitFatalError(loc, "internal: trying to generate zero value of non "
"numeric or logical type");
}
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