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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/Lower/FIRBuilder.h"
#include "SymbolMap.h"
#include "flang/Lower/Bridge.h"
#include "flang/Lower/ComplexExpr.h"
#include "flang/Lower/ConvertType.h"
#include "flang/Optimizer/Dialect/FIROpsSupport.h"
#include "flang/Semantics/symbol.h"
#include "llvm/Support/ErrorHandling.h"
mlir::FuncOp Fortran::lower::FirOpBuilder::createFunction(
mlir::Location loc, mlir::ModuleOp module, llvm::StringRef name,
mlir::FunctionType ty) {
return fir::createFuncOp(loc, module, name, ty);
}
mlir::FuncOp
Fortran::lower::FirOpBuilder::getNamedFunction(mlir::ModuleOp modOp,
llvm::StringRef name) {
return modOp.lookupSymbol<mlir::FuncOp>(name);
}
fir::GlobalOp
Fortran::lower::FirOpBuilder::getNamedGlobal(mlir::ModuleOp modOp,
llvm::StringRef name) {
return modOp.lookupSymbol<fir::GlobalOp>(name);
}
mlir::Type Fortran::lower::FirOpBuilder::getRefType(mlir::Type eleTy) {
assert(!eleTy.isa<fir::ReferenceType>());
return fir::ReferenceType::get(eleTy);
}
mlir::Value
Fortran::lower::FirOpBuilder::createNullConstant(mlir::Location loc) {
auto indexType = getIndexType();
auto zero = createIntegerConstant(loc, indexType, 0);
auto noneRefType = getRefType(getNoneType());
return createConvert(loc, noneRefType, zero);
}
mlir::Value Fortran::lower::FirOpBuilder::createIntegerConstant(
mlir::Location loc, mlir::Type ty, std::int64_t cst) {
return create<mlir::ConstantOp>(loc, ty, getIntegerAttr(ty, cst));
}
mlir::Value Fortran::lower::FirOpBuilder::createRealConstant(
mlir::Location loc, mlir::Type realType, const llvm::APFloat &val) {
return create<mlir::ConstantOp>(loc, realType, getFloatAttr(realType, val));
}
mlir::Value
Fortran::lower::FirOpBuilder::createRealZeroConstant(mlir::Location loc,
mlir::Type realType) {
mlir::Attribute attr;
if (auto firType = realType.dyn_cast<fir::RealType>()) {
attr = getFloatAttr(
realType,
llvm::APFloat(kindMap.getFloatSemantics(firType.getFKind()), 0));
} else { // mlir::FloatType.
attr = getZeroAttr(realType);
}
return create<mlir::ConstantOp>(loc, realType, attr);
}
mlir::Value Fortran::lower::FirOpBuilder::allocateLocal(
mlir::Location loc, mlir::Type ty, llvm::StringRef nm,
llvm::ArrayRef<mlir::Value> shape, bool asTarget) {
llvm::SmallVector<mlir::Value, 8> indices;
auto idxTy = getIndexType();
llvm::for_each(shape, [&](mlir::Value sh) {
indices.push_back(createConvert(loc, idxTy, sh));
});
llvm::SmallVector<mlir::NamedAttribute, 2> attrs;
if (asTarget)
attrs.emplace_back(mlir::Identifier::get("target", getContext()),
getUnitAttr());
return create<fir::AllocaOp>(loc, ty, nm, llvm::None, indices, attrs);
}
/// Create a temporary variable on the stack. Anonymous temporaries have no
/// `name` value.
mlir::Value Fortran::lower::FirOpBuilder::createTemporary(
mlir::Location loc, mlir::Type type, llvm::StringRef name,
llvm::ArrayRef<mlir::Value> shape) {
auto insPt = saveInsertionPoint();
if (shape.empty())
setInsertionPointToStart(getEntryBlock());
else
setInsertionPointAfter(shape.back().getDefiningOp());
assert(!type.isa<fir::ReferenceType>() && "cannot be a reference");
auto ae = create<fir::AllocaOp>(loc, type, name, llvm::None, shape);
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 Fortran::lower::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()->getTerminator());
auto glob = create<fir::GlobalOp>(loc, name, isConst, type, value, linkage);
restoreInsertionPoint(insertPt);
return glob;
}
fir::GlobalOp Fortran::lower::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()->getTerminator());
auto glob = create<fir::GlobalOp>(loc, name, isConst, type, mlir::Attribute{},
linkage);
auto ®ion = glob.getRegion();
region.push_back(new mlir::Block);
auto &block = glob.getRegion().back();
setInsertionPointToStart(&block);
bodyBuilder(*this);
restoreInsertionPoint(insertPt);
return glob;
}
mlir::Value Fortran::lower::FirOpBuilder::convertWithSemantics(
mlir::Location loc, mlir::Type toTy, mlir::Value val) {
assert(toTy && "store location must be typed");
auto fromTy = val.getType();
if (fromTy == toTy)
return val;
// FIXME: add a fir::is_integer() test
ComplexExprHelper helper{*this, loc};
if ((fir::isa_real(fromTy) || fromTy.isSignlessInteger()) &&
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::CplxType>().getFKind()), 0};
auto imag = createRealConstant(loc, eleTy, zero);
return helper.createComplex(toTy, cast, imag);
}
// FIXME: add a fir::is_integer() test
if (fir::isa_complex(fromTy) &&
(toTy.isSignlessInteger() || fir::isa_real(toTy))) {
// drop the imaginary part
auto rp = helper.extractComplexPart(val, /*isImagPart=*/false);
return createConvert(loc, toTy, rp);
}
return createConvert(loc, toTy, val);
}
mlir::Value Fortran::lower::FirOpBuilder::createConvert(mlir::Location loc,
mlir::Type toTy,
mlir::Value val) {
if (val.getType() != toTy)
return create<fir::ConvertOp>(loc, toTy, val);
return val;
}
fir::StringLitOp Fortran::lower::FirOpBuilder::createStringLit(
mlir::Location loc, mlir::Type eleTy, llvm::StringRef data) {
auto strAttr = mlir::StringAttr::get(data, getContext());
auto valTag = mlir::Identifier::get(fir::StringLitOp::value(), getContext());
mlir::NamedAttribute dataAttr(valTag, strAttr);
auto sizeTag = mlir::Identifier::get(fir::StringLitOp::size(), getContext());
mlir::NamedAttribute sizeAttr(sizeTag, getI64IntegerAttr(data.size()));
llvm::SmallVector<mlir::NamedAttribute, 2> attrs{dataAttr, sizeAttr};
auto arrTy =
fir::SequenceType::get(fir::SequenceType::Shape(1, data.size()), eleTy);
return create<fir::StringLitOp>(loc, llvm::ArrayRef<mlir::Type>{arrTy},
llvm::None, attrs);
}
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