forked from OSchip/llvm-project
130 lines
5.0 KiB
C++
130 lines
5.0 KiB
C++
//===-- CharacterRuntime.cpp -- runtime for CHARACTER type entities -------===//
|
|
//
|
|
// 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/CharacterRuntime.h"
|
|
#include "../../runtime/character.h"
|
|
#include "RTBuilder.h"
|
|
#include "flang/Lower/Bridge.h"
|
|
#include "flang/Lower/CharacterExpr.h"
|
|
#include "flang/Lower/FIRBuilder.h"
|
|
#include "mlir/Dialect/StandardOps/IR/Ops.h"
|
|
|
|
using namespace Fortran::runtime;
|
|
|
|
#define NAMIFY_HELPER(X) #X
|
|
#define NAMIFY(X) NAMIFY_HELPER(IONAME(X))
|
|
#define mkRTKey(X) mkKey(RTNAME(X))
|
|
|
|
namespace Fortran::lower {
|
|
/// Static table of CHARACTER runtime calls
|
|
///
|
|
/// This logical map contains the name and type builder function for each
|
|
/// runtime function listed in the tuple. This table is fully constructed at
|
|
/// compile-time. Use the `mkRTKey` macro to access the table.
|
|
static constexpr std::tuple<
|
|
mkRTKey(CharacterCompareScalar), mkRTKey(CharacterCompareScalar1),
|
|
mkRTKey(CharacterCompareScalar2), mkRTKey(CharacterCompareScalar4),
|
|
mkRTKey(CharacterCompare)>
|
|
newCharRTTable;
|
|
} // namespace Fortran::lower
|
|
|
|
using namespace Fortran::lower;
|
|
|
|
/// Helper function to retrieve the name of the IO function given the key `A`
|
|
template <typename A>
|
|
static constexpr const char *getName() {
|
|
return std::get<A>(newCharRTTable).name;
|
|
}
|
|
|
|
/// Helper function to retrieve the type model signature builder of the IO
|
|
/// function as defined by the key `A`
|
|
template <typename A>
|
|
static constexpr FuncTypeBuilderFunc getTypeModel() {
|
|
return std::get<A>(newCharRTTable).getTypeModel();
|
|
}
|
|
|
|
inline int64_t getLength(mlir::Type argTy) {
|
|
return argTy.cast<fir::SequenceType>().getShape()[0];
|
|
}
|
|
|
|
/// Get (or generate) the MLIR FuncOp for a given runtime function.
|
|
template <typename E>
|
|
static mlir::FuncOp getRuntimeFunc(mlir::Location loc,
|
|
Fortran::lower::FirOpBuilder &builder) {
|
|
auto name = getName<E>();
|
|
auto func = builder.getNamedFunction(name);
|
|
if (func)
|
|
return func;
|
|
auto funTy = getTypeModel<E>()(builder.getContext());
|
|
func = builder.createFunction(loc, name, funTy);
|
|
func.setAttr("fir.runtime", builder.getUnitAttr());
|
|
return func;
|
|
}
|
|
|
|
/// Helper function to recover the KIND from the FIR type.
|
|
static int discoverKind(mlir::Type ty) {
|
|
if (auto charTy = ty.dyn_cast<fir::CharacterType>())
|
|
return charTy.getFKind();
|
|
if (auto eleTy = fir::dyn_cast_ptrEleTy(ty))
|
|
return discoverKind(eleTy);
|
|
if (auto arrTy = ty.dyn_cast<fir::SequenceType>())
|
|
return discoverKind(arrTy.getEleTy());
|
|
if (auto boxTy = ty.dyn_cast<fir::BoxCharType>())
|
|
return discoverKind(boxTy.getEleTy());
|
|
if (auto boxTy = ty.dyn_cast<fir::BoxType>())
|
|
return discoverKind(boxTy.getEleTy());
|
|
llvm_unreachable("unexpected character type");
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Lower character operations
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
mlir::Value
|
|
Fortran::lower::genRawCharCompare(Fortran::lower::AbstractConverter &converter,
|
|
mlir::Location loc, mlir::CmpIPredicate cmp,
|
|
mlir::Value lhsBuff, mlir::Value lhsLen,
|
|
mlir::Value rhsBuff, mlir::Value rhsLen) {
|
|
auto &builder = converter.getFirOpBuilder();
|
|
mlir::FuncOp beginFunc;
|
|
switch (discoverKind(lhsBuff.getType())) {
|
|
case 1:
|
|
beginFunc = getRuntimeFunc<mkRTKey(CharacterCompareScalar1)>(loc, builder);
|
|
break;
|
|
case 2:
|
|
beginFunc = getRuntimeFunc<mkRTKey(CharacterCompareScalar2)>(loc, builder);
|
|
break;
|
|
case 4:
|
|
beginFunc = getRuntimeFunc<mkRTKey(CharacterCompareScalar4)>(loc, builder);
|
|
break;
|
|
default:
|
|
llvm_unreachable("runtime does not support CHARACTER KIND");
|
|
}
|
|
auto fTy = beginFunc.getType();
|
|
auto lptr = builder.createConvert(loc, fTy.getInput(0), lhsBuff);
|
|
auto llen = builder.createConvert(loc, fTy.getInput(2), lhsLen);
|
|
auto rptr = builder.createConvert(loc, fTy.getInput(1), rhsBuff);
|
|
auto rlen = builder.createConvert(loc, fTy.getInput(3), rhsLen);
|
|
llvm::SmallVector<mlir::Value, 4> args = {lptr, rptr, llen, rlen};
|
|
auto tri = builder.create<mlir::CallOp>(loc, beginFunc, args).getResult(0);
|
|
auto zero = builder.createIntegerConstant(loc, tri.getType(), 0);
|
|
return builder.create<mlir::CmpIOp>(loc, cmp, tri, zero);
|
|
}
|
|
|
|
mlir::Value
|
|
Fortran::lower::genBoxCharCompare(Fortran::lower::AbstractConverter &converter,
|
|
mlir::Location loc, mlir::CmpIPredicate cmp,
|
|
mlir::Value lhs, mlir::Value rhs) {
|
|
auto &builder = converter.getFirOpBuilder();
|
|
Fortran::lower::CharacterExprHelper helper{builder, loc};
|
|
auto lhsPair = helper.materializeCharacter(lhs);
|
|
auto rhsPair = helper.materializeCharacter(rhs);
|
|
return genRawCharCompare(converter, loc, cmp, lhsPair.first, lhsPair.second,
|
|
rhsPair.first, rhsPair.second);
|
|
}
|