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[flang][NFC] Remove old RTBuilder.h

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RTBuilder.h has been moved in `flang/Optimizer/Builder/Runtime/RTBuilder.h`.
This duplicate is not necessary anymore.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D121317
This commit is contained in:
Valentin Clement 2022-03-09 20:57:09 +01:00
parent 5105c7cd78
commit 1b3fd28c6e
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GPG Key ID: 086D54783C928776
2 changed files with 2 additions and 289 deletions
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287
flang/lib/Lower/RTBuilder.h
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@ -1,287 +0,0 @@
//===-- RTBuilder.h ---------------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file defines some C++17 template classes that are used to convert the
/// signatures of plain old C functions into a model that can be used to
/// generate MLIR calls to those functions. This can be used to autogenerate
/// tables at compiler compile-time to call runtime support code.
///
//===----------------------------------------------------------------------===//
#ifndef FORTRAN_LOWER_RTBUILDER_H
#define FORTRAN_LOWER_RTBUILDER_H
#include "flang/Lower/ConvertType.h"
#include "flang/Optimizer/Dialect/FIRType.h"
#include "mlir/IR/BuiltinTypes.h"
#include "mlir/IR/MLIRContext.h"
#include "llvm/ADT/SmallVector.h"
#include <functional>
// List the runtime headers we want to be able to dissect
#include "flang/Runtime/io-api.h"
// Incomplete type indicating C99 complex ABI in interfaces. Beware, _Complex
// and std::complex are layout compatible, but not compatible in all ABI call
// interface (e.g. X86 32 bits). _Complex is not standard C++, so do not use
// it here.
struct c_float_complex_t;
struct c_double_complex_t;
namespace Fortran::lower {
using TypeBuilderFunc = mlir::Type (*)(mlir::MLIRContext *);
using FuncTypeBuilderFunc = mlir::FunctionType (*)(mlir::MLIRContext *);
//===----------------------------------------------------------------------===//
// Type builder models
//===----------------------------------------------------------------------===//
/// Return a function that returns the type signature model for the type `T`
/// when provided an MLIRContext*. This allows one to translate C(++) function
/// signatures from runtime header files to MLIR signatures into a static table
/// at compile-time.
///
/// For example, when `T` is `int`, return a function that returns the MLIR
/// standard type `i32` when `sizeof(int)` is 4.
template <typename T>
static constexpr TypeBuilderFunc getModel();
template <>
constexpr TypeBuilderFunc getModel<int>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::IntegerType::get(context, 8 * sizeof(int));
};
}
template <>
constexpr TypeBuilderFunc getModel<int &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
TypeBuilderFunc f{getModel<int>()};
return fir::ReferenceType::get(f(context));
};
}
template <>
constexpr TypeBuilderFunc getModel<Fortran::runtime::io::Iostat>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::IntegerType::get(context,
8 * sizeof(Fortran::runtime::io::Iostat));
};
}
template <>
constexpr TypeBuilderFunc getModel<char *>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ReferenceType::get(mlir::IntegerType::get(context, 8));
};
}
template <>
constexpr TypeBuilderFunc getModel<const char *>() {
return getModel<char *>();
}
template <>
constexpr TypeBuilderFunc getModel<const char16_t *>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ReferenceType::get(mlir::IntegerType::get(context, 16));
};
}
template <>
constexpr TypeBuilderFunc getModel<const char32_t *>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ReferenceType::get(mlir::IntegerType::get(context, 32));
};
}
template <>
constexpr TypeBuilderFunc getModel<void **>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ReferenceType::get(
fir::PointerType::get(mlir::IntegerType::get(context, 8)));
};
}
template <>
constexpr TypeBuilderFunc getModel<std::int64_t>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::IntegerType::get(context, 64);
};
}
template <>
constexpr TypeBuilderFunc getModel<std::int64_t &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
TypeBuilderFunc f{getModel<std::int64_t>()};
return fir::ReferenceType::get(f(context));
};
}
template <>
constexpr TypeBuilderFunc getModel<std::size_t>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::IntegerType::get(context, 8 * sizeof(std::size_t));
};
}
template <>
constexpr TypeBuilderFunc getModel<Fortran::runtime::io::IoStatementState *>() {
return getModel<char *>();
}
template <>
constexpr TypeBuilderFunc getModel<double>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::FloatType::getF64(context);
};
}
template <>
constexpr TypeBuilderFunc getModel<double &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
TypeBuilderFunc f{getModel<double>()};
return fir::ReferenceType::get(f(context));
};
}
template <>
constexpr TypeBuilderFunc getModel<float>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::FloatType::getF32(context);
};
}
template <>
constexpr TypeBuilderFunc getModel<float &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
TypeBuilderFunc f{getModel<float>()};
return fir::ReferenceType::get(f(context));
};
}
template <>
constexpr TypeBuilderFunc getModel<bool>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::IntegerType::get(context, 1);
};
}
template <>
constexpr TypeBuilderFunc getModel<bool &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
TypeBuilderFunc f{getModel<bool>()};
return fir::ReferenceType::get(f(context));
};
}
template <>
constexpr TypeBuilderFunc getModel<c_float_complex_t>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ComplexType::get(context, sizeof(float));
};
}
template <>
constexpr TypeBuilderFunc getModel<c_double_complex_t>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::ComplexType::get(context, sizeof(double));
};
}
template <>
constexpr TypeBuilderFunc getModel<const Fortran::runtime::Descriptor &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return fir::BoxType::get(mlir::NoneType::get(context));
};
}
template <>
constexpr TypeBuilderFunc
getModel<const Fortran::runtime::io::NamelistGroup &>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
// FIXME: a namelist group must be some well-defined data structure, use a
// tuple as a proxy for the moment
return mlir::TupleType::get(context);
};
}
template <>
constexpr TypeBuilderFunc getModel<void>() {
return [](mlir::MLIRContext *context) -> mlir::Type {
return mlir::NoneType::get(context);
};
}
template <typename...>
struct RuntimeTableKey;
template <typename RT, typename... ATs>
struct RuntimeTableKey<RT(ATs...)> {
static constexpr FuncTypeBuilderFunc getTypeModel() {
return [](mlir::MLIRContext *ctxt) {
TypeBuilderFunc ret = getModel<RT>();
std::array<TypeBuilderFunc, sizeof...(ATs)> args = {getModel<ATs>()...};
mlir::Type retTy = ret(ctxt);
llvm::SmallVector<mlir::Type, sizeof...(ATs)> argTys;
for (auto f : args)
argTys.push_back(f(ctxt));
return mlir::FunctionType::get(ctxt, argTys, {retTy});
};
}
};
//===----------------------------------------------------------------------===//
// Runtime table building (constexpr folded)
//===----------------------------------------------------------------------===//
template <char... Cs>
using RuntimeIdentifier = std::integer_sequence<char, Cs...>;
namespace details {
template <typename T, T... As, T... Bs>
static constexpr std::integer_sequence<T, As..., Bs...>
concat(std::integer_sequence<T, As...>, std::integer_sequence<T, Bs...>) {
return {};
}
template <typename T, T... As, T... Bs, typename... Cs>
static constexpr auto concat(std::integer_sequence<T, As...>,
std::integer_sequence<T, Bs...>, Cs...) {
return concat(std::integer_sequence<T, As..., Bs...>{}, Cs{}...);
}
template <typename T>
static constexpr std::integer_sequence<T> concat(std::integer_sequence<T>) {
return {};
}
template <typename T, T a>
static constexpr auto filterZero(std::integer_sequence<T, a>) {
if constexpr (a != 0) {
return std::integer_sequence<T, a>{};
} else {
return std::integer_sequence<T>{};
}
}
template <typename T, T... b>
static constexpr auto filter(std::integer_sequence<T, b...>) {
if constexpr (sizeof...(b) > 0) {
return details::concat(filterZero(std::integer_sequence<T, b>{})...);
} else {
return std::integer_sequence<T>{};
}
}
} // namespace details
template <typename...>
struct RuntimeTableEntry;
template <typename KT, char... Cs>
struct RuntimeTableEntry<RuntimeTableKey<KT>, RuntimeIdentifier<Cs...>> {
static constexpr FuncTypeBuilderFunc getTypeModel() {
return RuntimeTableKey<KT>::getTypeModel();
}
static constexpr const char name[sizeof...(Cs) + 1] = {Cs..., '\0'};
};
#undef E
#define E(L, I) (I < sizeof(L) / sizeof(*L) ? L[I] : 0)
#define QuoteKey(X) #X
#define MacroExpandKey(X) \
E(X, 0), E(X, 1), E(X, 2), E(X, 3), E(X, 4), E(X, 5), E(X, 6), E(X, 7), \
E(X, 8), E(X, 9), E(X, 10), E(X, 11), E(X, 12), E(X, 13), E(X, 14), \
E(X, 15), E(X, 16), E(X, 17), E(X, 18), E(X, 19), E(X, 20), E(X, 21), \
E(X, 22), E(X, 23), E(X, 24), E(X, 25), E(X, 26), E(X, 27), E(X, 28), \
E(X, 29), E(X, 30), E(X, 31), E(X, 32), E(X, 33), E(X, 34), E(X, 35), \
E(X, 36), E(X, 37), E(X, 38), E(X, 39), E(X, 40), E(X, 41), E(X, 42), \
E(X, 43), E(X, 44), E(X, 45), E(X, 46), E(X, 47), E(X, 48), E(X, 49)
#define ExpandKey(X) MacroExpandKey(QuoteKey(X))
#define FullSeq(X) std::integer_sequence<char, ExpandKey(X)>
#define AsSequence(X) decltype(Fortran::lower::details::filter(FullSeq(X){}))
#define mkKey(X) \
Fortran::lower::RuntimeTableEntry< \
Fortran::lower::RuntimeTableKey<decltype(X)>, AsSequence(X)>
} // namespace Fortran::lower
#endif // FORTRAN_LOWER_RTBUILDER_H

4
flang/unittests/Optimizer/RTBuilder.cpp
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@ -6,7 +6,7 @@
//
//===----------------------------------------------------------------------===//
#include "../../lib/Lower/RTBuilder.h"
#include "flang/Optimizer/Builder/Runtime/RTBuilder.h"
#include "gtest/gtest.h"
#include "flang/Optimizer/Support/InitFIR.h"
@ -25,7 +25,7 @@ TEST(RTBuilderTest, ComplexRuntimeInterface) {
mlir::MLIRContext ctx(registry);
fir::support::loadDialects(ctx);
mlir::Type c99_cacosf_signature{
Fortran::lower::RuntimeTableKey<decltype(c99_cacosf)>::getTypeModel()(
fir::runtime::RuntimeTableKey<decltype(c99_cacosf)>::getTypeModel()(
&ctx)};
auto c99_cacosf_funcTy = c99_cacosf_signature.cast<mlir::FunctionType>();
EXPECT_EQ(c99_cacosf_funcTy.getNumInputs(), 1u);