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//===-- lib/Semantics/check-acc-structure.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
//
// OpenACC structure validity check list
// 1. invalid clauses on directive
// 2. invalid repeated clauses on directive
// 3. invalid nesting of regions
//
//===----------------------------------------------------------------------===//
#ifndef FORTRAN_SEMANTICS_CHECK_ACC_STRUCTURE_H_
#define FORTRAN_SEMANTICS_CHECK_ACC_STRUCTURE_H_
#include "flang/Common/enum-set.h"
#include "flang/Parser/parse-tree.h"
#include "flang/Semantics/semantics.h"
#include "llvm/Frontend/OpenACC/ACC.h.inc"
#include <unordered_map>
using AccDirectiveSet = Fortran::common::EnumSet<llvm::acc::Directive,
llvm::acc::Directive_enumSize>;
using AccClauseSet =
Fortran::common::EnumSet<llvm::acc::Clause, llvm::acc::Clause_enumSize>;
#define GEN_FLANG_DIRECTIVE_CLAUSE_SETS
#include "llvm/Frontend/OpenACC/ACC.cpp.inc"
namespace Fortran::semantics {
class AccStructureChecker : public virtual BaseChecker {
public:
AccStructureChecker(SemanticsContext &context) : context_{context} {}
// Construct and directives
void Enter(const parser::OpenACCBlockConstruct &);
void Leave(const parser::OpenACCBlockConstruct &);
void Enter(const parser::OpenACCCombinedConstruct &);
void Leave(const parser::OpenACCCombinedConstruct &);
void Enter(const parser::OpenACCLoopConstruct &);
void Leave(const parser::OpenACCLoopConstruct &);
void Enter(const parser::OpenACCRoutineConstruct &);
void Leave(const parser::OpenACCRoutineConstruct &);
void Enter(const parser::OpenACCStandaloneConstruct &);
void Leave(const parser::OpenACCStandaloneConstruct &);
void Enter(const parser::OpenACCStandaloneDeclarativeConstruct &);
void Leave(const parser::OpenACCStandaloneDeclarativeConstruct &);
// Clauses
void Leave(const parser::AccClauseList &);
void Enter(const parser::AccClause &);
void Enter(const parser::AccClause::Auto &);
void Enter(const parser::AccClause::Async &);
void Enter(const parser::AccClause::Attach &);
void Enter(const parser::AccClause::Bind &);
void Enter(const parser::AccClause::Capture &);
void Enter(const parser::AccClause::Create &);
void Enter(const parser::AccClause::Collapse &);
void Enter(const parser::AccClause::Copy &);
void Enter(const parser::AccClause::Copyin &);
void Enter(const parser::AccClause::Copyout &);
void Enter(const parser::AccClause::Default &);
void Enter(const parser::AccClause::DefaultAsync &);
void Enter(const parser::AccClause::Delete &);
void Enter(const parser::AccClause::Detach &);
void Enter(const parser::AccClause::Device &);
void Enter(const parser::AccClause::DeviceNum &);
void Enter(const parser::AccClause::DevicePtr &);
void Enter(const parser::AccClause::DeviceResident &);
void Enter(const parser::AccClause::DeviceType &);
void Enter(const parser::AccClause::Finalize &);
void Enter(const parser::AccClause::FirstPrivate &);
void Enter(const parser::AccClause::Gang &);
void Enter(const parser::AccClause::Host &);
void Enter(const parser::AccClause::If &);
void Enter(const parser::AccClause::IfPresent &);
void Enter(const parser::AccClause::Independent &);
void Enter(const parser::AccClause::Link &);
void Enter(const parser::AccClause::NoCreate &);
void Enter(const parser::AccClause::NoHost &);
void Enter(const parser::AccClause::NumGangs &);
void Enter(const parser::AccClause::NumWorkers &);
void Enter(const parser::AccClause::Present &);
void Enter(const parser::AccClause::Private &);
void Enter(const parser::AccClause::Read &);
void Enter(const parser::AccClause::Reduction &);
void Enter(const parser::AccClause::Self &);
void Enter(const parser::AccClause::Seq &);
void Enter(const parser::AccClause::Tile &);
void Enter(const parser::AccClause::UseDevice &);
void Enter(const parser::AccClause::Vector &);
void Enter(const parser::AccClause::VectorLength &);
void Enter(const parser::AccClause::Wait &);
void Enter(const parser::AccClause::Worker &);
void Enter(const parser::AccClause::Write &);
private:
#define GEN_FLANG_DIRECTIVE_CLAUSE_MAP
#include "llvm/Frontend/OpenACC/ACC.cpp.inc"
struct AccContext {
AccContext(parser::CharBlock source, llvm::acc::Directive d)
: directiveSource{source}, directive{d} {}
parser::CharBlock directiveSource{nullptr};
parser::CharBlock clauseSource{nullptr};
llvm::acc::Directive directive;
AccClauseSet allowedClauses{};
AccClauseSet allowedOnceClauses{};
AccClauseSet allowedExclusiveClauses{};
AccClauseSet requiredClauses{};
const parser::AccClause *clause{nullptr};
std::multimap<llvm::acc::Clause, const parser::AccClause *> clauseInfo;
std::list<llvm::acc::Clause> actualClauses;
};
// back() is the top of the stack
AccContext &GetContext() {
CHECK(!accContext_.empty());
return accContext_.back();
}
void SetContextClause(const parser::AccClause &clause) {
GetContext().clauseSource = clause.source;
GetContext().clause = &clause;
}
void SetContextClauseInfo(llvm::acc::Clause type) {
GetContext().clauseInfo.emplace(type, GetContext().clause);
}
void AddClauseToCrtContext(llvm::acc::Clause type) {
GetContext().actualClauses.push_back(type);
}
const parser::AccClause *FindClause(llvm::acc::Clause type) {
auto it{GetContext().clauseInfo.find(type)};
if (it != GetContext().clauseInfo.end()) {
return it->second;
}
return nullptr;
}
void PushContext(const parser::CharBlock &source, llvm::acc::Directive dir) {
accContext_.emplace_back(source, dir);
}
void SetClauseSets(llvm::acc::Directive dir) {
accContext_.back().allowedClauses = directiveClausesTable[dir].allowed;
accContext_.back().allowedOnceClauses =
directiveClausesTable[dir].allowedOnce;
accContext_.back().allowedExclusiveClauses =
directiveClausesTable[dir].allowedExclusive;
accContext_.back().requiredClauses =
directiveClausesTable[dir].requiredOneOf;
}
void PushContextAndClauseSets(
const parser::CharBlock &source, llvm::acc::Directive dir) {
PushContext(source, dir);
SetClauseSets(dir);
}
void SayNotMatching(const parser::CharBlock &, const parser::CharBlock &);
template <typename B> void CheckMatching(const B &beginDir, const B &endDir) {
const auto &begin{beginDir.v};
const auto &end{endDir.v};
if (begin != end) {
SayNotMatching(beginDir.source, endDir.source);
}
}
// Check that only clauses in set are after the specific clauses.
void CheckOnlyAllowedAfter(llvm::acc::Clause clause, AccClauseSet set);
void CheckRequireAtLeastOneOf();
void CheckAllowed(llvm::acc::Clause clause);
void CheckAtLeastOneClause();
void CheckNotAllowedIfClause(llvm::acc::Clause clause, AccClauseSet set);
std::string ContextDirectiveAsFortran();
void CheckNoBranching(const parser::Block &block,
const llvm::acc::Directive directive,
const parser::CharBlock &directiveSource) const;
void RequiresConstantPositiveParameter(
const llvm::acc::Clause &clause, const parser::ScalarIntConstantExpr &i);
void OptionalConstantPositiveParameter(const llvm::acc::Clause &clause,
const std::optional<parser::ScalarIntConstantExpr> &o);
SemanticsContext &context_;
std::vector<AccContext> accContext_; // used as a stack
std::string ClauseSetToString(const AccClauseSet set);
};
} // namespace Fortran::semantics
#endif // FORTRAN_SEMANTICS_CHECK_ACC_STRUCTURE_H_
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