Google Git
Sign in
llvm / llvm-project / 77ff6f7df8691a735a2dc979cdb44835dd2d41af / . / clang / lib / Parse / ParseOpenMP.cpp
blob: 613ad742c93f5832a62a9a76c2faf086f1365fcb [file] [log] [blame]
//===--- ParseOpenMP.cpp - OpenMP directives parsing ----------------------===//
//
// 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 implements parsing of all OpenMP directives and clauses.
///
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/AST/OpenMPClause.h"
#include "clang/AST/StmtOpenMP.h"
#include "clang/Basic/OpenMPKinds.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TokenKinds.h"
#include "clang/Parse/ParseDiagnostic.h"
#include "clang/Parse/Parser.h"
#include "clang/Parse/RAIIObjectsForParser.h"
#include "clang/Sema/Scope.h"
#include "llvm/ADT/PointerIntPair.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/UniqueVector.h"
#include "llvm/Frontend/OpenMP/OMPContext.h"
using namespace clang;
using namespace llvm::omp;
//===----------------------------------------------------------------------===//
// OpenMP declarative directives.
//===----------------------------------------------------------------------===//
namespace {
enum OpenMPDirectiveKindEx {
OMPD_cancellation = llvm::omp::Directive_enumSize + 1,
OMPD_data,
OMPD_declare,
OMPD_end,
OMPD_end_declare,
OMPD_enter,
OMPD_exit,
OMPD_point,
OMPD_reduction,
OMPD_target_enter,
OMPD_target_exit,
OMPD_update,
OMPD_distribute_parallel,
OMPD_teams_distribute_parallel,
OMPD_target_teams_distribute_parallel,
OMPD_mapper,
OMPD_variant,
OMPD_begin,
OMPD_begin_declare,
};
// Helper to unify the enum class OpenMPDirectiveKind with its extension
// the OpenMPDirectiveKindEx enum which allows to use them together as if they
// are unsigned values.
struct OpenMPDirectiveKindExWrapper {
OpenMPDirectiveKindExWrapper(unsigned Value) : Value(Value) {}
OpenMPDirectiveKindExWrapper(OpenMPDirectiveKind DK) : Value(unsigned(DK)) {}
bool operator==(OpenMPDirectiveKindExWrapper V) const {
return Value == V.Value;
}
bool operator!=(OpenMPDirectiveKindExWrapper V) const {
return Value != V.Value;
}
bool operator==(OpenMPDirectiveKind V) const { return Value == unsigned(V); }
bool operator!=(OpenMPDirectiveKind V) const { return Value != unsigned(V); }
bool operator<(OpenMPDirectiveKind V) const { return Value < unsigned(V); }
operator unsigned() const { return Value; }
operator OpenMPDirectiveKind() const { return OpenMPDirectiveKind(Value); }
unsigned Value;
};
class DeclDirectiveListParserHelper final {
SmallVector<Expr *, 4> Identifiers;
Parser *P;
OpenMPDirectiveKind Kind;
public:
DeclDirectiveListParserHelper(Parser *P, OpenMPDirectiveKind Kind)
: P(P), Kind(Kind) {}
void operator()(CXXScopeSpec &SS, DeclarationNameInfo NameInfo) {
ExprResult Res = P->getActions().ActOnOpenMPIdExpression(
P->getCurScope(), SS, NameInfo, Kind);
if (Res.isUsable())
Identifiers.push_back(Res.get());
}
llvm::ArrayRef<Expr *> getIdentifiers() const { return Identifiers; }
};
} // namespace
// Map token string to extended OMP token kind that are
// OpenMPDirectiveKind + OpenMPDirectiveKindEx.
static unsigned getOpenMPDirectiveKindEx(StringRef S) {
OpenMPDirectiveKindExWrapper DKind = getOpenMPDirectiveKind(S);
if (DKind != OMPD_unknown)
return DKind;
return llvm::StringSwitch<OpenMPDirectiveKindExWrapper>(S)
.Case("cancellation", OMPD_cancellation)
.Case("data", OMPD_data)
.Case("declare", OMPD_declare)
.Case("end", OMPD_end)
.Case("enter", OMPD_enter)
.Case("exit", OMPD_exit)
.Case("point", OMPD_point)
.Case("reduction", OMPD_reduction)
.Case("update", OMPD_update)
.Case("mapper", OMPD_mapper)
.Case("variant", OMPD_variant)
.Case("begin", OMPD_begin)
.Default(OMPD_unknown);
}
static OpenMPDirectiveKindExWrapper parseOpenMPDirectiveKind(Parser &P) {
// Array of foldings: F[i][0] F[i][1] ===> F[i][2].
// E.g.: OMPD_for OMPD_simd ===> OMPD_for_simd
// TODO: add other combined directives in topological order.
static const OpenMPDirectiveKindExWrapper F[][3] = {
{OMPD_begin, OMPD_declare, OMPD_begin_declare},
{OMPD_begin, OMPD_assumes, OMPD_begin_assumes},
{OMPD_end, OMPD_declare, OMPD_end_declare},
{OMPD_end, OMPD_assumes, OMPD_end_assumes},
{OMPD_cancellation, OMPD_point, OMPD_cancellation_point},
{OMPD_declare, OMPD_reduction, OMPD_declare_reduction},
{OMPD_declare, OMPD_mapper, OMPD_declare_mapper},
{OMPD_declare, OMPD_simd, OMPD_declare_simd},
{OMPD_declare, OMPD_target, OMPD_declare_target},
{OMPD_declare, OMPD_variant, OMPD_declare_variant},
{OMPD_begin_declare, OMPD_target, OMPD_begin_declare_target},
{OMPD_begin_declare, OMPD_variant, OMPD_begin_declare_variant},
{OMPD_end_declare, OMPD_variant, OMPD_end_declare_variant},
{OMPD_distribute, OMPD_parallel, OMPD_distribute_parallel},
{OMPD_distribute_parallel, OMPD_for, OMPD_distribute_parallel_for},
{OMPD_distribute_parallel_for, OMPD_simd,
OMPD_distribute_parallel_for_simd},
{OMPD_distribute, OMPD_simd, OMPD_distribute_simd},
{OMPD_end_declare, OMPD_target, OMPD_end_declare_target},
{OMPD_target, OMPD_data, OMPD_target_data},
{OMPD_target, OMPD_enter, OMPD_target_enter},
{OMPD_target, OMPD_exit, OMPD_target_exit},
{OMPD_target, OMPD_update, OMPD_target_update},
{OMPD_target_enter, OMPD_data, OMPD_target_enter_data},
{OMPD_target_exit, OMPD_data, OMPD_target_exit_data},
{OMPD_for, OMPD_simd, OMPD_for_simd},
{OMPD_parallel, OMPD_for, OMPD_parallel_for},
{OMPD_parallel_for, OMPD_simd, OMPD_parallel_for_simd},
{OMPD_parallel, OMPD_sections, OMPD_parallel_sections},
{OMPD_taskloop, OMPD_simd, OMPD_taskloop_simd},
{OMPD_target, OMPD_parallel, OMPD_target_parallel},
{OMPD_target, OMPD_simd, OMPD_target_simd},
{OMPD_target_parallel, OMPD_for, OMPD_target_parallel_for},
{OMPD_target_parallel_for, OMPD_simd, OMPD_target_parallel_for_simd},
{OMPD_teams, OMPD_distribute, OMPD_teams_distribute},
{OMPD_teams_distribute, OMPD_simd, OMPD_teams_distribute_simd},
{OMPD_teams_distribute, OMPD_parallel, OMPD_teams_distribute_parallel},
{OMPD_teams_distribute_parallel, OMPD_for,
OMPD_teams_distribute_parallel_for},
{OMPD_teams_distribute_parallel_for, OMPD_simd,
OMPD_teams_distribute_parallel_for_simd},
{OMPD_target, OMPD_teams, OMPD_target_teams},
{OMPD_target_teams, OMPD_distribute, OMPD_target_teams_distribute},
{OMPD_target_teams_distribute, OMPD_parallel,
OMPD_target_teams_distribute_parallel},
{OMPD_target_teams_distribute, OMPD_simd,
OMPD_target_teams_distribute_simd},
{OMPD_target_teams_distribute_parallel, OMPD_for,
OMPD_target_teams_distribute_parallel_for},
{OMPD_target_teams_distribute_parallel_for, OMPD_simd,
OMPD_target_teams_distribute_parallel_for_simd},
{OMPD_master, OMPD_taskloop, OMPD_master_taskloop},
{OMPD_master_taskloop, OMPD_simd, OMPD_master_taskloop_simd},
{OMPD_parallel, OMPD_master, OMPD_parallel_master},
{OMPD_parallel_master, OMPD_taskloop, OMPD_parallel_master_taskloop},
{OMPD_parallel_master_taskloop, OMPD_simd,
OMPD_parallel_master_taskloop_simd}};
enum { CancellationPoint = 0, DeclareReduction = 1, TargetData = 2 };
Token Tok = P.getCurToken();
OpenMPDirectiveKindExWrapper DKind =
Tok.isAnnotation()
? static_cast<unsigned>(OMPD_unknown)
: getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok));
if (DKind == OMPD_unknown)
return OMPD_unknown;
for (unsigned I = 0; I < llvm::array_lengthof(F); ++I) {
if (DKind != F[I][0])
continue;
Tok = P.getPreprocessor().LookAhead(0);
OpenMPDirectiveKindExWrapper SDKind =
Tok.isAnnotation()
? static_cast<unsigned>(OMPD_unknown)
: getOpenMPDirectiveKindEx(P.getPreprocessor().getSpelling(Tok));
if (SDKind == OMPD_unknown)
continue;
if (SDKind == F[I][1]) {
P.ConsumeToken();
DKind = F[I][2];
}
}
return unsigned(DKind) < llvm::omp::Directive_enumSize
? static_cast<OpenMPDirectiveKind>(DKind)
: OMPD_unknown;
}
static DeclarationName parseOpenMPReductionId(Parser &P) {
Token Tok = P.getCurToken();
Sema &Actions = P.getActions();
OverloadedOperatorKind OOK = OO_None;
// Allow to use 'operator' keyword for C++ operators
bool WithOperator = false;
if (Tok.is(tok::kw_operator)) {
P.ConsumeToken();
Tok = P.getCurToken();
WithOperator = true;
}
switch (Tok.getKind()) {
case tok::plus: // '+'
OOK = OO_Plus;
break;
case tok::minus: // '-'
OOK = OO_Minus;
break;
case tok::star: // '*'
OOK = OO_Star;
break;
case tok::amp: // '&'
OOK = OO_Amp;
break;
case tok::pipe: // '|'
OOK = OO_Pipe;
break;
case tok::caret: // '^'
OOK = OO_Caret;
break;
case tok::ampamp: // '&&'
OOK = OO_AmpAmp;
break;
case tok::pipepipe: // '||'
OOK = OO_PipePipe;
break;
case tok::identifier: // identifier
if (!WithOperator)
break;
LLVM_FALLTHROUGH;
default:
P.Diag(Tok.getLocation(), diag::err_omp_expected_reduction_identifier);
P.SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
Parser::StopBeforeMatch);
return DeclarationName();
}
P.ConsumeToken();
auto &DeclNames = Actions.getASTContext().DeclarationNames;
return OOK == OO_None ? DeclNames.getIdentifier(Tok.getIdentifierInfo())
: DeclNames.getCXXOperatorName(OOK);
}
/// Parse 'omp declare reduction' construct.
///
/// declare-reduction-directive:
/// annot_pragma_openmp 'declare' 'reduction'
/// '(' <reduction_id> ':' <type> {',' <type>} ':' <expression> ')'
/// ['initializer' '(' ('omp_priv' '=' <expression>)|<function_call> ')']
/// annot_pragma_openmp_end
/// <reduction_id> is either a base language identifier or one of the following
/// operators: '+', '-', '*', '&', '|', '^', '&&' and '||'.
///
Parser::DeclGroupPtrTy
Parser::ParseOpenMPDeclareReductionDirective(AccessSpecifier AS) {
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(
diag::err_expected_lparen_after,
getOpenMPDirectiveName(OMPD_declare_reduction).data())) {
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
return DeclGroupPtrTy();
}
DeclarationName Name = parseOpenMPReductionId(*this);
if (Name.isEmpty() && Tok.is(tok::annot_pragma_openmp_end))
return DeclGroupPtrTy();
// Consume ':'.
bool IsCorrect = !ExpectAndConsume(tok::colon);
if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
return DeclGroupPtrTy();
IsCorrect = IsCorrect && !Name.isEmpty();
if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok.getLocation(), diag::err_expected_type);
IsCorrect = false;
}
if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
return DeclGroupPtrTy();
SmallVector<std::pair<QualType, SourceLocation>, 8> ReductionTypes;
// Parse list of types until ':' token.
do {
ColonProtectionRAIIObject ColonRAII(*this);
SourceRange Range;
TypeResult TR = ParseTypeName(&Range, DeclaratorContext::Prototype, AS);
if (TR.isUsable()) {
QualType ReductionType =
Actions.ActOnOpenMPDeclareReductionType(Range.getBegin(), TR);
if (!ReductionType.isNull()) {
ReductionTypes.push_back(
std::make_pair(ReductionType, Range.getBegin()));
}
} else {
SkipUntil(tok::comma, tok::colon, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
if (Tok.is(tok::colon) || Tok.is(tok::annot_pragma_openmp_end))
break;
// Consume ','.
if (ExpectAndConsume(tok::comma)) {
IsCorrect = false;
if (Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok.getLocation(), diag::err_expected_type);
return DeclGroupPtrTy();
}
}
} while (Tok.isNot(tok::annot_pragma_openmp_end));
if (ReductionTypes.empty()) {
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
return DeclGroupPtrTy();
}
if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
return DeclGroupPtrTy();
// Consume ':'.
if (ExpectAndConsume(tok::colon))
IsCorrect = false;
if (Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok.getLocation(), diag::err_expected_expression);
return DeclGroupPtrTy();
}
DeclGroupPtrTy DRD = Actions.ActOnOpenMPDeclareReductionDirectiveStart(
getCurScope(), Actions.getCurLexicalContext(), Name, ReductionTypes, AS);
// Parse <combiner> expression and then parse initializer if any for each
// correct type.
unsigned I = 0, E = ReductionTypes.size();
for (Decl *D : DRD.get()) {
TentativeParsingAction TPA(*this);
ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
Scope::CompoundStmtScope |
Scope::OpenMPDirectiveScope);
// Parse <combiner> expression.
Actions.ActOnOpenMPDeclareReductionCombinerStart(getCurScope(), D);
ExprResult CombinerResult = Actions.ActOnFinishFullExpr(
ParseExpression().get(), D->getLocation(), /*DiscardedValue*/ false);
Actions.ActOnOpenMPDeclareReductionCombinerEnd(D, CombinerResult.get());
if (CombinerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
Tok.isNot(tok::annot_pragma_openmp_end)) {
TPA.Commit();
IsCorrect = false;
break;
}
IsCorrect = !T.consumeClose() && IsCorrect && CombinerResult.isUsable();
ExprResult InitializerResult;
if (Tok.isNot(tok::annot_pragma_openmp_end)) {
// Parse <initializer> expression.
if (Tok.is(tok::identifier) &&
Tok.getIdentifierInfo()->isStr("initializer")) {
ConsumeToken();
} else {
Diag(Tok.getLocation(), diag::err_expected) << "'initializer'";
TPA.Commit();
IsCorrect = false;
break;
}
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
IsCorrect =
!T.expectAndConsume(diag::err_expected_lparen_after, "initializer") &&
IsCorrect;
if (Tok.isNot(tok::annot_pragma_openmp_end)) {
ParseScope OMPDRScope(this, Scope::FnScope | Scope::DeclScope |
Scope::CompoundStmtScope |
Scope::OpenMPDirectiveScope);
// Parse expression.
VarDecl *OmpPrivParm =
Actions.ActOnOpenMPDeclareReductionInitializerStart(getCurScope(),
D);
// Check if initializer is omp_priv <init_expr> or something else.
if (Tok.is(tok::identifier) &&
Tok.getIdentifierInfo()->isStr("omp_priv")) {
ConsumeToken();
ParseOpenMPReductionInitializerForDecl(OmpPrivParm);
} else {
InitializerResult = Actions.ActOnFinishFullExpr(
ParseAssignmentExpression().get(), D->getLocation(),
/*DiscardedValue*/ false);
}
Actions.ActOnOpenMPDeclareReductionInitializerEnd(
D, InitializerResult.get(), OmpPrivParm);
if (InitializerResult.isInvalid() && Tok.isNot(tok::r_paren) &&
Tok.isNot(tok::annot_pragma_openmp_end)) {
TPA.Commit();
IsCorrect = false;
break;
}
IsCorrect =
!T.consumeClose() && IsCorrect && !InitializerResult.isInvalid();
}
}
++I;
// Revert parsing if not the last type, otherwise accept it, we're done with
// parsing.
if (I != E)
TPA.Revert();
else
TPA.Commit();
}
return Actions.ActOnOpenMPDeclareReductionDirectiveEnd(getCurScope(), DRD,
IsCorrect);
}
void Parser::ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm) {
// Parse declarator '=' initializer.
// If a '==' or '+=' is found, suggest a fixit to '='.
if (isTokenEqualOrEqualTypo()) {
ConsumeToken();
if (Tok.is(tok::code_completion)) {
cutOffParsing();
Actions.CodeCompleteInitializer(getCurScope(), OmpPrivParm);
Actions.FinalizeDeclaration(OmpPrivParm);
return;
}
PreferredType.enterVariableInit(Tok.getLocation(), OmpPrivParm);
ExprResult Init = ParseInitializer();
if (Init.isInvalid()) {
SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
Actions.ActOnInitializerError(OmpPrivParm);
} else {
Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
/*DirectInit=*/false);
}
} else if (Tok.is(tok::l_paren)) {
// Parse C++ direct initializer: '(' expression-list ')'
BalancedDelimiterTracker T(*this, tok::l_paren);
T.consumeOpen();
ExprVector Exprs;
CommaLocsTy CommaLocs;
SourceLocation LParLoc = T.getOpenLocation();
auto RunSignatureHelp = [this, OmpPrivParm, LParLoc, &Exprs]() {
QualType PreferredType = Actions.ProduceConstructorSignatureHelp(
getCurScope(), OmpPrivParm->getType()->getCanonicalTypeInternal(),
OmpPrivParm->getLocation(), Exprs, LParLoc);
CalledSignatureHelp = true;
return PreferredType;
};
if (ParseExpressionList(Exprs, CommaLocs, [&] {
PreferredType.enterFunctionArgument(Tok.getLocation(),
RunSignatureHelp);
})) {
if (PP.isCodeCompletionReached() && !CalledSignatureHelp)
RunSignatureHelp();
Actions.ActOnInitializerError(OmpPrivParm);
SkipUntil(tok::r_paren, tok::annot_pragma_openmp_end, StopBeforeMatch);
} else {
// Match the ')'.
SourceLocation RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
assert(!Exprs.empty() && Exprs.size() - 1 == CommaLocs.size() &&
"Unexpected number of commas!");
ExprResult Initializer =
Actions.ActOnParenListExpr(T.getOpenLocation(), RLoc, Exprs);
Actions.AddInitializerToDecl(OmpPrivParm, Initializer.get(),
/*DirectInit=*/true);
}
} else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
// Parse C++0x braced-init-list.
Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
ExprResult Init(ParseBraceInitializer());
if (Init.isInvalid()) {
Actions.ActOnInitializerError(OmpPrivParm);
} else {
Actions.AddInitializerToDecl(OmpPrivParm, Init.get(),
/*DirectInit=*/true);
}
} else {
Actions.ActOnUninitializedDecl(OmpPrivParm);
}
}
/// Parses 'omp declare mapper' directive.
///
/// declare-mapper-directive:
/// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifier> ':']
/// <type> <var> ')' [<clause>[[,] <clause>] ... ]
/// annot_pragma_openmp_end
/// <mapper-identifier> and <var> are base language identifiers.
///
Parser::DeclGroupPtrTy
Parser::ParseOpenMPDeclareMapperDirective(AccessSpecifier AS) {
bool IsCorrect = true;
// Parse '('
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPDirectiveName(OMPD_declare_mapper).data())) {
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
return DeclGroupPtrTy();
}
// Parse <mapper-identifier>
auto &DeclNames = Actions.getASTContext().DeclarationNames;
DeclarationName MapperId;
if (PP.LookAhead(0).is(tok::colon)) {
if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) {
Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier);
IsCorrect = false;
} else {
MapperId = DeclNames.getIdentifier(Tok.getIdentifierInfo());
}
ConsumeToken();
// Consume ':'.
ExpectAndConsume(tok::colon);
} else {
// If no mapper identifier is provided, its name is "default" by default
MapperId =
DeclNames.getIdentifier(&Actions.getASTContext().Idents.get("default"));
}
if (!IsCorrect && Tok.is(tok::annot_pragma_openmp_end))
return DeclGroupPtrTy();
// Parse <type> <var>
DeclarationName VName;
QualType MapperType;
SourceRange Range;
TypeResult ParsedType = parseOpenMPDeclareMapperVarDecl(Range, VName, AS);
if (ParsedType.isUsable())
MapperType =
Actions.ActOnOpenMPDeclareMapperType(Range.getBegin(), ParsedType);
if (MapperType.isNull())
IsCorrect = false;
if (!IsCorrect) {
SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch);
return DeclGroupPtrTy();
}
// Consume ')'.
IsCorrect &= !T.consumeClose();
if (!IsCorrect) {
SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch);
return DeclGroupPtrTy();
}
// Enter scope.
DeclarationNameInfo DirName;
SourceLocation Loc = Tok.getLocation();
unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope |
Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope;
ParseScope OMPDirectiveScope(this, ScopeFlags);
Actions.StartOpenMPDSABlock(OMPD_declare_mapper, DirName, getCurScope(), Loc);
// Add the mapper variable declaration.
ExprResult MapperVarRef = Actions.ActOnOpenMPDeclareMapperDirectiveVarDecl(
getCurScope(), MapperType, Range.getBegin(), VName);
// Parse map clauses.
SmallVector<OMPClause *, 6> Clauses;
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
Actions.StartOpenMPClause(CKind);
OMPClause *Clause =
ParseOpenMPClause(OMPD_declare_mapper, CKind, Clauses.empty());
if (Clause)
Clauses.push_back(Clause);
else
IsCorrect = false;
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
Actions.EndOpenMPClause();
}
if (Clauses.empty()) {
Diag(Tok, diag::err_omp_expected_clause)
<< getOpenMPDirectiveName(OMPD_declare_mapper);
IsCorrect = false;
}
// Exit scope.
Actions.EndOpenMPDSABlock(nullptr);
OMPDirectiveScope.Exit();
DeclGroupPtrTy DG = Actions.ActOnOpenMPDeclareMapperDirective(
getCurScope(), Actions.getCurLexicalContext(), MapperId, MapperType,
Range.getBegin(), VName, AS, MapperVarRef.get(), Clauses);
if (!IsCorrect)
return DeclGroupPtrTy();
return DG;
}
TypeResult Parser::parseOpenMPDeclareMapperVarDecl(SourceRange &Range,
DeclarationName &Name,
AccessSpecifier AS) {
// Parse the common declaration-specifiers piece.
Parser::DeclSpecContext DSC = Parser::DeclSpecContext::DSC_type_specifier;
DeclSpec DS(AttrFactory);
ParseSpecifierQualifierList(DS, AS, DSC);
// Parse the declarator.
DeclaratorContext Context = DeclaratorContext::Prototype;
Declarator DeclaratorInfo(DS, Context);
ParseDeclarator(DeclaratorInfo);
Range = DeclaratorInfo.getSourceRange();
if (DeclaratorInfo.getIdentifier() == nullptr) {
Diag(Tok.getLocation(), diag::err_omp_mapper_expected_declarator);
return true;
}
Name = Actions.GetNameForDeclarator(DeclaratorInfo).getName();
return Actions.ActOnOpenMPDeclareMapperVarDecl(getCurScope(), DeclaratorInfo);
}
namespace {
/// RAII that recreates function context for correct parsing of clauses of
/// 'declare simd' construct.
/// OpenMP, 2.8.2 declare simd Construct
/// The expressions appearing in the clauses of this directive are evaluated in
/// the scope of the arguments of the function declaration or definition.
class FNContextRAII final {
Parser &P;
Sema::CXXThisScopeRAII *ThisScope;
Parser::MultiParseScope Scopes;
bool HasFunScope = false;
FNContextRAII() = delete;
FNContextRAII(const FNContextRAII &) = delete;
FNContextRAII &operator=(const FNContextRAII &) = delete;
public:
FNContextRAII(Parser &P, Parser::DeclGroupPtrTy Ptr) : P(P), Scopes(P) {
Decl *D = *Ptr.get().begin();
NamedDecl *ND = dyn_cast<NamedDecl>(D);
RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
Sema &Actions = P.getActions();
// Allow 'this' within late-parsed attributes.
ThisScope = new Sema::CXXThisScopeRAII(Actions, RD, Qualifiers(),
ND && ND->isCXXInstanceMember());
// If the Decl is templatized, add template parameters to scope.
// FIXME: Track CurTemplateDepth?
P.ReenterTemplateScopes(Scopes, D);
// If the Decl is on a function, add function parameters to the scope.
if (D->isFunctionOrFunctionTemplate()) {
HasFunScope = true;
Scopes.Enter(Scope::FnScope | Scope::DeclScope |
Scope::CompoundStmtScope);
Actions.ActOnReenterFunctionContext(Actions.getCurScope(), D);
}
}
~FNContextRAII() {
if (HasFunScope)
P.getActions().ActOnExitFunctionContext();
delete ThisScope;
}
};
} // namespace
/// Parses clauses for 'declare simd' directive.
/// clause:
/// 'inbranch' | 'notinbranch'
/// 'simdlen' '(' <expr> ')'
/// { 'uniform' '(' <argument_list> ')' }
/// { 'aligned '(' <argument_list> [ ':' <alignment> ] ')' }
/// { 'linear '(' <argument_list> [ ':' <step> ] ')' }
static bool parseDeclareSimdClauses(
Parser &P, OMPDeclareSimdDeclAttr::BranchStateTy &BS, ExprResult &SimdLen,
SmallVectorImpl<Expr *> &Uniforms, SmallVectorImpl<Expr *> &Aligneds,
SmallVectorImpl<Expr *> &Alignments, SmallVectorImpl<Expr *> &Linears,
SmallVectorImpl<unsigned> &LinModifiers, SmallVectorImpl<Expr *> &Steps) {
SourceRange BSRange;
const Token &Tok = P.getCurToken();
bool IsError = false;
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
if (Tok.isNot(tok::identifier))
break;
OMPDeclareSimdDeclAttr::BranchStateTy Out;
IdentifierInfo *II = Tok.getIdentifierInfo();
StringRef ClauseName = II->getName();
// Parse 'inranch|notinbranch' clauses.
if (OMPDeclareSimdDeclAttr::ConvertStrToBranchStateTy(ClauseName, Out)) {
if (BS != OMPDeclareSimdDeclAttr::BS_Undefined && BS != Out) {
P.Diag(Tok, diag::err_omp_declare_simd_inbranch_notinbranch)
<< ClauseName
<< OMPDeclareSimdDeclAttr::ConvertBranchStateTyToStr(BS) << BSRange;
IsError = true;
}
BS = Out;
BSRange = SourceRange(Tok.getLocation(), Tok.getEndLoc());
P.ConsumeToken();
} else if (ClauseName.equals("simdlen")) {
if (SimdLen.isUsable()) {
P.Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(OMPD_declare_simd) << ClauseName << 0;
IsError = true;
}
P.ConsumeToken();
SourceLocation RLoc;
SimdLen = P.ParseOpenMPParensExpr(ClauseName, RLoc);
if (SimdLen.isInvalid())
IsError = true;
} else {
OpenMPClauseKind CKind = getOpenMPClauseKind(ClauseName);
if (CKind == OMPC_uniform || CKind == OMPC_aligned ||
CKind == OMPC_linear) {
Parser::OpenMPVarListDataTy Data;
SmallVectorImpl<Expr *> *Vars = &Uniforms;
if (CKind == OMPC_aligned) {
Vars = &Aligneds;
} else if (CKind == OMPC_linear) {
Data.ExtraModifier = OMPC_LINEAR_val;
Vars = &Linears;
}
P.ConsumeToken();
if (P.ParseOpenMPVarList(OMPD_declare_simd,
getOpenMPClauseKind(ClauseName), *Vars, Data))
IsError = true;
if (CKind == OMPC_aligned) {
Alignments.append(Aligneds.size() - Alignments.size(),
Data.DepModOrTailExpr);
} else if (CKind == OMPC_linear) {
assert(0 <= Data.ExtraModifier &&
Data.ExtraModifier <= OMPC_LINEAR_unknown &&
"Unexpected linear modifier.");
if (P.getActions().CheckOpenMPLinearModifier(
static_cast<OpenMPLinearClauseKind>(Data.ExtraModifier),
Data.ExtraModifierLoc))
Data.ExtraModifier = OMPC_LINEAR_val;
LinModifiers.append(Linears.size() - LinModifiers.size(),
Data.ExtraModifier);
Steps.append(Linears.size() - Steps.size(), Data.DepModOrTailExpr);
}
} else
// TODO: add parsing of other clauses.
break;
}
// Skip ',' if any.
if (Tok.is(tok::comma))
P.ConsumeToken();
}
return IsError;
}
/// Parse clauses for '#pragma omp declare simd'.
Parser::DeclGroupPtrTy
Parser::ParseOMPDeclareSimdClauses(Parser::DeclGroupPtrTy Ptr,
CachedTokens &Toks, SourceLocation Loc) {
PP.EnterToken(Tok, /*IsReinject*/ true);
PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true,
/*IsReinject*/ true);
// Consume the previously pushed token.
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
FNContextRAII FnContext(*this, Ptr);
OMPDeclareSimdDeclAttr::BranchStateTy BS =
OMPDeclareSimdDeclAttr::BS_Undefined;
ExprResult Simdlen;
SmallVector<Expr *, 4> Uniforms;
SmallVector<Expr *, 4> Aligneds;
SmallVector<Expr *, 4> Alignments;
SmallVector<Expr *, 4> Linears;
SmallVector<unsigned, 4> LinModifiers;
SmallVector<Expr *, 4> Steps;
bool IsError =
parseDeclareSimdClauses(*this, BS, Simdlen, Uniforms, Aligneds,
Alignments, Linears, LinModifiers, Steps);
skipUntilPragmaOpenMPEnd(OMPD_declare_simd);
// Skip the last annot_pragma_openmp_end.
SourceLocation EndLoc = ConsumeAnnotationToken();
if (IsError)
return Ptr;
return Actions.ActOnOpenMPDeclareSimdDirective(
Ptr, BS, Simdlen.get(), Uniforms, Aligneds, Alignments, Linears,
LinModifiers, Steps, SourceRange(Loc, EndLoc));
}
namespace {
/// Constant used in the diagnostics to distinguish the levels in an OpenMP
/// contexts: selector-set={selector(trait, ...), ...}, ....
enum OMPContextLvl {
CONTEXT_SELECTOR_SET_LVL = 0,
CONTEXT_SELECTOR_LVL = 1,
CONTEXT_TRAIT_LVL = 2,
};
static StringRef stringLiteralParser(Parser &P) {
ExprResult Res = P.ParseStringLiteralExpression(true);
return Res.isUsable() ? Res.getAs<StringLiteral>()->getString() : "";
}
static StringRef getNameFromIdOrString(Parser &P, Token &Tok,
OMPContextLvl Lvl) {
if (Tok.is(tok::identifier) || Tok.is(tok::kw_for)) {
llvm::SmallString<16> Buffer;
StringRef Name = P.getPreprocessor().getSpelling(Tok, Buffer);
(void)P.ConsumeToken();
return Name;
}
if (tok::isStringLiteral(Tok.getKind()))
return stringLiteralParser(P);
P.Diag(Tok.getLocation(),
diag::warn_omp_declare_variant_string_literal_or_identifier)
<< Lvl;
return "";
}
static bool checkForDuplicates(Parser &P, StringRef Name,
SourceLocation NameLoc,
llvm::StringMap<SourceLocation> &Seen,
OMPContextLvl Lvl) {
auto Res = Seen.try_emplace(Name, NameLoc);
if (Res.second)
return false;
// Each trait-set-selector-name, trait-selector-name and trait-name can
// only be specified once.
P.Diag(NameLoc, diag::warn_omp_declare_variant_ctx_mutiple_use)
<< Lvl << Name;
P.Diag(Res.first->getValue(), diag::note_omp_declare_variant_ctx_used_here)
<< Lvl << Name;
return true;
}
} // namespace
void Parser::parseOMPTraitPropertyKind(OMPTraitProperty &TIProperty,
llvm::omp::TraitSet Set,
llvm::omp::TraitSelector Selector,
llvm::StringMap<SourceLocation> &Seen) {
TIProperty.Kind = TraitProperty::invalid;
SourceLocation NameLoc = Tok.getLocation();
StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_TRAIT_LVL);
if (Name.empty()) {
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector);
return;
}
TIProperty.RawString = Name;
TIProperty.Kind = getOpenMPContextTraitPropertyKind(Set, Selector, Name);
if (TIProperty.Kind != TraitProperty::invalid) {
if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_TRAIT_LVL))
TIProperty.Kind = TraitProperty::invalid;
return;
}
// It follows diagnosis and helping notes.
// FIXME: We should move the diagnosis string generation into libFrontend.
Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_property)
<< Name << getOpenMPContextTraitSelectorName(Selector)
<< getOpenMPContextTraitSetName(Set);
TraitSet SetForName = getOpenMPContextTraitSetKind(Name);
if (SetForName != TraitSet::invalid) {
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_TRAIT_LVL;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< Name << "<selector-name>"
<< "(<property-name>)";
return;
}
TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name);
if (SelectorForName != TraitSelector::invalid) {
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_SELECTOR_LVL << CONTEXT_TRAIT_LVL;
bool AllowsTraitScore = false;
bool RequiresProperty = false;
isValidTraitSelectorForTraitSet(
SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName),
AllowsTraitScore, RequiresProperty);
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForSelector(SelectorForName))
<< Name << (RequiresProperty ? "(<property-name>)" : "");
return;
}
for (const auto &PotentialSet :
{TraitSet::construct, TraitSet::user, TraitSet::implementation,
TraitSet::device}) {
TraitProperty PropertyForName =
getOpenMPContextTraitPropertyKind(PotentialSet, Selector, Name);
if (PropertyForName == TraitProperty::invalid)
continue;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForProperty(PropertyForName))
<< getOpenMPContextTraitSelectorName(
getOpenMPContextTraitSelectorForProperty(PropertyForName))
<< ("(" + Name + ")").str();
return;
}
Diag(NameLoc, diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_TRAIT_LVL << listOpenMPContextTraitProperties(Set, Selector);
}
static bool checkExtensionProperty(Parser &P, SourceLocation Loc,
OMPTraitProperty &TIProperty,
OMPTraitSelector &TISelector,
llvm::StringMap<SourceLocation> &Seen) {
assert(TISelector.Kind ==
llvm::omp::TraitSelector::implementation_extension &&
"Only for extension properties, e.g., "
"`implementation={extension(PROPERTY)}`");
if (TIProperty.Kind == TraitProperty::invalid)
return false;
if (TIProperty.Kind ==
TraitProperty::implementation_extension_disable_implicit_base)
return true;
if (TIProperty.Kind ==
TraitProperty::implementation_extension_allow_templates)
return true;
auto IsMatchExtension = [](OMPTraitProperty &TP) {
return (TP.Kind ==
llvm::omp::TraitProperty::implementation_extension_match_all ||
TP.Kind ==
llvm::omp::TraitProperty::implementation_extension_match_any ||
TP.Kind ==
llvm::omp::TraitProperty::implementation_extension_match_none);
};
if (IsMatchExtension(TIProperty)) {
for (OMPTraitProperty &SeenProp : TISelector.Properties)
if (IsMatchExtension(SeenProp)) {
P.Diag(Loc, diag::err_omp_variant_ctx_second_match_extension);
StringRef SeenName = llvm::omp::getOpenMPContextTraitPropertyName(
SeenProp.Kind, SeenProp.RawString);
SourceLocation SeenLoc = Seen[SeenName];
P.Diag(SeenLoc, diag::note_omp_declare_variant_ctx_used_here)
<< CONTEXT_TRAIT_LVL << SeenName;
return false;
}
return true;
}
llvm_unreachable("Unknown extension property!");
}
void Parser::parseOMPContextProperty(OMPTraitSelector &TISelector,
llvm::omp::TraitSet Set,
llvm::StringMap<SourceLocation> &Seen) {
assert(TISelector.Kind != TraitSelector::user_condition &&
"User conditions are special properties not handled here!");
SourceLocation PropertyLoc = Tok.getLocation();
OMPTraitProperty TIProperty;
parseOMPTraitPropertyKind(TIProperty, Set, TISelector.Kind, Seen);
if (TISelector.Kind == llvm::omp::TraitSelector::implementation_extension)
if (!checkExtensionProperty(*this, Tok.getLocation(), TIProperty,
TISelector, Seen))
TIProperty.Kind = TraitProperty::invalid;
// If we have an invalid property here we already issued a warning.
if (TIProperty.Kind == TraitProperty::invalid) {
if (PropertyLoc != Tok.getLocation())
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here)
<< CONTEXT_TRAIT_LVL;
return;
}
if (isValidTraitPropertyForTraitSetAndSelector(TIProperty.Kind,
TISelector.Kind, Set)) {
// If we make it here the property, selector, set, score, condition, ... are
// all valid (or have been corrected). Thus we can record the property.
TISelector.Properties.push_back(TIProperty);
return;
}
Diag(PropertyLoc, diag::warn_omp_ctx_incompatible_property_for_selector)
<< getOpenMPContextTraitPropertyName(TIProperty.Kind,
TIProperty.RawString)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(Set);
Diag(PropertyLoc, diag::note_omp_ctx_compatible_set_and_selector_for_property)
<< getOpenMPContextTraitPropertyName(TIProperty.Kind,
TIProperty.RawString)
<< getOpenMPContextTraitSelectorName(
getOpenMPContextTraitSelectorForProperty(TIProperty.Kind))
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForProperty(TIProperty.Kind));
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here)
<< CONTEXT_TRAIT_LVL;
}
void Parser::parseOMPTraitSelectorKind(OMPTraitSelector &TISelector,
llvm::omp::TraitSet Set,
llvm::StringMap<SourceLocation> &Seen) {
TISelector.Kind = TraitSelector::invalid;
SourceLocation NameLoc = Tok.getLocation();
StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_LVL);
if (Name.empty()) {
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set);
return;
}
TISelector.Kind = getOpenMPContextTraitSelectorKind(Name);
if (TISelector.Kind != TraitSelector::invalid) {
if (checkForDuplicates(*this, Name, NameLoc, Seen, CONTEXT_SELECTOR_LVL))
TISelector.Kind = TraitSelector::invalid;
return;
}
// It follows diagnosis and helping notes.
Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_selector)
<< Name << getOpenMPContextTraitSetName(Set);
TraitSet SetForName = getOpenMPContextTraitSetKind(Name);
if (SetForName != TraitSet::invalid) {
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_SELECTOR_SET_LVL << CONTEXT_SELECTOR_LVL;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< Name << "<selector-name>"
<< "<property-name>";
return;
}
for (const auto &PotentialSet :
{TraitSet::construct, TraitSet::user, TraitSet::implementation,
TraitSet::device}) {
TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind(
PotentialSet, TraitSelector::invalid, Name);
if (PropertyForName == TraitProperty::invalid)
continue;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_LVL;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForProperty(PropertyForName))
<< getOpenMPContextTraitSelectorName(
getOpenMPContextTraitSelectorForProperty(PropertyForName))
<< ("(" + Name + ")").str();
return;
}
Diag(NameLoc, diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_SELECTOR_LVL << listOpenMPContextTraitSelectors(Set);
}
/// Parse optional 'score' '(' <expr> ')' ':'.
static ExprResult parseContextScore(Parser &P) {
ExprResult ScoreExpr;
llvm::SmallString<16> Buffer;
StringRef SelectorName =
P.getPreprocessor().getSpelling(P.getCurToken(), Buffer);
if (!SelectorName.equals("score"))
return ScoreExpr;
(void)P.ConsumeToken();
SourceLocation RLoc;
ScoreExpr = P.ParseOpenMPParensExpr(SelectorName, RLoc);
// Parse ':'
if (P.getCurToken().is(tok::colon))
(void)P.ConsumeAnyToken();
else
P.Diag(P.getCurToken(), diag::warn_omp_declare_variant_expected)
<< "':'"
<< "score expression";
return ScoreExpr;
}
/// Parses an OpenMP context selector.
///
/// <trait-selector-name> ['('[<trait-score>] <trait-property> [, <t-p>]* ')']
void Parser::parseOMPContextSelector(
OMPTraitSelector &TISelector, llvm::omp::TraitSet Set,
llvm::StringMap<SourceLocation> &SeenSelectors) {
unsigned short OuterPC = ParenCount;
// If anything went wrong we issue an error or warning and then skip the rest
// of the selector. However, commas are ambiguous so we look for the nesting
// of parentheses here as well.
auto FinishSelector = [OuterPC, this]() -> void {
bool Done = false;
while (!Done) {
while (!SkipUntil({tok::r_brace, tok::r_paren, tok::comma,
tok::annot_pragma_openmp_end},
StopBeforeMatch))
;
if (Tok.is(tok::r_paren) && OuterPC > ParenCount)
(void)ConsumeParen();
if (OuterPC <= ParenCount) {
Done = true;
break;
}
if (!Tok.is(tok::comma) && !Tok.is(tok::r_paren)) {
Done = true;
break;
}
(void)ConsumeAnyToken();
}
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here)
<< CONTEXT_SELECTOR_LVL;
};
SourceLocation SelectorLoc = Tok.getLocation();
parseOMPTraitSelectorKind(TISelector, Set, SeenSelectors);
if (TISelector.Kind == TraitSelector::invalid)
return FinishSelector();
bool AllowsTraitScore = false;
bool RequiresProperty = false;
if (!isValidTraitSelectorForTraitSet(TISelector.Kind, Set, AllowsTraitScore,
RequiresProperty)) {
Diag(SelectorLoc, diag::warn_omp_ctx_incompatible_selector_for_set)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(Set);
Diag(SelectorLoc, diag::note_omp_ctx_compatible_set_for_selector)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForSelector(TISelector.Kind))
<< RequiresProperty;
return FinishSelector();
}
if (!RequiresProperty) {
TISelector.Properties.push_back(
{getOpenMPContextTraitPropertyForSelector(TISelector.Kind),
getOpenMPContextTraitSelectorName(TISelector.Kind)});
return;
}
if (!Tok.is(tok::l_paren)) {
Diag(SelectorLoc, diag::warn_omp_ctx_selector_without_properties)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(Set);
return FinishSelector();
}
if (TISelector.Kind == TraitSelector::user_condition) {
SourceLocation RLoc;
ExprResult Condition = ParseOpenMPParensExpr("user condition", RLoc);
if (!Condition.isUsable())
return FinishSelector();
TISelector.ScoreOrCondition = Condition.get();
TISelector.Properties.push_back(
{TraitProperty::user_condition_unknown, "<condition>"});
return;
}
BalancedDelimiterTracker BDT(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
// Parse '('.
(void)BDT.consumeOpen();
SourceLocation ScoreLoc = Tok.getLocation();
ExprResult Score = parseContextScore(*this);
if (!AllowsTraitScore && !Score.isUnset()) {
if (Score.isUsable()) {
Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(Set) << Score.get();
} else {
Diag(ScoreLoc, diag::warn_omp_ctx_incompatible_score_for_property)
<< getOpenMPContextTraitSelectorName(TISelector.Kind)
<< getOpenMPContextTraitSetName(Set) << "<invalid>";
}
Score = ExprResult();
}
if (Score.isUsable())
TISelector.ScoreOrCondition = Score.get();
llvm::StringMap<SourceLocation> SeenProperties;
do {
parseOMPContextProperty(TISelector, Set, SeenProperties);
} while (TryConsumeToken(tok::comma));
// Parse ')'.
BDT.consumeClose();
}
void Parser::parseOMPTraitSetKind(OMPTraitSet &TISet,
llvm::StringMap<SourceLocation> &Seen) {
TISet.Kind = TraitSet::invalid;
SourceLocation NameLoc = Tok.getLocation();
StringRef Name = getNameFromIdOrString(*this, Tok, CONTEXT_SELECTOR_SET_LVL);
if (Name.empty()) {
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets();
return;
}
TISet.Kind = getOpenMPContextTraitSetKind(Name);
if (TISet.Kind != TraitSet::invalid) {
if (checkForDuplicates(*this, Name, NameLoc, Seen,
CONTEXT_SELECTOR_SET_LVL))
TISet.Kind = TraitSet::invalid;
return;
}
// It follows diagnosis and helping notes.
Diag(NameLoc, diag::warn_omp_declare_variant_ctx_not_a_set) << Name;
TraitSelector SelectorForName = getOpenMPContextTraitSelectorKind(Name);
if (SelectorForName != TraitSelector::invalid) {
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_SELECTOR_LVL << CONTEXT_SELECTOR_SET_LVL;
bool AllowsTraitScore = false;
bool RequiresProperty = false;
isValidTraitSelectorForTraitSet(
SelectorForName, getOpenMPContextTraitSetForSelector(SelectorForName),
AllowsTraitScore, RequiresProperty);
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForSelector(SelectorForName))
<< Name << (RequiresProperty ? "(<property-name>)" : "");
return;
}
for (const auto &PotentialSet :
{TraitSet::construct, TraitSet::user, TraitSet::implementation,
TraitSet::device}) {
TraitProperty PropertyForName = getOpenMPContextTraitPropertyKind(
PotentialSet, TraitSelector::invalid, Name);
if (PropertyForName == TraitProperty::invalid)
continue;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_is_a)
<< Name << CONTEXT_TRAIT_LVL << CONTEXT_SELECTOR_SET_LVL;
Diag(NameLoc, diag::note_omp_declare_variant_ctx_try)
<< getOpenMPContextTraitSetName(
getOpenMPContextTraitSetForProperty(PropertyForName))
<< getOpenMPContextTraitSelectorName(
getOpenMPContextTraitSelectorForProperty(PropertyForName))
<< ("(" + Name + ")").str();
return;
}
Diag(NameLoc, diag::note_omp_declare_variant_ctx_options)
<< CONTEXT_SELECTOR_SET_LVL << listOpenMPContextTraitSets();
}
/// Parses an OpenMP context selector set.
///
/// <trait-set-selector-name> '=' '{' <trait-selector> [, <trait-selector>]* '}'
void Parser::parseOMPContextSelectorSet(
OMPTraitSet &TISet, llvm::StringMap<SourceLocation> &SeenSets) {
auto OuterBC = BraceCount;
// If anything went wrong we issue an error or warning and then skip the rest
// of the set. However, commas are ambiguous so we look for the nesting
// of braces here as well.
auto FinishSelectorSet = [this, OuterBC]() -> void {
bool Done = false;
while (!Done) {
while (!SkipUntil({tok::comma, tok::r_brace, tok::r_paren,
tok::annot_pragma_openmp_end},
StopBeforeMatch))
;
if (Tok.is(tok::r_brace) && OuterBC > BraceCount)
(void)ConsumeBrace();
if (OuterBC <= BraceCount) {
Done = true;
break;
}
if (!Tok.is(tok::comma) && !Tok.is(tok::r_brace)) {
Done = true;
break;
}
(void)ConsumeAnyToken();
}
Diag(Tok.getLocation(), diag::note_omp_declare_variant_ctx_continue_here)
<< CONTEXT_SELECTOR_SET_LVL;
};
parseOMPTraitSetKind(TISet, SeenSets);
if (TISet.Kind == TraitSet::invalid)
return FinishSelectorSet();
// Parse '='.
if (!TryConsumeToken(tok::equal))
Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected)
<< "="
<< ("context set name \"" + getOpenMPContextTraitSetName(TISet.Kind) +
"\"")
.str();
// Parse '{'.
if (Tok.is(tok::l_brace)) {
(void)ConsumeBrace();
} else {
Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected)
<< "{"
<< ("'=' that follows the context set name \"" +
getOpenMPContextTraitSetName(TISet.Kind) + "\"")
.str();
}
llvm::StringMap<SourceLocation> SeenSelectors;
do {
OMPTraitSelector TISelector;
parseOMPContextSelector(TISelector, TISet.Kind, SeenSelectors);
if (TISelector.Kind != TraitSelector::invalid &&
!TISelector.Properties.empty())
TISet.Selectors.push_back(TISelector);
} while (TryConsumeToken(tok::comma));
// Parse '}'.
if (Tok.is(tok::r_brace)) {
(void)ConsumeBrace();
} else {
Diag(Tok.getLocation(), diag::warn_omp_declare_variant_expected)
<< "}"
<< ("context selectors for the context set \"" +
getOpenMPContextTraitSetName(TISet.Kind) + "\"")
.str();
}
}
/// Parse OpenMP context selectors:
///
/// <trait-set-selector> [, <trait-set-selector>]*
bool Parser::parseOMPContextSelectors(SourceLocation Loc, OMPTraitInfo &TI) {
llvm::StringMap<SourceLocation> SeenSets;
do {
OMPTraitSet TISet;
parseOMPContextSelectorSet(TISet, SeenSets);
if (TISet.Kind != TraitSet::invalid && !TISet.Selectors.empty())
TI.Sets.push_back(TISet);
} while (TryConsumeToken(tok::comma));
return false;
}
/// Parse clauses for '#pragma omp declare variant ( variant-func-id ) clause'.
void Parser::ParseOMPDeclareVariantClauses(Parser::DeclGroupPtrTy Ptr,
CachedTokens &Toks,
SourceLocation Loc) {
PP.EnterToken(Tok, /*IsReinject*/ true);
PP.EnterTokenStream(Toks, /*DisableMacroExpansion=*/true,
/*IsReinject*/ true);
// Consume the previously pushed token.
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
FNContextRAII FnContext(*this, Ptr);
// Parse function declaration id.
SourceLocation RLoc;
// Parse with IsAddressOfOperand set to true to parse methods as DeclRefExprs
// instead of MemberExprs.
ExprResult AssociatedFunction;
{
// Do not mark function as is used to prevent its emission if this is the
// only place where it is used.
EnterExpressionEvaluationContext Unevaluated(
Actions, Sema::ExpressionEvaluationContext::Unevaluated);
AssociatedFunction = ParseOpenMPParensExpr(
getOpenMPDirectiveName(OMPD_declare_variant), RLoc,
/*IsAddressOfOperand=*/true);
}
if (!AssociatedFunction.isUsable()) {
if (!Tok.is(tok::annot_pragma_openmp_end))
while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch))
;
// Skip the last annot_pragma_openmp_end.
(void)ConsumeAnnotationToken();
return;
}
OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope();
ASTContext &ASTCtx = Actions.getASTContext();
OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo();
SmallVector<Expr *, 6> AdjustNothing;
SmallVector<Expr *, 6> AdjustNeedDevicePtr;
SmallVector<OMPDeclareVariantAttr::InteropType, 3> AppendArgs;
SourceLocation AdjustArgsLoc, AppendArgsLoc;
// At least one clause is required.
if (Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok.getLocation(), diag::err_omp_declare_variant_wrong_clause)
<< (getLangOpts().OpenMP < 51 ? 0 : 1);
}
bool IsError = false;
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
if (!isAllowedClauseForDirective(OMPD_declare_variant, CKind,
getLangOpts().OpenMP)) {
Diag(Tok.getLocation(), diag::err_omp_declare_variant_wrong_clause)
<< (getLangOpts().OpenMP < 51 ? 0 : 1);
IsError = true;
}
if (!IsError) {
switch (CKind) {
case OMPC_match:
IsError = parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI);
break;
case OMPC_adjust_args: {
AdjustArgsLoc = Tok.getLocation();
ConsumeToken();
Parser::OpenMPVarListDataTy Data;
SmallVector<Expr *> Vars;
IsError = ParseOpenMPVarList(OMPD_declare_variant, OMPC_adjust_args,
Vars, Data);
if (!IsError)
llvm::append_range(Data.ExtraModifier == OMPC_ADJUST_ARGS_nothing
? AdjustNothing
: AdjustNeedDevicePtr,
Vars);
break;
}
case OMPC_append_args:
if (!AppendArgs.empty()) {
Diag(AppendArgsLoc, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(OMPD_declare_variant)
<< getOpenMPClauseName(CKind) << 0;
IsError = true;
}
if (!IsError) {
AppendArgsLoc = Tok.getLocation();
ConsumeToken();
IsError = parseOpenMPAppendArgs(AppendArgs);
}
break;
default:
llvm_unreachable("Unexpected clause for declare variant.");
}
}
if (IsError) {
while (!SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch))
;
// Skip the last annot_pragma_openmp_end.
(void)ConsumeAnnotationToken();
return;
}
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
}
Optional<std::pair<FunctionDecl *, Expr *>> DeclVarData =
Actions.checkOpenMPDeclareVariantFunction(
Ptr, AssociatedFunction.get(), TI, AppendArgs.size(),
SourceRange(Loc, Tok.getLocation()));
if (DeclVarData && !TI.Sets.empty())
Actions.ActOnOpenMPDeclareVariantDirective(
DeclVarData->first, DeclVarData->second, TI, AdjustNothing,
AdjustNeedDevicePtr, AppendArgs, AdjustArgsLoc, AppendArgsLoc,
SourceRange(Loc, Tok.getLocation()));
// Skip the last annot_pragma_openmp_end.
(void)ConsumeAnnotationToken();
}
/// Parse a list of interop-types. These are 'target' and 'targetsync'. Both
/// are allowed but duplication of either is not meaningful.
static Optional<OMPDeclareVariantAttr::InteropType>
parseInteropTypeList(Parser &P) {
const Token &Tok = P.getCurToken();
bool HasError = false;
bool IsTarget = false;
bool IsTargetSync = false;
while (Tok.is(tok::identifier)) {
if (Tok.getIdentifierInfo()->isStr("target")) {
// OpenMP 5.1 [2.15.1, interop Construct, Restrictions]
// Each interop-type may be specified on an action-clause at most
// once.
if (IsTarget)
P.Diag(Tok, diag::warn_omp_more_one_interop_type) << "target";
IsTarget = true;
} else if (Tok.getIdentifierInfo()->isStr("targetsync")) {
if (IsTargetSync)
P.Diag(Tok, diag::warn_omp_more_one_interop_type) << "targetsync";
IsTargetSync = true;
} else {
HasError = true;
P.Diag(Tok, diag::err_omp_expected_interop_type);
}
P.ConsumeToken();
if (!Tok.is(tok::comma))
break;
P.ConsumeToken();
}
if (HasError)
return None;
if (!IsTarget && !IsTargetSync) {
P.Diag(Tok, diag::err_omp_expected_interop_type);
return None;
}
// As of OpenMP 5.1,there are two interop-types, "target" and
// "targetsync". Either or both are allowed for a single interop.
if (IsTarget && IsTargetSync)
return OMPDeclareVariantAttr::Target_TargetSync;
if (IsTarget)
return OMPDeclareVariantAttr::Target;
return OMPDeclareVariantAttr::TargetSync;
}
bool Parser::parseOpenMPAppendArgs(
SmallVectorImpl<OMPDeclareVariantAttr::InteropType> &InterOpTypes) {
bool HasError = false;
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(OMPC_append_args).data()))
return true;
// Parse the list of append-ops, each is;
// interop(interop-type[,interop-type]...)
while (Tok.is(tok::identifier) && Tok.getIdentifierInfo()->isStr("interop")) {
ConsumeToken();
BalancedDelimiterTracker IT(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
if (IT.expectAndConsume(diag::err_expected_lparen_after, "interop"))
return true;
// Parse the interop-types.
if (Optional<OMPDeclareVariantAttr::InteropType> IType =
parseInteropTypeList(*this))
InterOpTypes.push_back(IType.getValue());
else
HasError = true;
IT.consumeClose();
if (Tok.is(tok::comma))
ConsumeToken();
}
if (!HasError && InterOpTypes.empty()) {
HasError = true;
Diag(Tok.getLocation(), diag::err_omp_unexpected_append_op);
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
HasError = T.consumeClose() || HasError;
return HasError;
}
bool Parser::parseOMPDeclareVariantMatchClause(SourceLocation Loc,
OMPTraitInfo &TI,
OMPTraitInfo *ParentTI) {
// Parse 'match'.
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
if (CKind != OMPC_match) {
Diag(Tok.getLocation(), diag::err_omp_declare_variant_wrong_clause)
<< (getLangOpts().OpenMP < 51 ? 0 : 1);
return true;
}
(void)ConsumeToken();
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(OMPC_match).data()))
return true;
// Parse inner context selectors.
parseOMPContextSelectors(Loc, TI);
// Parse ')'
(void)T.consumeClose();
if (!ParentTI)
return false;
// Merge the parent/outer trait info into the one we just parsed and diagnose
// problems.
// TODO: Keep some source location in the TI to provide better diagnostics.
// TODO: Perform some kind of equivalence check on the condition and score
// expressions.
for (const OMPTraitSet &ParentSet : ParentTI->Sets) {
bool MergedSet = false;
for (OMPTraitSet &Set : TI.Sets) {
if (Set.Kind != ParentSet.Kind)
continue;
MergedSet = true;
for (const OMPTraitSelector &ParentSelector : ParentSet.Selectors) {
bool MergedSelector = false;
for (OMPTraitSelector &Selector : Set.Selectors) {
if (Selector.Kind != ParentSelector.Kind)
continue;
MergedSelector = true;
for (const OMPTraitProperty &ParentProperty :
ParentSelector.Properties) {
bool MergedProperty = false;
for (OMPTraitProperty &Property : Selector.Properties) {
// Ignore "equivalent" properties.
if (Property.Kind != ParentProperty.Kind)
continue;
// If the kind is the same but the raw string not, we don't want
// to skip out on the property.
MergedProperty |= Property.RawString == ParentProperty.RawString;
if (Property.RawString == ParentProperty.RawString &&
Selector.ScoreOrCondition == ParentSelector.ScoreOrCondition)
continue;
if (Selector.Kind == llvm::omp::TraitSelector::user_condition) {
Diag(Loc, diag::err_omp_declare_variant_nested_user_condition);
} else if (Selector.ScoreOrCondition !=
ParentSelector.ScoreOrCondition) {
Diag(Loc, diag::err_omp_declare_variant_duplicate_nested_trait)
<< getOpenMPContextTraitPropertyName(
ParentProperty.Kind, ParentProperty.RawString)
<< getOpenMPContextTraitSelectorName(ParentSelector.Kind)
<< getOpenMPContextTraitSetName(ParentSet.Kind);
}
}
if (!MergedProperty)
Selector.Properties.push_back(ParentProperty);
}
}
if (!MergedSelector)
Set.Selectors.push_back(ParentSelector);
}
}
if (!MergedSet)
TI.Sets.push_back(ParentSet);
}
return false;
}
/// `omp assumes` or `omp begin/end assumes` <clause> [[,]<clause>]...
/// where
///
/// clause:
/// 'ext_IMPL_DEFINED'
/// 'absent' '(' directive-name [, directive-name]* ')'
/// 'contains' '(' directive-name [, directive-name]* ')'
/// 'holds' '(' scalar-expression ')'
/// 'no_openmp'
/// 'no_openmp_routines'
/// 'no_parallelism'
///
void Parser::ParseOpenMPAssumesDirective(OpenMPDirectiveKind DKind,
SourceLocation Loc) {
SmallVector<std::string, 4> Assumptions;
bool SkippedClauses = false;
auto SkipBraces = [&](llvm::StringRef Spelling, bool IssueNote) {
BalancedDelimiterTracker T(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after, Spelling.data()))
return;
T.skipToEnd();
if (IssueNote && T.getCloseLocation().isValid())
Diag(T.getCloseLocation(),
diag::note_omp_assumption_clause_continue_here);
};
/// Helper to determine which AssumptionClauseMapping (ACM) in the
/// AssumptionClauseMappings table matches \p RawString. The return value is
/// the index of the matching ACM into the table or -1 if there was no match.
auto MatchACMClause = [&](StringRef RawString) {
llvm::StringSwitch<int> SS(RawString);
unsigned ACMIdx = 0;
for (const AssumptionClauseMappingInfo &ACMI : AssumptionClauseMappings) {
if (ACMI.StartsWith)
SS.StartsWith(ACMI.Identifier, ACMIdx++);
else
SS.Case(ACMI.Identifier, ACMIdx++);
}
return SS.Default(-1);
};
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
IdentifierInfo *II = nullptr;
SourceLocation StartLoc = Tok.getLocation();
int Idx = -1;
if (Tok.isAnyIdentifier()) {
II = Tok.getIdentifierInfo();
Idx = MatchACMClause(II->getName());
}
ConsumeAnyToken();
bool NextIsLPar = Tok.is(tok::l_paren);
// Handle unknown clauses by skipping them.
if (Idx == -1) {
Diag(StartLoc, diag::warn_omp_unknown_assumption_clause_missing_id)
<< llvm::omp::getOpenMPDirectiveName(DKind)
<< llvm::omp::getAllAssumeClauseOptions() << NextIsLPar;
if (NextIsLPar)
SkipBraces(II ? II->getName() : "", /* IssueNote */ true);
SkippedClauses = true;
continue;
}
const AssumptionClauseMappingInfo &ACMI = AssumptionClauseMappings[Idx];
if (ACMI.HasDirectiveList || ACMI.HasExpression) {
// TODO: We ignore absent, contains, and holds assumptions for now. We
// also do not verify the content in the parenthesis at all.
SkippedClauses = true;
SkipBraces(II->getName(), /* IssueNote */ false);
continue;
}
if (NextIsLPar) {
Diag(Tok.getLocation(),
diag::warn_omp_unknown_assumption_clause_without_args)
<< II;
SkipBraces(II->getName(), /* IssueNote */ true);
}
assert(II && "Expected an identifier clause!");
std::string Assumption = II->getName().str();
if (ACMI.StartsWith)
Assumption = "ompx_" + Assumption.substr(ACMI.Identifier.size());
else
Assumption = "omp_" + Assumption;
Assumptions.push_back(Assumption);
}
Actions.ActOnOpenMPAssumesDirective(Loc, DKind, Assumptions, SkippedClauses);
}
void Parser::ParseOpenMPEndAssumesDirective(SourceLocation Loc) {
if (Actions.isInOpenMPAssumeScope())
Actions.ActOnOpenMPEndAssumesDirective();
else
Diag(Loc, diag::err_expected_begin_assumes);
}
/// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'.
///
/// default-clause:
/// 'default' '(' 'none' | 'shared' | 'firstprivate' ')
///
/// proc_bind-clause:
/// 'proc_bind' '(' 'master' | 'close' | 'spread' ')
///
/// device_type-clause:
/// 'device_type' '(' 'host' | 'nohost' | 'any' )'
namespace {
struct SimpleClauseData {
unsigned Type;
SourceLocation Loc;
SourceLocation LOpen;
SourceLocation TypeLoc;
SourceLocation RLoc;
SimpleClauseData(unsigned Type, SourceLocation Loc, SourceLocation LOpen,
SourceLocation TypeLoc, SourceLocation RLoc)
: Type(Type), Loc(Loc), LOpen(LOpen), TypeLoc(TypeLoc), RLoc(RLoc) {}
};
} // anonymous namespace
static Optional<SimpleClauseData>
parseOpenMPSimpleClause(Parser &P, OpenMPClauseKind Kind) {
const Token &Tok = P.getCurToken();
SourceLocation Loc = Tok.getLocation();
SourceLocation LOpen = P.ConsumeToken();
// Parse '('.
BalancedDelimiterTracker T(P, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(Kind).data()))
return llvm::None;
unsigned Type = getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : P.getPreprocessor().getSpelling(Tok),
P.getLangOpts());
SourceLocation TypeLoc = Tok.getLocation();
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
P.ConsumeAnyToken();
// Parse ')'.
SourceLocation RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
return SimpleClauseData(Type, Loc, LOpen, TypeLoc, RLoc);
}
void Parser::ParseOMPDeclareTargetClauses(
Sema::DeclareTargetContextInfo &DTCI) {
SourceLocation DeviceTypeLoc;
bool RequiresToOrLinkClause = false;
bool HasToOrLinkClause = false;
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OMPDeclareTargetDeclAttr::MapTypeTy MT = OMPDeclareTargetDeclAttr::MT_To;
bool HasIdentifier = Tok.is(tok::identifier);
if (HasIdentifier) {
// If we see any clause we need a to or link clause.
RequiresToOrLinkClause = true;
IdentifierInfo *II = Tok.getIdentifierInfo();
StringRef ClauseName = II->getName();
bool IsDeviceTypeClause =
getLangOpts().OpenMP >= 50 &&
getOpenMPClauseKind(ClauseName) == OMPC_device_type;
bool IsToOrLinkClause =
OMPDeclareTargetDeclAttr::ConvertStrToMapTypeTy(ClauseName, MT);
assert((!IsDeviceTypeClause || !IsToOrLinkClause) && "Cannot be both!");
if (!IsDeviceTypeClause && DTCI.Kind == OMPD_begin_declare_target) {
Diag(Tok, diag::err_omp_declare_target_unexpected_clause)
<< ClauseName << 0;
break;
}
if (!IsDeviceTypeClause && !IsToOrLinkClause) {
Diag(Tok, diag::err_omp_declare_target_unexpected_clause)
<< ClauseName << (getLangOpts().OpenMP >= 50 ? 2 : 1);
break;
}
if (IsToOrLinkClause)
HasToOrLinkClause = true;
// Parse 'device_type' clause and go to next clause if any.
if (IsDeviceTypeClause) {
Optional<SimpleClauseData> DevTypeData =
parseOpenMPSimpleClause(*this, OMPC_device_type);
if (DevTypeData.hasValue()) {
if (DeviceTypeLoc.isValid()) {
// We already saw another device_type clause, diagnose it.
Diag(DevTypeData.getValue().Loc,
diag::warn_omp_more_one_device_type_clause);
break;
}
switch (static_cast<OpenMPDeviceType>(DevTypeData.getValue().Type)) {
case OMPC_DEVICE_TYPE_any:
DTCI.DT = OMPDeclareTargetDeclAttr::DT_Any;
break;
case OMPC_DEVICE_TYPE_host:
DTCI.DT = OMPDeclareTargetDeclAttr::DT_Host;
break;
case OMPC_DEVICE_TYPE_nohost:
DTCI.DT = OMPDeclareTargetDeclAttr::DT_NoHost;
break;
case OMPC_DEVICE_TYPE_unknown:
llvm_unreachable("Unexpected device_type");
}
DeviceTypeLoc = DevTypeData.getValue().Loc;
}
continue;
}
ConsumeToken();
}
if (DTCI.Kind == OMPD_declare_target || HasIdentifier) {
auto &&Callback = [this, MT, &DTCI](CXXScopeSpec &SS,
DeclarationNameInfo NameInfo) {
NamedDecl *ND =
Actions.lookupOpenMPDeclareTargetName(getCurScope(), SS, NameInfo);
if (!ND)
return;
Sema::DeclareTargetContextInfo::MapInfo MI{MT, NameInfo.getLoc()};
bool FirstMapping = DTCI.ExplicitlyMapped.try_emplace(ND, MI).second;
if (!FirstMapping)
Diag(NameInfo.getLoc(), diag::err_omp_declare_target_multiple)
<< NameInfo.getName();
};
if (ParseOpenMPSimpleVarList(OMPD_declare_target, Callback,
/*AllowScopeSpecifier=*/true))
break;
}
if (Tok.is(tok::l_paren)) {
Diag(Tok,
diag::err_omp_begin_declare_target_unexpected_implicit_to_clause);
break;
}
if (!HasIdentifier && Tok.isNot(tok::annot_pragma_openmp_end)) {
Diag(Tok,
diag::err_omp_declare_target_unexpected_clause_after_implicit_to);
break;
}
// Consume optional ','.
if (Tok.is(tok::comma))
ConsumeToken();
}
// For declare target require at least 'to' or 'link' to be present.
if (DTCI.Kind == OMPD_declare_target && RequiresToOrLinkClause &&
!HasToOrLinkClause)
Diag(DTCI.Loc, diag::err_omp_declare_target_missing_to_or_link_clause);
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
}
void Parser::skipUntilPragmaOpenMPEnd(OpenMPDirectiveKind DKind) {
// The last seen token is annot_pragma_openmp_end - need to check for
// extra tokens.
if (Tok.is(tok::annot_pragma_openmp_end))
return;
Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
<< getOpenMPDirectiveName(DKind);
while (Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
}
void Parser::parseOMPEndDirective(OpenMPDirectiveKind BeginKind,
OpenMPDirectiveKind ExpectedKind,
OpenMPDirectiveKind FoundKind,
SourceLocation BeginLoc,
SourceLocation FoundLoc,
bool SkipUntilOpenMPEnd) {
int DiagSelection = ExpectedKind == OMPD_end_declare_target ? 0 : 1;
if (FoundKind == ExpectedKind) {
ConsumeAnyToken();
skipUntilPragmaOpenMPEnd(ExpectedKind);
return;
}
Diag(FoundLoc, diag::err_expected_end_declare_target_or_variant)
<< DiagSelection;
Diag(BeginLoc, diag::note_matching)
<< ("'#pragma omp " + getOpenMPDirectiveName(BeginKind) + "'").str();
if (SkipUntilOpenMPEnd)
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
}
void Parser::ParseOMPEndDeclareTargetDirective(OpenMPDirectiveKind BeginDKind,
OpenMPDirectiveKind EndDKind,
SourceLocation DKLoc) {
parseOMPEndDirective(BeginDKind, OMPD_end_declare_target, EndDKind, DKLoc,
Tok.getLocation(),
/* SkipUntilOpenMPEnd */ false);
// Skip the last annot_pragma_openmp_end.
if (Tok.is(tok::annot_pragma_openmp_end))
ConsumeAnnotationToken();
}
/// Parsing of declarative OpenMP directives.
///
/// threadprivate-directive:
/// annot_pragma_openmp 'threadprivate' simple-variable-list
/// annot_pragma_openmp_end
///
/// allocate-directive:
/// annot_pragma_openmp 'allocate' simple-variable-list [<clause>]
/// annot_pragma_openmp_end
///
/// declare-reduction-directive:
/// annot_pragma_openmp 'declare' 'reduction' [...]
/// annot_pragma_openmp_end
///
/// declare-mapper-directive:
/// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':']
/// <type> <var> ')' [<clause>[[,] <clause>] ... ]
/// annot_pragma_openmp_end
///
/// declare-simd-directive:
/// annot_pragma_openmp 'declare simd' {<clause> [,]}
/// annot_pragma_openmp_end
/// <function declaration/definition>
///
/// requires directive:
/// annot_pragma_openmp 'requires' <clause> [[[,] <clause>] ... ]
/// annot_pragma_openmp_end
///
/// assumes directive:
/// annot_pragma_openmp 'assumes' <clause> [[[,] <clause>] ... ]
/// annot_pragma_openmp_end
/// or
/// annot_pragma_openmp 'begin assumes' <clause> [[[,] <clause>] ... ]
/// annot_pragma_openmp 'end assumes'
/// annot_pragma_openmp_end
///
Parser::DeclGroupPtrTy Parser::ParseOpenMPDeclarativeDirectiveWithExtDecl(
AccessSpecifier &AS, ParsedAttributesWithRange &Attrs, bool Delayed,
DeclSpec::TST TagType, Decl *Tag) {
assert(Tok.isOneOf(tok::annot_pragma_openmp, tok::annot_attr_openmp) &&
"Not an OpenMP directive!");
ParsingOpenMPDirectiveRAII DirScope(*this);
ParenBraceBracketBalancer BalancerRAIIObj(*this);
SourceLocation Loc;
OpenMPDirectiveKind DKind;
if (Delayed) {
TentativeParsingAction TPA(*this);
Loc = ConsumeAnnotationToken();
DKind = parseOpenMPDirectiveKind(*this);
if (DKind == OMPD_declare_reduction || DKind == OMPD_declare_mapper) {
// Need to delay parsing until completion of the parent class.
TPA.Revert();
CachedTokens Toks;
unsigned Cnt = 1;
Toks.push_back(Tok);
while (Cnt && Tok.isNot(tok::eof)) {
(void)ConsumeAnyToken();
if (Tok.isOneOf(tok::annot_pragma_openmp, tok::annot_attr_openmp))
++Cnt;
else if (Tok.is(tok::annot_pragma_openmp_end))
--Cnt;
Toks.push_back(Tok);
}
// Skip last annot_pragma_openmp_end.
if (Cnt == 0)
(void)ConsumeAnyToken();
auto *LP = new LateParsedPragma(this, AS);
LP->takeToks(Toks);
getCurrentClass().LateParsedDeclarations.push_back(LP);
return nullptr;
}
TPA.Commit();
} else {
Loc = ConsumeAnnotationToken();
DKind = parseOpenMPDirectiveKind(*this);
}
switch (DKind) {
case OMPD_threadprivate: {
ConsumeToken();
DeclDirectiveListParserHelper Helper(this, DKind);
if (!ParseOpenMPSimpleVarList(DKind, Helper,
/*AllowScopeSpecifier=*/true)) {
skipUntilPragmaOpenMPEnd(DKind);
// Skip the last annot_pragma_openmp_end.
ConsumeAnnotationToken();
return Actions.ActOnOpenMPThreadprivateDirective(Loc,
Helper.getIdentifiers());
}
break;
}
case OMPD_allocate: {
ConsumeToken();
DeclDirectiveListParserHelper Helper(this, DKind);
if (!ParseOpenMPSimpleVarList(DKind, Helper,
/*AllowScopeSpecifier=*/true)) {
SmallVector<OMPClause *, 1> Clauses;
if (Tok.isNot(tok::annot_pragma_openmp_end)) {
SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>,
llvm::omp::Clause_enumSize + 1>
FirstClauses(llvm::omp::Clause_enumSize + 1);
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind =
Tok.isAnnotation() ? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
Actions.StartOpenMPClause(CKind);
OMPClause *Clause = ParseOpenMPClause(
OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt());
SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end,
StopBeforeMatch);
FirstClauses[unsigned(CKind)].setInt(true);
if (Clause != nullptr)
Clauses.push_back(Clause);
if (Tok.is(tok::annot_pragma_openmp_end)) {
Actions.EndOpenMPClause();
break;
}
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
Actions.EndOpenMPClause();
}
skipUntilPragmaOpenMPEnd(DKind);
}
// Skip the last annot_pragma_openmp_end.
ConsumeAnnotationToken();
return Actions.ActOnOpenMPAllocateDirective(Loc, Helper.getIdentifiers(),
Clauses);
}
break;
}
case OMPD_requires: {
SourceLocation StartLoc = ConsumeToken();
SmallVector<OMPClause *, 5> Clauses;
SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>,
llvm::omp::Clause_enumSize + 1>
FirstClauses(llvm::omp::Clause_enumSize + 1);
if (Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok, diag::err_omp_expected_clause)
<< getOpenMPDirectiveName(OMPD_requires);
break;
}
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
Actions.StartOpenMPClause(CKind);
OMPClause *Clause = ParseOpenMPClause(
OMPD_requires, CKind, !FirstClauses[unsigned(CKind)].getInt());
SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end,
StopBeforeMatch);
FirstClauses[unsigned(CKind)].setInt(true);
if (Clause != nullptr)
Clauses.push_back(Clause);
if (Tok.is(tok::annot_pragma_openmp_end)) {
Actions.EndOpenMPClause();
break;
}
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
Actions.EndOpenMPClause();
}
// Consume final annot_pragma_openmp_end
if (Clauses.empty()) {
Diag(Tok, diag::err_omp_expected_clause)
<< getOpenMPDirectiveName(OMPD_requires);
ConsumeAnnotationToken();
return nullptr;
}
ConsumeAnnotationToken();
return Actions.ActOnOpenMPRequiresDirective(StartLoc, Clauses);
}
case OMPD_assumes:
case OMPD_begin_assumes:
ParseOpenMPAssumesDirective(DKind, ConsumeToken());
break;
case OMPD_end_assumes:
ParseOpenMPEndAssumesDirective(ConsumeToken());
break;
case OMPD_declare_reduction:
ConsumeToken();
if (DeclGroupPtrTy Res = ParseOpenMPDeclareReductionDirective(AS)) {
skipUntilPragmaOpenMPEnd(OMPD_declare_reduction);
// Skip the last annot_pragma_openmp_end.
ConsumeAnnotationToken();
return Res;
}
break;
case OMPD_declare_mapper: {
ConsumeToken();
if (DeclGroupPtrTy Res = ParseOpenMPDeclareMapperDirective(AS)) {
// Skip the last annot_pragma_openmp_end.
ConsumeAnnotationToken();
return Res;
}
break;
}
case OMPD_begin_declare_variant: {
// The syntax is:
// { #pragma omp begin declare variant clause }
// <function-declaration-or-definition-sequence>
// { #pragma omp end declare variant }
//
ConsumeToken();
OMPTraitInfo *ParentTI = Actions.getOMPTraitInfoForSurroundingScope();
ASTContext &ASTCtx = Actions.getASTContext();
OMPTraitInfo &TI = ASTCtx.getNewOMPTraitInfo();
if (parseOMPDeclareVariantMatchClause(Loc, TI, ParentTI)) {
while (!SkipUntil(tok::annot_pragma_openmp_end, Parser::StopBeforeMatch))
;
// Skip the last annot_pragma_openmp_end.
(void)ConsumeAnnotationToken();
break;
}
// Skip last tokens.
skipUntilPragmaOpenMPEnd(OMPD_begin_declare_variant);
ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false);
VariantMatchInfo VMI;
TI.getAsVariantMatchInfo(ASTCtx, VMI);
std::function<void(StringRef)> DiagUnknownTrait = [this, Loc](
StringRef ISATrait) {
// TODO Track the selector locations in a way that is accessible here to
// improve the diagnostic location.
Diag(Loc, diag::warn_unknown_begin_declare_variant_isa_trait) << ISATrait;
};
TargetOMPContext OMPCtx(
ASTCtx, std::move(DiagUnknownTrait),
/* CurrentFunctionDecl */ nullptr,
/* ConstructTraits */ ArrayRef<llvm::omp::TraitProperty>());
if (isVariantApplicableInContext(VMI, OMPCtx, /* DeviceSetOnly */ true)) {
Actions.ActOnOpenMPBeginDeclareVariant(Loc, TI);
break;
}
// Elide all the code till the matching end declare variant was found.
unsigned Nesting = 1;
SourceLocation DKLoc;
OpenMPDirectiveKind DK = OMPD_unknown;
do {
DKLoc = Tok.getLocation();
DK = parseOpenMPDirectiveKind(*this);
if (DK == OMPD_end_declare_variant)
--Nesting;
else if (DK == OMPD_begin_declare_variant)
++Nesting;
if (!Nesting || isEofOrEom())
break;
ConsumeAnyToken();
} while (true);
parseOMPEndDirective(OMPD_begin_declare_variant, OMPD_end_declare_variant,
DK, Loc, DKLoc, /* SkipUntilOpenMPEnd */ true);
if (isEofOrEom())
return nullptr;
break;
}
case OMPD_end_declare_variant: {
if (Actions.isInOpenMPDeclareVariantScope())
Actions.ActOnOpenMPEndDeclareVariant();
else
Diag(Loc, diag::err_expected_begin_declare_variant);
ConsumeToken();
break;
}
case OMPD_declare_variant:
case OMPD_declare_simd: {
// The syntax is:
// { #pragma omp declare {simd|variant} }
// <function-declaration-or-definition>
//
CachedTokens Toks;
Toks.push_back(Tok);
ConsumeToken();
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
Toks.push_back(Tok);
ConsumeAnyToken();
}
Toks.push_back(Tok);
ConsumeAnyToken();
DeclGroupPtrTy Ptr;
if (Tok.isOneOf(tok::annot_pragma_openmp, tok::annot_attr_openmp)) {
Ptr = ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs, Delayed,
TagType, Tag);
} else if (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
// Here we expect to see some function declaration.
if (AS == AS_none) {
assert(TagType == DeclSpec::TST_unspecified);
MaybeParseCXX11Attributes(Attrs);
ParsingDeclSpec PDS(*this);
Ptr = ParseExternalDeclaration(Attrs, &PDS);
} else {
Ptr =
ParseCXXClassMemberDeclarationWithPragmas(AS, Attrs, TagType, Tag);
}
}
if (!Ptr) {
Diag(Loc, diag::err_omp_decl_in_declare_simd_variant)
<< (DKind == OMPD_declare_simd ? 0 : 1);
return DeclGroupPtrTy();
}
if (DKind == OMPD_declare_simd)
return ParseOMPDeclareSimdClauses(Ptr, Toks, Loc);
assert(DKind == OMPD_declare_variant &&
"Expected declare variant directive only");
ParseOMPDeclareVariantClauses(Ptr, Toks, Loc);
return Ptr;
}
case OMPD_begin_declare_target:
case OMPD_declare_target: {
SourceLocation DTLoc = ConsumeAnyToken();
bool HasClauses = Tok.isNot(tok::annot_pragma_openmp_end);
bool HasImplicitMappings =
DKind == OMPD_begin_declare_target || !HasClauses;
Sema::DeclareTargetContextInfo DTCI(DKind, DTLoc);
if (HasClauses)
ParseOMPDeclareTargetClauses(DTCI);
// Skip the last annot_pragma_openmp_end.
ConsumeAnyToken();
if (HasImplicitMappings) {
Actions.ActOnStartOpenMPDeclareTargetContext(DTCI);
return nullptr;
}
Actions.ActOnFinishedOpenMPDeclareTargetContext(DTCI);
llvm::SmallVector<Decl *, 4> Decls;
for (auto &It : DTCI.ExplicitlyMapped)
Decls.push_back(It.first);
return Actions.BuildDeclaratorGroup(Decls);
}
case OMPD_end_declare_target: {
if (!Actions.isInOpenMPDeclareTargetContext()) {
Diag(Tok, diag::err_omp_unexpected_directive)
<< 1 << getOpenMPDirectiveName(DKind);
break;
}
const Sema::DeclareTargetContextInfo &DTCI =
Actions.ActOnOpenMPEndDeclareTargetDirective();
ParseOMPEndDeclareTargetDirective(DTCI.Kind, DKind, DTCI.Loc);
return nullptr;
}
case OMPD_unknown:
Diag(Tok, diag::err_omp_unknown_directive);
break;
case OMPD_parallel:
case OMPD_simd:
case OMPD_tile:
case OMPD_unroll:
case OMPD_task:
case OMPD_taskyield:
case OMPD_barrier:
case OMPD_taskwait:
case OMPD_taskgroup:
case OMPD_flush:
case OMPD_depobj:
case OMPD_scan:
case OMPD_for:
case OMPD_for_simd:
case OMPD_sections:
case OMPD_section:
case OMPD_single:
case OMPD_master:
case OMPD_ordered:
case OMPD_critical:
case OMPD_parallel_for:
case OMPD_parallel_for_simd:
case OMPD_parallel_sections:
case OMPD_parallel_master:
case OMPD_atomic:
case OMPD_target:
case OMPD_teams:
case OMPD_cancellation_point:
case OMPD_cancel:
case OMPD_target_data:
case OMPD_target_enter_data:
case OMPD_target_exit_data:
case OMPD_target_parallel:
case OMPD_target_parallel_for:
case OMPD_taskloop:
case OMPD_taskloop_simd:
case OMPD_master_taskloop:
case OMPD_master_taskloop_simd:
case OMPD_parallel_master_taskloop:
case OMPD_parallel_master_taskloop_simd:
case OMPD_distribute:
case OMPD_target_update:
case OMPD_distribute_parallel_for:
case OMPD_distribute_parallel_for_simd:
case OMPD_distribute_simd:
case OMPD_target_parallel_for_simd:
case OMPD_target_simd:
case OMPD_teams_distribute:
case OMPD_teams_distribute_simd:
case OMPD_teams_distribute_parallel_for_simd:
case OMPD_teams_distribute_parallel_for:
case OMPD_target_teams:
case OMPD_target_teams_distribute:
case OMPD_target_teams_distribute_parallel_for:
case OMPD_target_teams_distribute_parallel_for_simd:
case OMPD_target_teams_distribute_simd:
case OMPD_dispatch:
case OMPD_masked:
case OMPD_metadirective:
case OMPD_loop:
Diag(Tok, diag::err_omp_unexpected_directive)
<< 1 << getOpenMPDirectiveName(DKind);
break;
default:
break;
}
while (Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
ConsumeAnyToken();
return nullptr;
}
/// Parsing of declarative or executable OpenMP directives.
///
/// threadprivate-directive:
/// annot_pragma_openmp 'threadprivate' simple-variable-list
/// annot_pragma_openmp_end
///
/// allocate-directive:
/// annot_pragma_openmp 'allocate' simple-variable-list
/// annot_pragma_openmp_end
///
/// declare-reduction-directive:
/// annot_pragma_openmp 'declare' 'reduction' '(' <reduction_id> ':'
/// <type> {',' <type>} ':' <expression> ')' ['initializer' '('
/// ('omp_priv' '=' <expression>|<function_call>) ')']
/// annot_pragma_openmp_end
///
/// declare-mapper-directive:
/// annot_pragma_openmp 'declare' 'mapper' '(' [<mapper-identifer> ':']
/// <type> <var> ')' [<clause>[[,] <clause>] ... ]
/// annot_pragma_openmp_end
///
/// executable-directive:
/// annot_pragma_openmp 'parallel' | 'simd' | 'for' | 'sections' |
/// 'section' | 'single' | 'master' | 'critical' [ '(' <name> ')' ] |
/// 'parallel for' | 'parallel sections' | 'parallel master' | 'task' |
/// 'taskyield' | 'barrier' | 'taskwait' | 'flush' | 'ordered' |
/// 'atomic' | 'for simd' | 'parallel for simd' | 'target' | 'target
/// data' | 'taskgroup' | 'teams' | 'taskloop' | 'taskloop simd' |
/// 'master taskloop' | 'master taskloop simd' | 'parallel master
/// taskloop' | 'parallel master taskloop simd' | 'distribute' | 'target
/// enter data' | 'target exit data' | 'target parallel' | 'target
/// parallel for' | 'target update' | 'distribute parallel for' |
/// 'distribute paralle for simd' | 'distribute simd' | 'target parallel
/// for simd' | 'target simd' | 'teams distribute' | 'teams distribute
/// simd' | 'teams distribute parallel for simd' | 'teams distribute
/// parallel for' | 'target teams' | 'target teams distribute' | 'target
/// teams distribute parallel for' | 'target teams distribute parallel
/// for simd' | 'target teams distribute simd' | 'masked' {clause}
/// annot_pragma_openmp_end
///
StmtResult
Parser::ParseOpenMPDeclarativeOrExecutableDirective(ParsedStmtContext StmtCtx) {
static bool ReadDirectiveWithinMetadirective = false;
if (!ReadDirectiveWithinMetadirective)
assert(Tok.isOneOf(tok::annot_pragma_openmp, tok::annot_attr_openmp) &&
"Not an OpenMP directive!");
ParsingOpenMPDirectiveRAII DirScope(*this);
ParenBraceBracketBalancer BalancerRAIIObj(*this);
SmallVector<OMPClause *, 5> Clauses;
SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>,
llvm::omp::Clause_enumSize + 1>
FirstClauses(llvm::omp::Clause_enumSize + 1);
unsigned ScopeFlags = Scope::FnScope | Scope::DeclScope |
Scope::CompoundStmtScope | Scope::OpenMPDirectiveScope;
SourceLocation Loc = ReadDirectiveWithinMetadirective
? Tok.getLocation()
: ConsumeAnnotationToken(),
EndLoc;
OpenMPDirectiveKind DKind = parseOpenMPDirectiveKind(*this);
if (ReadDirectiveWithinMetadirective && DKind == OMPD_unknown) {
Diag(Tok, diag::err_omp_unknown_directive);
return StmtError();
}
OpenMPDirectiveKind CancelRegion = OMPD_unknown;
// Name of critical directive.
DeclarationNameInfo DirName;
StmtResult Directive = StmtError();
bool HasAssociatedStatement = true;
switch (DKind) {
case OMPD_metadirective: {
ConsumeToken();
SmallVector<VariantMatchInfo, 4> VMIs;
// First iteration of parsing all clauses of metadirective.
// This iteration only parses and collects all context selector ignoring the
// associated directives.
TentativeParsingAction TPA(*this);
ASTContext &ASTContext = Actions.getASTContext();
BalancedDelimiterTracker T(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
SourceLocation Loc = ConsumeToken();
// Parse '('.
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(CKind).data()))
return Directive;
OMPTraitInfo &TI = Actions.getASTContext().getNewOMPTraitInfo();
if (CKind == OMPC_when) {
// parse and get OMPTraitInfo to pass to the When clause
parseOMPContextSelectors(Loc, TI);
if (TI.Sets.size() == 0) {
Diag(Tok, diag::err_omp_expected_context_selector) << "when clause";
TPA.Commit();
return Directive;
}
// Parse ':'
if (Tok.is(tok::colon))
ConsumeAnyToken();
else {
Diag(Tok, diag::err_omp_expected_colon) << "when clause";
TPA.Commit();
return Directive;
}
}
// Skip Directive for now. We will parse directive in the second iteration
int paren = 0;
while (Tok.isNot(tok::r_paren) || paren != 0) {
if (Tok.is(tok::l_paren))
paren++;
if (Tok.is(tok::r_paren))
paren--;
if (Tok.is(tok::annot_pragma_openmp_end)) {
Diag(Tok, diag::err_omp_expected_punc)
<< getOpenMPClauseName(CKind) << 0;
TPA.Commit();
return Directive;
}
ConsumeAnyToken();
}
// Parse ')'
if (Tok.is(tok::r_paren))
T.consumeClose();
VariantMatchInfo VMI;
TI.getAsVariantMatchInfo(ASTContext, VMI);
VMIs.push_back(VMI);
}
TPA.Revert();
// End of the first iteration. Parser is reset to the start of metadirective
TargetOMPContext OMPCtx(ASTContext, /* DiagUnknownTrait */ nullptr,
/* CurrentFunctionDecl */ nullptr,
ArrayRef<llvm::omp::TraitProperty>());
// A single match is returned for OpenMP 5.0
int BestIdx = getBestVariantMatchForContext(VMIs, OMPCtx);
int Idx = 0;
// In OpenMP 5.0 metadirective is either replaced by another directive or
// ignored.
// TODO: In OpenMP 5.1 generate multiple directives based upon the matches
// found by getBestWhenMatchForContext.
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
// OpenMP 5.0 implementation - Skip to the best index found.
if (Idx++ != BestIdx) {
ConsumeToken(); // Consume clause name
T.consumeOpen(); // Consume '('
int paren = 0;
// Skip everything inside the clause
while (Tok.isNot(tok::r_paren) || paren != 0) {
if (Tok.is(tok::l_paren))
paren++;
if (Tok.is(tok::r_paren))
paren--;
ConsumeAnyToken();
}
// Parse ')'
if (Tok.is(tok::r_paren))
T.consumeClose();
continue;
}
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
SourceLocation Loc = ConsumeToken();
// Parse '('.
T.consumeOpen();
// Skip ContextSelectors for when clause
if (CKind == OMPC_when) {
OMPTraitInfo &TI = Actions.getASTContext().getNewOMPTraitInfo();
// parse and skip the ContextSelectors
parseOMPContextSelectors(Loc, TI);
// Parse ':'
ConsumeAnyToken();
}
// If no directive is passed, skip in OpenMP 5.0.
// TODO: Generate nothing directive from OpenMP 5.1.
if (Tok.is(tok::r_paren)) {
SkipUntil(tok::annot_pragma_openmp_end);
break;
}
// Parse Directive
ReadDirectiveWithinMetadirective = true;
Directive = ParseOpenMPDeclarativeOrExecutableDirective(StmtCtx);
ReadDirectiveWithinMetadirective = false;
break;
}
break;
}
case OMPD_threadprivate: {
// FIXME: Should this be permitted in C++?
if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) ==
ParsedStmtContext()) {
Diag(Tok, diag::err_omp_immediate_directive)
<< getOpenMPDirectiveName(DKind) << 0;
}
ConsumeToken();
DeclDirectiveListParserHelper Helper(this, DKind);
if (!ParseOpenMPSimpleVarList(DKind, Helper,
/*AllowScopeSpecifier=*/false)) {
skipUntilPragmaOpenMPEnd(DKind);
DeclGroupPtrTy Res = Actions.ActOnOpenMPThreadprivateDirective(
Loc, Helper.getIdentifiers());
Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
}
SkipUntil(tok::annot_pragma_openmp_end);
break;
}
case OMPD_allocate: {
// FIXME: Should this be permitted in C++?
if ((StmtCtx & ParsedStmtContext::AllowDeclarationsInC) ==
ParsedStmtContext()) {
Diag(Tok, diag::err_omp_immediate_directive)
<< getOpenMPDirectiveName(DKind) << 0;
}
ConsumeToken();
DeclDirectiveListParserHelper Helper(this, DKind);
if (!ParseOpenMPSimpleVarList(DKind, Helper,
/*AllowScopeSpecifier=*/false)) {
SmallVector<OMPClause *, 1> Clauses;
if (Tok.isNot(tok::annot_pragma_openmp_end)) {
SmallVector<llvm::PointerIntPair<OMPClause *, 1, bool>,
llvm::omp::Clause_enumSize + 1>
FirstClauses(llvm::omp::Clause_enumSize + 1);
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
OpenMPClauseKind CKind =
Tok.isAnnotation() ? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
Actions.StartOpenMPClause(CKind);
OMPClause *Clause = ParseOpenMPClause(
OMPD_allocate, CKind, !FirstClauses[unsigned(CKind)].getInt());
SkipUntil(tok::comma, tok::identifier, tok::annot_pragma_openmp_end,
StopBeforeMatch);
FirstClauses[unsigned(CKind)].setInt(true);
if (Clause != nullptr)
Clauses.push_back(Clause);
if (Tok.is(tok::annot_pragma_openmp_end)) {
Actions.EndOpenMPClause();
break;
}
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
Actions.EndOpenMPClause();
}
skipUntilPragmaOpenMPEnd(DKind);
}
DeclGroupPtrTy Res = Actions.ActOnOpenMPAllocateDirective(
Loc, Helper.getIdentifiers(), Clauses);
Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
}
SkipUntil(tok::annot_pragma_openmp_end);
break;
}
case OMPD_declare_reduction:
ConsumeToken();
if (DeclGroupPtrTy Res =
ParseOpenMPDeclareReductionDirective(/*AS=*/AS_none)) {
skipUntilPragmaOpenMPEnd(OMPD_declare_reduction);
ConsumeAnyToken();
Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
} else {
SkipUntil(tok::annot_pragma_openmp_end);
}
break;
case OMPD_declare_mapper: {
ConsumeToken();
if (DeclGroupPtrTy Res =
ParseOpenMPDeclareMapperDirective(/*AS=*/AS_none)) {
// Skip the last annot_pragma_openmp_end.
ConsumeAnnotationToken();
Directive = Actions.ActOnDeclStmt(Res, Loc, Tok.getLocation());
} else {
SkipUntil(tok::annot_pragma_openmp_end);
}
break;
}
case OMPD_flush:
case OMPD_depobj:
case OMPD_scan:
case OMPD_taskyield:
case OMPD_barrier:
case OMPD_taskwait:
case OMPD_cancellation_point:
case OMPD_cancel:
case OMPD_target_enter_data:
case OMPD_target_exit_data:
case OMPD_target_update:
case OMPD_interop:
if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) ==
ParsedStmtContext()) {
Diag(Tok, diag::err_omp_immediate_directive)
<< getOpenMPDirectiveName(DKind) << 0;
}
HasAssociatedStatement = false;
// Fall through for further analysis.
LLVM_FALLTHROUGH;
case OMPD_parallel:
case OMPD_simd:
case OMPD_tile:
case OMPD_unroll:
case OMPD_for:
case OMPD_for_simd:
case OMPD_sections:
case OMPD_single:
case OMPD_section:
case OMPD_master:
case OMPD_critical:
case OMPD_parallel_for:
case OMPD_parallel_for_simd:
case OMPD_parallel_sections:
case OMPD_parallel_master:
case OMPD_task:
case OMPD_ordered:
case OMPD_atomic:
case OMPD_target:
case OMPD_teams:
case OMPD_taskgroup:
case OMPD_target_data:
case OMPD_target_parallel:
case OMPD_target_parallel_for:
case OMPD_loop:
case OMPD_taskloop:
case OMPD_taskloop_simd:
case OMPD_master_taskloop:
case OMPD_master_taskloop_simd:
case OMPD_parallel_master_taskloop:
case OMPD_parallel_master_taskloop_simd:
case OMPD_distribute:
case OMPD_distribute_parallel_for:
case OMPD_distribute_parallel_for_simd:
case OMPD_distribute_simd:
case OMPD_target_parallel_for_simd:
case OMPD_target_simd:
case OMPD_teams_distribute:
case OMPD_teams_distribute_simd:
case OMPD_teams_distribute_parallel_for_simd:
case OMPD_teams_distribute_parallel_for:
case OMPD_target_teams:
case OMPD_target_teams_distribute:
case OMPD_target_teams_distribute_parallel_for:
case OMPD_target_teams_distribute_parallel_for_simd:
case OMPD_target_teams_distribute_simd:
case OMPD_dispatch:
case OMPD_masked: {
// Special processing for flush and depobj clauses.
Token ImplicitTok;
bool ImplicitClauseAllowed = false;
if (DKind == OMPD_flush || DKind == OMPD_depobj) {
ImplicitTok = Tok;
ImplicitClauseAllowed = true;
}
ConsumeToken();
// Parse directive name of the 'critical' directive if any.
if (DKind == OMPD_critical) {
BalancedDelimiterTracker T(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
if (!T.consumeOpen()) {
if (Tok.isAnyIdentifier()) {
DirName =
DeclarationNameInfo(Tok.getIdentifierInfo(), Tok.getLocation());
ConsumeAnyToken();
} else {
Diag(Tok, diag::err_omp_expected_identifier_for_critical);
}
T.consumeClose();
}
} else if (DKind == OMPD_cancellation_point || DKind == OMPD_cancel) {
CancelRegion = parseOpenMPDirectiveKind(*this);
if (Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeToken();
}
if (isOpenMPLoopDirective(DKind))
ScopeFlags |= Scope::OpenMPLoopDirectiveScope;
if (isOpenMPSimdDirective(DKind))
ScopeFlags |= Scope::OpenMPSimdDirectiveScope;
ParseScope OMPDirectiveScope(this, ScopeFlags);
Actions.StartOpenMPDSABlock(DKind, DirName, Actions.getCurScope(), Loc);
while (Tok.isNot(tok::annot_pragma_openmp_end)) {
// If we are parsing for a directive within a metadirective, the directive
// ends with a ')'.
if (ReadDirectiveWithinMetadirective && Tok.is(tok::r_paren)) {
while (Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
break;
}
bool HasImplicitClause = false;
if (ImplicitClauseAllowed && Tok.is(tok::l_paren)) {
HasImplicitClause = true;
// Push copy of the current token back to stream to properly parse
// pseudo-clause OMPFlushClause or OMPDepobjClause.
PP.EnterToken(Tok, /*IsReinject*/ true);
PP.EnterToken(ImplicitTok, /*IsReinject*/ true);
ConsumeAnyToken();
}
OpenMPClauseKind CKind = Tok.isAnnotation()
? OMPC_unknown
: getOpenMPClauseKind(PP.getSpelling(Tok));
if (HasImplicitClause) {
assert(CKind == OMPC_unknown && "Must be unknown implicit clause.");
if (DKind == OMPD_flush) {
CKind = OMPC_flush;
} else {
assert(DKind == OMPD_depobj &&
"Expected flush or depobj directives.");
CKind = OMPC_depobj;
}
}
// No more implicit clauses allowed.
ImplicitClauseAllowed = false;
Actions.StartOpenMPClause(CKind);
HasImplicitClause = false;
OMPClause *Clause = ParseOpenMPClause(
DKind, CKind, !FirstClauses[unsigned(CKind)].getInt());
FirstClauses[unsigned(CKind)].setInt(true);
if (Clause) {
FirstClauses[unsigned(CKind)].setPointer(Clause);
Clauses.push_back(Clause);
}
// Skip ',' if any.
if (Tok.is(tok::comma))
ConsumeToken();
Actions.EndOpenMPClause();
}
// End location of the directive.
EndLoc = Tok.getLocation();
// Consume final annot_pragma_openmp_end.
ConsumeAnnotationToken();
// OpenMP [2.13.8, ordered Construct, Syntax]
// If the depend clause is specified, the ordered construct is a stand-alone
// directive.
if (DKind == OMPD_ordered && FirstClauses[unsigned(OMPC_depend)].getInt()) {
if ((StmtCtx & ParsedStmtContext::AllowStandaloneOpenMPDirectives) ==
ParsedStmtContext()) {
Diag(Loc, diag::err_omp_immediate_directive)
<< getOpenMPDirectiveName(DKind) << 1
<< getOpenMPClauseName(OMPC_depend);
}
HasAssociatedStatement = false;
}
if (DKind == OMPD_tile && !FirstClauses[unsigned(OMPC_sizes)].getInt()) {
Diag(Loc, diag::err_omp_required_clause)
<< getOpenMPDirectiveName(OMPD_tile) << "sizes";
}
StmtResult AssociatedStmt;
if (HasAssociatedStatement) {
// The body is a block scope like in Lambdas and Blocks.
Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
// FIXME: We create a bogus CompoundStmt scope to hold the contents of
// the captured region. Code elsewhere assumes that any FunctionScopeInfo
// should have at least one compound statement scope within it.
ParsingOpenMPDirectiveRAII NormalScope(*this, /*Value=*/false);
{
Sema::CompoundScopeRAII Scope(Actions);
AssociatedStmt = ParseStatement();
if (AssociatedStmt.isUsable() && isOpenMPLoopDirective(DKind) &&
getLangOpts().OpenMPIRBuilder)
AssociatedStmt = Actions.ActOnOpenMPLoopnest(AssociatedStmt.get());
}
AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
} else if (DKind == OMPD_target_update || DKind == OMPD_target_enter_data ||
DKind == OMPD_target_exit_data) {
Actions.ActOnOpenMPRegionStart(DKind, getCurScope());
AssociatedStmt = (Sema::CompoundScopeRAII(Actions),
Actions.ActOnCompoundStmt(Loc, Loc, llvm::None,
/*isStmtExpr=*/false));
AssociatedStmt = Actions.ActOnOpenMPRegionEnd(AssociatedStmt, Clauses);
}
Directive = Actions.ActOnOpenMPExecutableDirective(
DKind, DirName, CancelRegion, Clauses, AssociatedStmt.get(), Loc,
EndLoc);
// Exit scope.
Actions.EndOpenMPDSABlock(Directive.get());
OMPDirectiveScope.Exit();
break;
}
case OMPD_declare_simd:
case OMPD_declare_target:
case OMPD_begin_declare_target:
case OMPD_end_declare_target:
case OMPD_requires:
case OMPD_begin_declare_variant:
case OMPD_end_declare_variant:
case OMPD_declare_variant:
Diag(Tok, diag::err_omp_unexpected_directive)
<< 1 << getOpenMPDirectiveName(DKind);
SkipUntil(tok::annot_pragma_openmp_end);
break;
case OMPD_unknown:
default:
Diag(Tok, diag::err_omp_unknown_directive);
SkipUntil(tok::annot_pragma_openmp_end);
break;
}
return Directive;
}
// Parses simple list:
// simple-variable-list:
// '(' id-expression {, id-expression} ')'
//
bool Parser::ParseOpenMPSimpleVarList(
OpenMPDirectiveKind Kind,
const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)>
&Callback,
bool AllowScopeSpecifier) {
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPDirectiveName(Kind).data()))
return true;
bool IsCorrect = true;
bool NoIdentIsFound = true;
// Read tokens while ')' or annot_pragma_openmp_end is not found.
while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) {
CXXScopeSpec SS;
UnqualifiedId Name;
// Read var name.
Token PrevTok = Tok;
NoIdentIsFound = false;
if (AllowScopeSpecifier && getLangOpts().CPlusPlus &&
ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
/*ObjectHadErrors=*/false, false)) {
IsCorrect = false;
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
} else if (ParseUnqualifiedId(SS, /*ObjectType=*/nullptr,
/*ObjectHadErrors=*/false, false, false,
false, false, nullptr, Name)) {
IsCorrect = false;
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
} else if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren) &&
Tok.isNot(tok::annot_pragma_openmp_end)) {
IsCorrect = false;
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
Diag(PrevTok.getLocation(), diag::err_expected)
<< tok::identifier
<< SourceRange(PrevTok.getLocation(), PrevTokLocation);
} else {
Callback(SS, Actions.GetNameFromUnqualifiedId(Name));
}
// Consume ','.
if (Tok.is(tok::comma)) {
ConsumeToken();
}
}
if (NoIdentIsFound) {
Diag(Tok, diag::err_expected) << tok::identifier;
IsCorrect = false;
}
// Parse ')'.
IsCorrect = !T.consumeClose() && IsCorrect;
return !IsCorrect;
}
OMPClause *Parser::ParseOpenMPSizesClause() {
SourceLocation ClauseNameLoc = ConsumeToken();
SmallVector<Expr *, 4> ValExprs;
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.consumeOpen()) {
Diag(Tok, diag::err_expected) << tok::l_paren;
return nullptr;
}
while (true) {
ExprResult Val = ParseConstantExpression();
if (!Val.isUsable()) {
T.skipToEnd();
return nullptr;
}
ValExprs.push_back(Val.get());
if (Tok.is(tok::r_paren) || Tok.is(tok::annot_pragma_openmp_end))
break;
ExpectAndConsume(tok::comma);
}
T.consumeClose();
return Actions.ActOnOpenMPSizesClause(
ValExprs, ClauseNameLoc, T.getOpenLocation(), T.getCloseLocation());
}
OMPClause *Parser::ParseOpenMPUsesAllocatorClause(OpenMPDirectiveKind DKind) {
SourceLocation Loc = Tok.getLocation();
ConsumeAnyToken();
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after, "uses_allocator"))
return nullptr;
SmallVector<Sema::UsesAllocatorsData, 4> Data;
do {
ExprResult Allocator =
getLangOpts().CPlusPlus ? ParseCXXIdExpression() : ParseExpression();
if (Allocator.isInvalid()) {
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
break;
}
Sema::UsesAllocatorsData &D = Data.emplace_back();
D.Allocator = Allocator.get();
if (Tok.is(tok::l_paren)) {
BalancedDelimiterTracker T(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
T.consumeOpen();
ExprResult AllocatorTraits =
getLangOpts().CPlusPlus ? ParseCXXIdExpression() : ParseExpression();
T.consumeClose();
if (AllocatorTraits.isInvalid()) {
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
break;
}
D.AllocatorTraits = AllocatorTraits.get();
D.LParenLoc = T.getOpenLocation();
D.RParenLoc = T.getCloseLocation();
}
if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren))
Diag(Tok, diag::err_omp_expected_punc) << "uses_allocators" << 0;
// Parse ','
if (Tok.is(tok::comma))
ConsumeAnyToken();
} while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end));
T.consumeClose();
return Actions.ActOnOpenMPUsesAllocatorClause(Loc, T.getOpenLocation(),
T.getCloseLocation(), Data);
}
/// Parsing of OpenMP clauses.
///
/// clause:
/// if-clause | final-clause | num_threads-clause | safelen-clause |
/// default-clause | private-clause | firstprivate-clause | shared-clause
/// | linear-clause | aligned-clause | collapse-clause | bind-clause |
/// lastprivate-clause | reduction-clause | proc_bind-clause |
/// schedule-clause | copyin-clause | copyprivate-clause | untied-clause |
/// mergeable-clause | flush-clause | read-clause | write-clause |
/// update-clause | capture-clause | seq_cst-clause | device-clause |
/// simdlen-clause | threads-clause | simd-clause | num_teams-clause |
/// thread_limit-clause | priority-clause | grainsize-clause |
/// nogroup-clause | num_tasks-clause | hint-clause | to-clause |
/// from-clause | is_device_ptr-clause | task_reduction-clause |
/// in_reduction-clause | allocator-clause | allocate-clause |
/// acq_rel-clause | acquire-clause | release-clause | relaxed-clause |
/// depobj-clause | destroy-clause | detach-clause | inclusive-clause |
/// exclusive-clause | uses_allocators-clause | use_device_addr-clause
///
OMPClause *Parser::ParseOpenMPClause(OpenMPDirectiveKind DKind,
OpenMPClauseKind CKind, bool FirstClause) {
OMPClauseKind = CKind;
OMPClause *Clause = nullptr;
bool ErrorFound = false;
bool WrongDirective = false;
// Check if clause is allowed for the given directive.
if (CKind != OMPC_unknown &&
!isAllowedClauseForDirective(DKind, CKind, getLangOpts().OpenMP)) {
Diag(Tok, diag::err_omp_unexpected_clause)
<< getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind);
ErrorFound = true;
WrongDirective = true;
}
switch (CKind) {
case OMPC_final:
case OMPC_num_threads:
case OMPC_safelen:
case OMPC_simdlen:
case OMPC_collapse:
case OMPC_ordered:
case OMPC_num_teams:
case OMPC_thread_limit:
case OMPC_priority:
case OMPC_grainsize:
case OMPC_num_tasks:
case OMPC_hint:
case OMPC_allocator:
case OMPC_depobj:
case OMPC_detach:
case OMPC_novariants:
case OMPC_nocontext:
case OMPC_filter:
case OMPC_partial:
case OMPC_align:
// OpenMP [2.5, Restrictions]
// At most one num_threads clause can appear on the directive.
// OpenMP [2.8.1, simd construct, Restrictions]
// Only one safelen clause can appear on a simd directive.
// Only one simdlen clause can appear on a simd directive.
// Only one collapse clause can appear on a simd directive.
// OpenMP [2.11.1, task Construct, Restrictions]
// At most one if clause can appear on the directive.
// At most one final clause can appear on the directive.
// OpenMP [teams Construct, Restrictions]
// At most one num_teams clause can appear on the directive.
// At most one thread_limit clause can appear on the directive.
// OpenMP [2.9.1, task Construct, Restrictions]
// At most one priority clause can appear on the directive.
// OpenMP [2.9.2, taskloop Construct, Restrictions]
// At most one grainsize clause can appear on the directive.
// OpenMP [2.9.2, taskloop Construct, Restrictions]
// At most one num_tasks clause can appear on the directive.
// OpenMP [2.11.3, allocate Directive, Restrictions]
// At most one allocator clause can appear on the directive.
// OpenMP 5.0, 2.10.1 task Construct, Restrictions.
// At most one detach clause can appear on the directive.
// OpenMP 5.1, 2.3.6 dispatch Construct, Restrictions.
// At most one novariants clause can appear on a dispatch directive.
// At most one nocontext clause can appear on a dispatch directive.
if (!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
if ((CKind == OMPC_ordered || CKind == OMPC_partial) &&
PP.LookAhead(/*N=*/0).isNot(tok::l_paren))
Clause = ParseOpenMPClause(CKind, WrongDirective);
else
Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective);
break;
case OMPC_default:
case OMPC_proc_bind:
case OMPC_atomic_default_mem_order:
case OMPC_order:
case OMPC_bind:
// OpenMP [2.14.3.1, Restrictions]
// Only a single default clause may be specified on a parallel, task or
// teams directive.
// OpenMP [2.5, parallel Construct, Restrictions]
// At most one proc_bind clause can appear on the directive.
// OpenMP [5.0, Requires directive, Restrictions]
// At most one atomic_default_mem_order clause can appear
// on the directive
// OpenMP 5.1, 2.11.7 loop Construct, Restrictions.
// At most one bind clause can appear on a loop directive.
if (!FirstClause && CKind != OMPC_order) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
Clause = ParseOpenMPSimpleClause(CKind, WrongDirective);
break;
case OMPC_device:
case OMPC_schedule:
case OMPC_dist_schedule:
case OMPC_defaultmap:
// OpenMP [2.7.1, Restrictions, p. 3]
// Only one schedule clause can appear on a loop directive.
// OpenMP 4.5 [2.10.4, Restrictions, p. 106]
// At most one defaultmap clause can appear on the directive.
// OpenMP 5.0 [2.12.5, target construct, Restrictions]
// At most one device clause can appear on the directive.
if ((getLangOpts().OpenMP < 50 || CKind != OMPC_defaultmap) &&
!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
LLVM_FALLTHROUGH;
case OMPC_if:
Clause = ParseOpenMPSingleExprWithArgClause(DKind, CKind, WrongDirective);
break;
case OMPC_nowait:
case OMPC_untied:
case OMPC_mergeable:
case OMPC_read:
case OMPC_write:
case OMPC_capture:
case OMPC_seq_cst:
case OMPC_acq_rel:
case OMPC_acquire:
case OMPC_release:
case OMPC_relaxed:
case OMPC_threads:
case OMPC_simd:
case OMPC_nogroup:
case OMPC_unified_address:
case OMPC_unified_shared_memory:
case OMPC_reverse_offload:
case OMPC_dynamic_allocators:
case OMPC_full:
// OpenMP [2.7.1, Restrictions, p. 9]
// Only one ordered clause can appear on a loop directive.
// OpenMP [2.7.1, Restrictions, C/C++, p. 4]
// Only one nowait clause can appear on a for directive.
// OpenMP [5.0, Requires directive, Restrictions]
// Each of the requires clauses can appear at most once on the directive.
if (!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
Clause = ParseOpenMPClause(CKind, WrongDirective);
break;
case OMPC_update:
if (!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
Clause = (DKind == OMPD_depobj)
? ParseOpenMPSimpleClause(CKind, WrongDirective)
: ParseOpenMPClause(CKind, WrongDirective);
break;
case OMPC_private:
case OMPC_firstprivate:
case OMPC_lastprivate:
case OMPC_shared:
case OMPC_reduction:
case OMPC_task_reduction:
case OMPC_in_reduction:
case OMPC_linear:
case OMPC_aligned:
case OMPC_copyin:
case OMPC_copyprivate:
case OMPC_flush:
case OMPC_depend:
case OMPC_map:
case OMPC_to:
case OMPC_from:
case OMPC_use_device_ptr:
case OMPC_use_device_addr:
case OMPC_is_device_ptr:
case OMPC_allocate:
case OMPC_nontemporal:
case OMPC_inclusive:
case OMPC_exclusive:
case OMPC_affinity:
Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective);
break;
case OMPC_sizes:
if (!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
Clause = ParseOpenMPSizesClause();
break;
case OMPC_uses_allocators:
Clause = ParseOpenMPUsesAllocatorClause(DKind);
break;
case OMPC_destroy:
if (DKind != OMPD_interop) {
if (!FirstClause) {
Diag(Tok, diag::err_omp_more_one_clause)
<< getOpenMPDirectiveName(DKind) << getOpenMPClauseName(CKind) << 0;
ErrorFound = true;
}
Clause = ParseOpenMPClause(CKind, WrongDirective);
break;
}
LLVM_FALLTHROUGH;
case OMPC_init:
case OMPC_use:
Clause = ParseOpenMPInteropClause(CKind, WrongDirective);
break;
case OMPC_device_type:
case OMPC_unknown:
skipUntilPragmaOpenMPEnd(DKind);
break;
case OMPC_threadprivate:
case OMPC_uniform:
case OMPC_match:
if (!WrongDirective)
Diag(Tok, diag::err_omp_unexpected_clause)
<< getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind);
SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch);
break;
default:
break;
}
return ErrorFound ? nullptr : Clause;
}
/// Parses simple expression in parens for single-expression clauses of OpenMP
/// constructs.
/// \param RLoc Returned location of right paren.
ExprResult Parser::ParseOpenMPParensExpr(StringRef ClauseName,
SourceLocation &RLoc,
bool IsAddressOfOperand) {
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after, ClauseName.data()))
return ExprError();
SourceLocation ELoc = Tok.getLocation();
ExprResult LHS(
ParseCastExpression(AnyCastExpr, IsAddressOfOperand, NotTypeCast));
ExprResult Val(ParseRHSOfBinaryExpression(LHS, prec::Conditional));
Val = Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false);
// Parse ')'.
RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
return Val;
}
/// Parsing of OpenMP clauses with single expressions like 'final',
/// 'collapse', 'safelen', 'num_threads', 'simdlen', 'num_teams',
/// 'thread_limit', 'simdlen', 'priority', 'grainsize', 'num_tasks', 'hint' or
/// 'detach'.
///
/// final-clause:
/// 'final' '(' expression ')'
///
/// num_threads-clause:
/// 'num_threads' '(' expression ')'
///
/// safelen-clause:
/// 'safelen' '(' expression ')'
///
/// simdlen-clause:
/// 'simdlen' '(' expression ')'
///
/// collapse-clause:
/// 'collapse' '(' expression ')'
///
/// priority-clause:
/// 'priority' '(' expression ')'
///
/// grainsize-clause:
/// 'grainsize' '(' expression ')'
///
/// num_tasks-clause:
/// 'num_tasks' '(' expression ')'
///
/// hint-clause:
/// 'hint' '(' expression ')'
///
/// allocator-clause:
/// 'allocator' '(' expression ')'
///
/// detach-clause:
/// 'detach' '(' event-handler-expression ')'
///
/// align-clause
/// 'align' '(' positive-integer-constant ')'
///
OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind,
bool ParseOnly) {
SourceLocation Loc = ConsumeToken();
SourceLocation LLoc = Tok.getLocation();
SourceLocation RLoc;
ExprResult Val = ParseOpenMPParensExpr(getOpenMPClauseName(Kind), RLoc);
if (Val.isInvalid())
return nullptr;
if (ParseOnly)
return nullptr;
return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc);
}
/// Parsing of OpenMP clauses that use an interop-var.
///
/// init-clause:
/// init([interop-modifier, ]interop-type[[, interop-type] ... ]:interop-var)
///
/// destroy-clause:
/// destroy(interop-var)
///
/// use-clause:
/// use(interop-var)
///
/// interop-modifier:
/// prefer_type(preference-list)
///
/// preference-list:
/// foreign-runtime-id [, foreign-runtime-id]...
///
/// foreign-runtime-id:
/// <string-literal> | <constant-integral-expression>
///
/// interop-type:
/// target | targetsync
///
OMPClause *Parser::ParseOpenMPInteropClause(OpenMPClauseKind Kind,
bool ParseOnly) {
SourceLocation Loc = ConsumeToken();
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(Kind).data()))
return nullptr;
bool IsTarget = false;
bool IsTargetSync = false;
SmallVector<Expr *, 4> Prefs;
if (Kind == OMPC_init) {
// Parse optional interop-modifier.
if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "prefer_type") {
ConsumeToken();
BalancedDelimiterTracker PT(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
if (PT.expectAndConsume(diag::err_expected_lparen_after, "prefer_type"))
return nullptr;
while (Tok.isNot(tok::r_paren)) {
SourceLocation Loc = Tok.getLocation();
ExprResult LHS = ParseCastExpression(AnyCastExpr);
ExprResult PTExpr = Actions.CorrectDelayedTyposInExpr(
ParseRHSOfBinaryExpression(LHS, prec::Conditional));
PTExpr = Actions.ActOnFinishFullExpr(PTExpr.get(), Loc,
/*DiscardedValue=*/false);
if (PTExpr.isUsable())
Prefs.push_back(PTExpr.get());
else
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
if (Tok.is(tok::comma))
ConsumeToken();
}
PT.consumeClose();
}
if (!Prefs.empty()) {
if (Tok.is(tok::comma))
ConsumeToken();
else
Diag(Tok, diag::err_omp_expected_punc_after_interop_mod);
}
// Parse the interop-types.
if (Optional<OMPDeclareVariantAttr::InteropType> IType =
parseInteropTypeList(*this)) {
IsTarget = IType != OMPDeclareVariantAttr::TargetSync;
IsTargetSync = IType != OMPDeclareVariantAttr::Target;
if (Tok.isNot(tok::colon))
Diag(Tok, diag::warn_pragma_expected_colon) << "interop types";
}
if (Tok.is(tok::colon))
ConsumeToken();
}
// Parse the variable.
SourceLocation VarLoc = Tok.getLocation();
ExprResult InteropVarExpr =
Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
if (!InteropVarExpr.isUsable()) {
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
// Parse ')'.
SourceLocation RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
if (ParseOnly || !InteropVarExpr.isUsable() ||
(Kind == OMPC_init && !IsTarget && !IsTargetSync))
return nullptr;
if (Kind == OMPC_init)
return Actions.ActOnOpenMPInitClause(InteropVarExpr.get(), Prefs, IsTarget,
IsTargetSync, Loc, T.getOpenLocation(),
VarLoc, RLoc);
if (Kind == OMPC_use)
return Actions.ActOnOpenMPUseClause(InteropVarExpr.get(), Loc,
T.getOpenLocation(), VarLoc, RLoc);
if (Kind == OMPC_destroy)
return Actions.ActOnOpenMPDestroyClause(InteropVarExpr.get(), Loc,
T.getOpenLocation(), VarLoc, RLoc);
llvm_unreachable("Unexpected interop variable clause.");
}
/// Parsing of simple OpenMP clauses like 'default' or 'proc_bind'.
///
/// default-clause:
/// 'default' '(' 'none' | 'shared' | 'firstprivate' ')'
///
/// proc_bind-clause:
/// 'proc_bind' '(' 'master' | 'close' | 'spread' ')'
///
/// bind-clause:
/// 'bind' '(' 'teams' | 'parallel' | 'thread' ')'
///
/// update-clause:
/// 'update' '(' 'in' | 'out' | 'inout' | 'mutexinoutset' ')'
///
OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind,
bool ParseOnly) {
llvm::Optional<SimpleClauseData> Val = parseOpenMPSimpleClause(*this, Kind);
if (!Val || ParseOnly)
return nullptr;
if (getLangOpts().OpenMP < 51 && Kind == OMPC_default &&
static_cast<DefaultKind>(Val.getValue().Type) ==
OMP_DEFAULT_firstprivate) {
Diag(Val.getValue().LOpen, diag::err_omp_invalid_dsa)
<< getOpenMPClauseName(OMPC_firstprivate)
<< getOpenMPClauseName(OMPC_default) << "5.1";
return nullptr;
}
return Actions.ActOnOpenMPSimpleClause(
Kind, Val.getValue().Type, Val.getValue().TypeLoc, Val.getValue().LOpen,
Val.getValue().Loc, Val.getValue().RLoc);
}
/// Parsing of OpenMP clauses like 'ordered'.
///
/// ordered-clause:
/// 'ordered'
///
/// nowait-clause:
/// 'nowait'
///
/// untied-clause:
/// 'untied'
///
/// mergeable-clause:
/// 'mergeable'
///
/// read-clause:
/// 'read'
///
/// threads-clause:
/// 'threads'
///
/// simd-clause:
/// 'simd'
///
/// nogroup-clause:
/// 'nogroup'
///
OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) {
SourceLocation Loc = Tok.getLocation();
ConsumeAnyToken();
if (ParseOnly)
return nullptr;
return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation());
}
/// Parsing of OpenMP clauses with single expressions and some additional
/// argument like 'schedule' or 'dist_schedule'.
///
/// schedule-clause:
/// 'schedule' '(' [ modifier [ ',' modifier ] ':' ] kind [',' expression ]
/// ')'
///
/// if-clause:
/// 'if' '(' [ directive-name-modifier ':' ] expression ')'
///
/// defaultmap:
/// 'defaultmap' '(' modifier [ ':' kind ] ')'
///
/// device-clause:
/// 'device' '(' [ device-modifier ':' ] expression ')'
///
OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPDirectiveKind DKind,
OpenMPClauseKind Kind,
bool ParseOnly) {
SourceLocation Loc = ConsumeToken();
SourceLocation DelimLoc;
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(Kind).data()))
return nullptr;
ExprResult Val;
SmallVector<unsigned, 4> Arg;
SmallVector<SourceLocation, 4> KLoc;
if (Kind == OMPC_schedule) {
enum { Modifier1, Modifier2, ScheduleKind, NumberOfElements };
Arg.resize(NumberOfElements);
KLoc.resize(NumberOfElements);
Arg[Modifier1] = OMPC_SCHEDULE_MODIFIER_unknown;
Arg[Modifier2] = OMPC_SCHEDULE_MODIFIER_unknown;
Arg[ScheduleKind] = OMPC_SCHEDULE_unknown;
unsigned KindModifier = getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts());
if (KindModifier > OMPC_SCHEDULE_unknown) {
// Parse 'modifier'
Arg[Modifier1] = KindModifier;
KLoc[Modifier1] = Tok.getLocation();
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
if (Tok.is(tok::comma)) {
// Parse ',' 'modifier'
ConsumeAnyToken();
KindModifier = getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts());
Arg[Modifier2] = KindModifier > OMPC_SCHEDULE_unknown
? KindModifier
: (unsigned)OMPC_SCHEDULE_unknown;
KLoc[Modifier2] = Tok.getLocation();
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
}
// Parse ':'
if (Tok.is(tok::colon))
ConsumeAnyToken();
else
Diag(Tok, diag::warn_pragma_expected_colon) << "schedule modifier";
KindModifier = getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts());
}
Arg[ScheduleKind] = KindModifier;
KLoc[ScheduleKind] = Tok.getLocation();
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
if ((Arg[ScheduleKind] == OMPC_SCHEDULE_static ||
Arg[ScheduleKind] == OMPC_SCHEDULE_dynamic ||
Arg[ScheduleKind] == OMPC_SCHEDULE_guided) &&
Tok.is(tok::comma))
DelimLoc = ConsumeAnyToken();
} else if (Kind == OMPC_dist_schedule) {
Arg.push_back(getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts()));
KLoc.push_back(Tok.getLocation());
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
if (Arg.back() == OMPC_DIST_SCHEDULE_static && Tok.is(tok::comma))
DelimLoc = ConsumeAnyToken();
} else if (Kind == OMPC_defaultmap) {
// Get a defaultmap modifier
unsigned Modifier = getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts());
// Set defaultmap modifier to unknown if it is either scalar, aggregate, or
// pointer
if (Modifier < OMPC_DEFAULTMAP_MODIFIER_unknown)
Modifier = OMPC_DEFAULTMAP_MODIFIER_unknown;
Arg.push_back(Modifier);
KLoc.push_back(Tok.getLocation());
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
// Parse ':'
if (Tok.is(tok::colon) || getLangOpts().OpenMP < 50) {
if (Tok.is(tok::colon))
ConsumeAnyToken();
else if (Arg.back() != OMPC_DEFAULTMAP_MODIFIER_unknown)
Diag(Tok, diag::warn_pragma_expected_colon) << "defaultmap modifier";
// Get a defaultmap kind
Arg.push_back(getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts()));
KLoc.push_back(Tok.getLocation());
if (Tok.isNot(tok::r_paren) && Tok.isNot(tok::comma) &&
Tok.isNot(tok::annot_pragma_openmp_end))
ConsumeAnyToken();
} else {
Arg.push_back(OMPC_DEFAULTMAP_unknown);
KLoc.push_back(SourceLocation());
}
} else if (Kind == OMPC_device) {
// Only target executable directives support extended device construct.
if (isOpenMPTargetExecutionDirective(DKind) && getLangOpts().OpenMP >= 50 &&
NextToken().is(tok::colon)) {
// Parse optional <device modifier> ':'
Arg.push_back(getOpenMPSimpleClauseType(
Kind, Tok.isAnnotation() ? "" : PP.getSpelling(Tok), getLangOpts()));
KLoc.push_back(Tok.getLocation());
ConsumeAnyToken();
// Parse ':'
ConsumeAnyToken();
} else {
Arg.push_back(OMPC_DEVICE_unknown);
KLoc.emplace_back();
}
} else {
assert(Kind == OMPC_if);
KLoc.push_back(Tok.getLocation());
TentativeParsingAction TPA(*this);
auto DK = parseOpenMPDirectiveKind(*this);
Arg.push_back(DK);
if (DK != OMPD_unknown) {
ConsumeToken();
if (Tok.is(tok::colon) && getLangOpts().OpenMP > 40) {
TPA.Commit();
DelimLoc = ConsumeToken();
} else {
TPA.Revert();
Arg.back() = unsigned(OMPD_unknown);
}
} else {
TPA.Revert();
}
}
bool NeedAnExpression = (Kind == OMPC_schedule && DelimLoc.isValid()) ||
(Kind == OMPC_dist_schedule && DelimLoc.isValid()) ||
Kind == OMPC_if || Kind == OMPC_device;
if (NeedAnExpression) {
SourceLocation ELoc = Tok.getLocation();
ExprResult LHS(ParseCastExpression(AnyCastExpr, false, NotTypeCast));
Val = ParseRHSOfBinaryExpression(LHS, prec::Conditional);
Val =
Actions.ActOnFinishFullExpr(Val.get(), ELoc, /*DiscardedValue*/ false);
}
// Parse ')'.
SourceLocation RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
if (NeedAnExpression && Val.isInvalid())
return nullptr;
if (ParseOnly)
return nullptr;
return Actions.ActOnOpenMPSingleExprWithArgClause(
Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc, RLoc);
}
static bool ParseReductionId(Parser &P, CXXScopeSpec &ReductionIdScopeSpec,
UnqualifiedId &ReductionId) {
if (ReductionIdScopeSpec.isEmpty()) {
auto OOK = OO_None;
switch (P.getCurToken().getKind()) {
case tok::plus:
OOK = OO_Plus;
break;
case tok::minus:
OOK = OO_Minus;
break;
case tok::star:
OOK = OO_Star;
break;
case tok::amp:
OOK = OO_Amp;
break;
case tok::pipe:
OOK = OO_Pipe;
break;
case tok::caret:
OOK = OO_Caret;
break;
case tok::ampamp:
OOK = OO_AmpAmp;
break;
case tok::pipepipe:
OOK = OO_PipePipe;
break;
default:
break;
}
if (OOK != OO_None) {
SourceLocation OpLoc = P.ConsumeToken();
SourceLocation SymbolLocations[] = {OpLoc, OpLoc, SourceLocation()};
ReductionId.setOperatorFunctionId(OpLoc, OOK, SymbolLocations);
return false;
}
}
return P.ParseUnqualifiedId(
ReductionIdScopeSpec, /*ObjectType=*/nullptr,
/*ObjectHadErrors=*/false, /*EnteringContext*/ false,
/*AllowDestructorName*/ false,
/*AllowConstructorName*/ false,
/*AllowDeductionGuide*/ false, nullptr, ReductionId);
}
/// Checks if the token is a valid map-type-modifier.
/// FIXME: It will return an OpenMPMapClauseKind if that's what it parses.
static OpenMPMapModifierKind isMapModifier(Parser &P) {
Token Tok = P.getCurToken();
if (!Tok.is(tok::identifier))
return OMPC_MAP_MODIFIER_unknown;
Preprocessor &PP = P.getPreprocessor();
OpenMPMapModifierKind TypeModifier =
static_cast<OpenMPMapModifierKind>(getOpenMPSimpleClauseType(
OMPC_map, PP.getSpelling(Tok), P.getLangOpts()));
return TypeModifier;
}
/// Parse the mapper modifier in map, to, and from clauses.
bool Parser::parseMapperModifier(OpenMPVarListDataTy &Data) {
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::colon);
if (T.expectAndConsume(diag::err_expected_lparen_after, "mapper")) {
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
return true;
}
// Parse mapper-identifier
if (getLangOpts().CPlusPlus)
ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec,
/*ObjectType=*/nullptr,
/*ObjectHadErrors=*/false,
/*EnteringContext=*/false);
if (Tok.isNot(tok::identifier) && Tok.isNot(tok::kw_default)) {
Diag(Tok.getLocation(), diag::err_omp_mapper_illegal_identifier);
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
return true;
}
auto &DeclNames = Actions.getASTContext().DeclarationNames;
Data.ReductionOrMapperId = DeclarationNameInfo(
DeclNames.getIdentifier(Tok.getIdentifierInfo()), Tok.getLocation());
ConsumeToken();
// Parse ')'.
return T.consumeClose();
}
/// Parse map-type-modifiers in map clause.
/// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list)
/// where, map-type-modifier ::= always | close | mapper(mapper-identifier) |
/// present
bool Parser::parseMapTypeModifiers(OpenMPVarListDataTy &Data) {
while (getCurToken().isNot(tok::colon)) {
OpenMPMapModifierKind TypeModifier = isMapModifier(*this);
if (TypeModifier == OMPC_MAP_MODIFIER_always ||
TypeModifier == OMPC_MAP_MODIFIER_close ||
TypeModifier == OMPC_MAP_MODIFIER_present ||
TypeModifier == OMPC_MAP_MODIFIER_ompx_hold) {
Data.MapTypeModifiers.push_back(TypeModifier);
Data.MapTypeModifiersLoc.push_back(Tok.getLocation());
ConsumeToken();
} else if (TypeModifier == OMPC_MAP_MODIFIER_mapper) {
Data.MapTypeModifiers.push_back(TypeModifier);
Data.MapTypeModifiersLoc.push_back(Tok.getLocation());
ConsumeToken();
if (parseMapperModifier(Data))
return true;
} else {
// For the case of unknown map-type-modifier or a map-type.
// Map-type is followed by a colon; the function returns when it
// encounters a token followed by a colon.
if (Tok.is(tok::comma)) {
Diag(Tok, diag::err_omp_map_type_modifier_missing);
ConsumeToken();
continue;
}
// Potential map-type token as it is followed by a colon.
if (PP.LookAhead(0).is(tok::colon))
return false;
Diag(Tok, diag::err_omp_unknown_map_type_modifier)
<< (getLangOpts().OpenMP >= 51 ? 1 : 0)
<< getLangOpts().OpenMPExtensions;
ConsumeToken();
}
if (getCurToken().is(tok::comma))
ConsumeToken();
}
return false;
}
/// Checks if the token is a valid map-type.
/// FIXME: It will return an OpenMPMapModifierKind if that's what it parses.
static OpenMPMapClauseKind isMapType(Parser &P) {
Token Tok = P.getCurToken();
// The map-type token can be either an identifier or the C++ delete keyword.
if (!Tok.isOneOf(tok::identifier, tok::kw_delete))
return OMPC_MAP_unknown;
Preprocessor &PP = P.getPreprocessor();
OpenMPMapClauseKind MapType =
static_cast<OpenMPMapClauseKind>(getOpenMPSimpleClauseType(
OMPC_map, PP.getSpelling(Tok), P.getLangOpts()));
return MapType;
}
/// Parse map-type in map clause.
/// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list)
/// where, map-type ::= to | from | tofrom | alloc | release | delete
static void parseMapType(Parser &P, Parser::OpenMPVarListDataTy &Data) {
Token Tok = P.getCurToken();
if (Tok.is(tok::colon)) {
P.Diag(Tok, diag::err_omp_map_type_missing);
return;
}
Data.ExtraModifier = isMapType(P);
if (Data.ExtraModifier == OMPC_MAP_unknown)
P.Diag(Tok, diag::err_omp_unknown_map_type);
P.ConsumeToken();
}
/// Parses simple expression in parens for single-expression clauses of OpenMP
/// constructs.
ExprResult Parser::ParseOpenMPIteratorsExpr() {
assert(Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator" &&
"Expected 'iterator' token.");
SourceLocation IteratorKwLoc = ConsumeToken();
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after, "iterator"))
return ExprError();
SourceLocation LLoc = T.getOpenLocation();
SmallVector<Sema::OMPIteratorData, 4> Data;
while (Tok.isNot(tok::r_paren) && Tok.isNot(tok::annot_pragma_openmp_end)) {
// Check if the type parsing is required.
ParsedType IteratorType;
if (Tok.isNot(tok::identifier) || NextToken().isNot(tok::equal)) {
// identifier '=' is not found - parse type.
TypeResult TR = ParseTypeName();
if (TR.isInvalid()) {
T.skipToEnd();
return ExprError();
}
IteratorType = TR.get();
}
// Parse identifier.
IdentifierInfo *II = nullptr;
SourceLocation IdLoc;
if (Tok.is(tok::identifier)) {
II = Tok.getIdentifierInfo();
IdLoc = ConsumeToken();
} else {
Diag(Tok, diag::err_expected_unqualified_id) << 0;
}
// Parse '='.
SourceLocation AssignLoc;
if (Tok.is(tok::equal))
AssignLoc = ConsumeToken();
else
Diag(Tok, diag::err_omp_expected_equal_in_iterator);
// Parse range-specification - <begin> ':' <end> [ ':' <step> ]
ColonProtectionRAIIObject ColonRAII(*this);
// Parse <begin>
SourceLocation Loc = Tok.getLocation();
ExprResult LHS = ParseCastExpression(AnyCastExpr);
ExprResult Begin = Actions.CorrectDelayedTyposInExpr(
ParseRHSOfBinaryExpression(LHS, prec::Conditional));
Begin = Actions.ActOnFinishFullExpr(Begin.get(), Loc,
/*DiscardedValue=*/false);
// Parse ':'.
SourceLocation ColonLoc;
if (Tok.is(tok::colon))
ColonLoc = ConsumeToken();
// Parse <end>
Loc = Tok.getLocation();
LHS = ParseCastExpression(AnyCastExpr);
ExprResult End = Actions.CorrectDelayedTyposInExpr(
ParseRHSOfBinaryExpression(LHS, prec::Conditional));
End = Actions.ActOnFinishFullExpr(End.get(), Loc,
/*DiscardedValue=*/false);
SourceLocation SecColonLoc;
ExprResult Step;
// Parse optional step.
if (Tok.is(tok::colon)) {
// Parse ':'
SecColonLoc = ConsumeToken();
// Parse <step>
Loc = Tok.getLocation();
LHS = ParseCastExpression(AnyCastExpr);
Step = Actions.CorrectDelayedTyposInExpr(
ParseRHSOfBinaryExpression(LHS, prec::Conditional));
Step = Actions.ActOnFinishFullExpr(Step.get(), Loc,
/*DiscardedValue=*/false);
}
// Parse ',' or ')'
if (Tok.isNot(tok::comma) && Tok.isNot(tok::r_paren))
Diag(Tok, diag::err_omp_expected_punc_after_iterator);
if (Tok.is(tok::comma))
ConsumeToken();
Sema::OMPIteratorData &D = Data.emplace_back();
D.DeclIdent = II;
D.DeclIdentLoc = IdLoc;
D.Type = IteratorType;
D.AssignLoc = AssignLoc;
D.ColonLoc = ColonLoc;
D.SecColonLoc = SecColonLoc;
D.Range.Begin = Begin.get();
D.Range.End = End.get();
D.Range.Step = Step.get();
}
// Parse ')'.
SourceLocation RLoc = Tok.getLocation();
if (!T.consumeClose())
RLoc = T.getCloseLocation();
return Actions.ActOnOMPIteratorExpr(getCurScope(), IteratorKwLoc, LLoc, RLoc,
Data);
}
/// Parses clauses with list.
bool Parser::ParseOpenMPVarList(OpenMPDirectiveKind DKind,
OpenMPClauseKind Kind,
SmallVectorImpl<Expr *> &Vars,
OpenMPVarListDataTy &Data) {
UnqualifiedId UnqualifiedReductionId;
bool InvalidReductionId = false;
bool IsInvalidMapperModifier = false;
// Parse '('.
BalancedDelimiterTracker T(*this, tok::l_paren, tok::annot_pragma_openmp_end);
if (T.expectAndConsume(diag::err_expected_lparen_after,
getOpenMPClauseName(Kind).data()))
return true;
bool HasIterator = false;
bool NeedRParenForLinear = false;
BalancedDelimiterTracker LinearT(*this, tok::l_paren,
tok::annot_pragma_openmp_end);
// Handle reduction-identifier for reduction clause.
if (Kind == OMPC_reduction || Kind == OMPC_task_reduction ||
Kind == OMPC_in_reduction) {
Data.ExtraModifier = OMPC_REDUCTION_unknown;
if (Kind == OMPC_reduction && getLangOpts().OpenMP >= 50 &&
(Tok.is(tok::identifier) || Tok.is(tok::kw_default)) &&
NextToken().is(tok::comma)) {
// Parse optional reduction modifier.
Data.ExtraModifier =
getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), getLangOpts());
Data.ExtraModifierLoc = Tok.getLocation();
ConsumeToken();
assert(Tok.is(tok::comma) && "Expected comma.");
(void)ConsumeToken();
}
ColonProtectionRAIIObject ColonRAII(*this);
if (getLangOpts().CPlusPlus)
ParseOptionalCXXScopeSpecifier(Data.ReductionOrMapperIdScopeSpec,
/*ObjectType=*/nullptr,
/*ObjectHadErrors=*/false,
/*EnteringContext=*/false);
InvalidReductionId = ParseReductionId(
*this, Data.ReductionOrMapperIdScopeSpec, UnqualifiedReductionId);
if (InvalidReductionId) {
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
if (Tok.is(tok::colon))
Data.ColonLoc = ConsumeToken();
else
Diag(Tok, diag::warn_pragma_expected_colon) << "reduction identifier";
if (!InvalidReductionId)
Data.ReductionOrMapperId =
Actions.GetNameFromUnqualifiedId(UnqualifiedReductionId);
} else if (Kind == OMPC_depend) {
if (getLangOpts().OpenMP >= 50) {
if (Tok.is(tok::identifier) && PP.getSpelling(Tok) == "iterator") {
// Handle optional dependence modifier.
// iterator(iterators-definition)
// where iterators-definition is iterator-specifier [,
// iterators-definition ]
// where iterator-specifier is [ iterator-type ] identifier =
// range-specification
HasIterator = true;
EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope);
ExprResult IteratorRes = ParseOpenMPIteratorsExpr();
Data.DepModOrTailExpr = IteratorRes.get();
// Parse ','
ExpectAndConsume(tok::comma);
}
}
// Handle dependency type for depend clause.
ColonProtectionRAIIObject ColonRAII(*this);
Data.ExtraModifier = getOpenMPSimpleClauseType(
Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : "",
getLangOpts());
Data.ExtraModifierLoc = Tok.getLocation();
if (Data.ExtraModifier == OMPC_DEPEND_unknown) {
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
} else {
ConsumeToken();
// Special processing for depend(source) clause.
if (DKind == OMPD_ordered && Data.ExtraModifier == OMPC_DEPEND_source) {
// Parse ')'.
T.consumeClose();
return false;
}
}
if (Tok.is(tok::colon)) {
Data.ColonLoc = ConsumeToken();
} else {
Diag(Tok, DKind == OMPD_ordered ? diag::warn_pragma_expected_colon_r_paren
: diag::warn_pragma_expected_colon)
<< "dependency type";
}
} else if (Kind == OMPC_linear) {
// Try to parse modifier if any.
Data.ExtraModifier = OMPC_LINEAR_val;
if (Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::l_paren)) {
Data.ExtraModifier =
getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), getLangOpts());
Data.ExtraModifierLoc = ConsumeToken();
LinearT.consumeOpen();
NeedRParenForLinear = true;
}
} else if (Kind == OMPC_lastprivate) {
// Try to parse modifier if any.
Data.ExtraModifier = OMPC_LASTPRIVATE_unknown;
// Conditional modifier allowed only in OpenMP 5.0 and not supported in
// distribute and taskloop based directives.
if ((getLangOpts().OpenMP >= 50 && !isOpenMPDistributeDirective(DKind) &&
!isOpenMPTaskLoopDirective(DKind)) &&
Tok.is(tok::identifier) && PP.LookAhead(0).is(tok::colon)) {
Data.ExtraModifier =
getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), getLangOpts());
Data.ExtraModifierLoc = Tok.getLocation();
ConsumeToken();
assert(Tok.is(tok::colon) && "Expected colon.");
Data.ColonLoc = ConsumeToken();
}
} else if (Kind == OMPC_map) {
// Handle map type for map clause.
ColonProtectionRAIIObject ColonRAII(*this);
// The first identifier may be a list item, a map-type or a
// map-type-modifier. The map-type can also be delete which has the same
// spelling of the C++ delete keyword.
Data.ExtraModifier = OMPC_MAP_unknown;
Data.ExtraModifierLoc = Tok.getLocation();
// Check for presence of a colon in the map clause.
TentativeParsingAction TPA(*this);
bool ColonPresent = false;
if (SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch)) {
if (Tok.is(tok::colon))
ColonPresent = true;
}
TPA.Revert();
// Only parse map-type-modifier[s] and map-type if a colon is present in
// the map clause.
if (ColonPresent) {
IsInvalidMapperModifier = parseMapTypeModifiers(Data);
if (!IsInvalidMapperModifier)
parseMapType(*this, Data);
else
SkipUntil(tok::colon, tok::annot_pragma_openmp_end, StopBeforeMatch);
}
if (Data.ExtraModifier == OMPC_MAP_unknown) {
Data.ExtraModifier = OMPC_MAP_tofrom;
Data.IsMapTypeImplicit = true;
}
if (Tok.is(tok::colon))
Data.ColonLoc = ConsumeToken();
} else if (Kind == OMPC_to || Kind == OMPC_from) {
while (Tok.is(tok::identifier)) {
auto Modifier = static_cast<OpenMPMotionModifierKind>(
getOpenMPSimpleClauseType(Kind, PP.getSpelling(Tok), getLangOpts()));
if (Modifier == OMPC_MOTION_MODIFIER_unknown)
break;
Data.MotionModifiers.push_back(Modifier);
Data.MotionModifiersLoc.push_back(Tok.getLocation());
ConsumeToken();
if (Modifier == OMPC_MOTION_MODIFIER_mapper) {
IsInvalidMapperModifier = parseMapperModifier(Data);
if (IsInvalidMapperModifier)
break;
}
// OpenMP < 5.1 doesn't permit a ',' or additional modifiers.
if (getLangOpts().OpenMP < 51)
break;
// OpenMP 5.1 accepts an optional ',' even if the next character is ':'.
// TODO: Is that intentional?
if (Tok.is(tok::comma))
ConsumeToken();
}
if (!Data.MotionModifiers.empty() && Tok.isNot(tok::colon)) {
if (!IsInvalidMapperModifier) {
if (getLangOpts().OpenMP < 51)
Diag(Tok, diag::warn_pragma_expected_colon) << ")";
else
Diag(Tok, diag::warn_pragma_expected_colon) << "motion modifier";
}
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
// OpenMP 5.1 permits a ':' even without a preceding modifier. TODO: Is
// that intentional?
if ((!Data.MotionModifiers.empty() || getLangOpts().OpenMP >= 51) &&
Tok.is(tok::colon))
Data.ColonLoc = ConsumeToken();
} else if (Kind == OMPC_allocate ||
(Kind == OMPC_affinity && Tok.is(tok::identifier) &&
PP.getSpelling(Tok) == "iterator")) {
// Handle optional allocator expression followed by colon delimiter.
ColonProtectionRAIIObject ColonRAII(*this);
TentativeParsingAction TPA(*this);
// OpenMP 5.0, 2.10.1, task Construct.
// where aff-modifier is one of the following:
// iterator(iterators-definition)
ExprResult Tail;
if (Kind == OMPC_allocate) {
Tail = ParseAssignmentExpression();
} else {
HasIterator = true;
EnterScope(Scope::OpenMPDirectiveScope | Scope::DeclScope);
Tail = ParseOpenMPIteratorsExpr();
}
Tail = Actions.CorrectDelayedTyposInExpr(Tail);
Tail = Actions.ActOnFinishFullExpr(Tail.get(), T.getOpenLocation(),
/*DiscardedValue=*/false);
if (Tail.isUsable()) {
if (Tok.is(tok::colon)) {
Data.DepModOrTailExpr = Tail.get();
Data.ColonLoc = ConsumeToken();
TPA.Commit();
} else {
// Colon not found, parse only list of variables.
TPA.Revert();
}
} else {
// Parsing was unsuccessfull, revert and skip to the end of clause or
// directive.
TPA.Revert();
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
} else if (Kind == OMPC_adjust_args) {
// Handle adjust-op for adjust_args clause.
ColonProtectionRAIIObject ColonRAII(*this);
Data.ExtraModifier = getOpenMPSimpleClauseType(
Kind, Tok.is(tok::identifier) ? PP.getSpelling(Tok) : "",
getLangOpts());
Data.ExtraModifierLoc = Tok.getLocation();
if (Data.ExtraModifier == OMPC_ADJUST_ARGS_unknown) {
SkipUntil(tok::colon, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
} else {
ConsumeToken();
if (Tok.is(tok::colon))
Data.ColonLoc = Tok.getLocation();
ExpectAndConsume(tok::colon, diag::warn_pragma_expected_colon,
"adjust-op");
}
}
bool IsComma =
(Kind != OMPC_reduction && Kind != OMPC_task_reduction &&
Kind != OMPC_in_reduction && Kind != OMPC_depend && Kind != OMPC_map) ||
(Kind == OMPC_reduction && !InvalidReductionId) ||
(Kind == OMPC_map && Data.ExtraModifier != OMPC_MAP_unknown) ||
(Kind == OMPC_depend && Data.ExtraModifier != OMPC_DEPEND_unknown) ||
(Kind == OMPC_adjust_args &&
Data.ExtraModifier != OMPC_ADJUST_ARGS_unknown);
const bool MayHaveTail = (Kind == OMPC_linear || Kind == OMPC_aligned);
while (IsComma || (Tok.isNot(tok::r_paren) && Tok.isNot(tok::colon) &&
Tok.isNot(tok::annot_pragma_openmp_end))) {
ParseScope OMPListScope(this, Scope::OpenMPDirectiveScope);
ColonProtectionRAIIObject ColonRAII(*this, MayHaveTail);
// Parse variable
ExprResult VarExpr =
Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
if (VarExpr.isUsable()) {
Vars.push_back(VarExpr.get());
} else {
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
// Skip ',' if any
IsComma = Tok.is(tok::comma);
if (IsComma)
ConsumeToken();
else if (Tok.isNot(tok::r_paren) &&
Tok.isNot(tok::annot_pragma_openmp_end) &&
(!MayHaveTail || Tok.isNot(tok::colon)))
Diag(Tok, diag::err_omp_expected_punc)
<< ((Kind == OMPC_flush) ? getOpenMPDirectiveName(OMPD_flush)
: getOpenMPClauseName(Kind))
<< (Kind == OMPC_flush);
}
// Parse ')' for linear clause with modifier.
if (NeedRParenForLinear)
LinearT.consumeClose();
// Parse ':' linear-step (or ':' alignment).
const bool MustHaveTail = MayHaveTail && Tok.is(tok::colon);
if (MustHaveTail) {
Data.ColonLoc = Tok.getLocation();
SourceLocation ELoc = ConsumeToken();
ExprResult Tail = ParseAssignmentExpression();
Tail =
Actions.ActOnFinishFullExpr(Tail.get(), ELoc, /*DiscardedValue*/ false);
if (Tail.isUsable())
Data.DepModOrTailExpr = Tail.get();
else
SkipUntil(tok::comma, tok::r_paren, tok::annot_pragma_openmp_end,
StopBeforeMatch);
}
// Parse ')'.
Data.RLoc = Tok.getLocation();
if (!T.consumeClose())
Data.RLoc = T.getCloseLocation();
// Exit from scope when the iterator is used in depend clause.
if (HasIterator)
ExitScope();
return (Kind != OMPC_depend && Kind != OMPC_map && Vars.empty()) ||
(MustHaveTail && !Data.DepModOrTailExpr) || InvalidReductionId ||
IsInvalidMapperModifier;
}
/// Parsing of OpenMP clause 'private', 'firstprivate', 'lastprivate',
/// 'shared', 'copyin', 'copyprivate', 'flush', 'reduction', 'task_reduction',
/// 'in_reduction', 'nontemporal', 'exclusive' or 'inclusive'.
///
/// private-clause:
/// 'private' '(' list ')'
/// firstprivate-clause:
/// 'firstprivate' '(' list ')'
/// lastprivate-clause:
/// 'lastprivate' '(' list ')'
/// shared-clause:
/// 'shared' '(' list ')'
/// linear-clause:
/// 'linear' '(' linear-list [ ':' linear-step ] ')'
/// aligned-clause:
/// 'aligned' '(' list [ ':' alignment ] ')'
/// reduction-clause:
/// 'reduction' '(' [ modifier ',' ] reduction-identifier ':' list ')'
/// task_reduction-clause:
/// 'task_reduction' '(' reduction-identifier ':' list ')'
/// in_reduction-clause:
/// 'in_reduction' '(' reduction-identifier ':' list ')'
/// copyprivate-clause:
/// 'copyprivate' '(' list ')'
/// flush-clause:
/// 'flush' '(' list ')'
/// depend-clause:
/// 'depend' '(' in | out | inout : list | source ')'
/// map-clause:
/// 'map' '(' [ [ always [,] ] [ close [,] ]
/// [ mapper '(' mapper-identifier ')' [,] ]
/// to | from | tofrom | alloc | release | delete ':' ] list ')';
/// to-clause:
/// 'to' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')'
/// from-clause:
/// 'from' '(' [ mapper '(' mapper-identifier ')' ':' ] list ')'
/// use_device_ptr-clause:
/// 'use_device_ptr' '(' list ')'
/// use_device_addr-clause:
/// 'use_device_addr' '(' list ')'
/// is_device_ptr-clause:
/// 'is_device_ptr' '(' list ')'
/// allocate-clause:
/// 'allocate' '(' [ allocator ':' ] list ')'
/// nontemporal-clause:
/// 'nontemporal' '(' list ')'
/// inclusive-clause:
/// 'inclusive' '(' list ')'
/// exclusive-clause:
/// 'exclusive' '(' list ')'
///
/// For 'linear' clause linear-list may have the following forms:
/// list
/// modifier(list)
/// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++).
OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind,
OpenMPClauseKind Kind,
bool ParseOnly) {
SourceLocation Loc = Tok.getLocation();
SourceLocation LOpen = ConsumeToken();
SmallVector<Expr *, 4> Vars;
OpenMPVarListDataTy Data;
if (ParseOpenMPVarList(DKind, Kind, Vars, Data))
return nullptr;
if (ParseOnly)
return nullptr;
OMPVarListLocTy Locs(Loc, LOpen, Data.RLoc);
return Actions.ActOnOpenMPVarListClause(
Kind, Vars, Data.DepModOrTailExpr, Locs, Data.ColonLoc,
Data.ReductionOrMapperIdScopeSpec, Data.ReductionOrMapperId,
Data.ExtraModifier, Data.MapTypeModifiers, Data.MapTypeModifiersLoc,
Data.IsMapTypeImplicit, Data.ExtraModifierLoc, Data.MotionModifiers,
Data.MotionModifiersLoc);
}