jdenny created this revision.
jdenny added a reviewer: ABataev.
First, this patch fixes an assert failure when, for example, "omp for"
has num_teams.
Second, this patch prevents duplicate diagnostics when, for example,
"omp for" has uniform.
This patch makes the general assumption (even where it doesn't
necessarily fix an existing bug) that it is worthless to perform sema
for a clause that appears on a directive on which OpenMP does not
permit that clause. However, due to this assumption, this patch
suppresses some diagnostics that were expected in the test suite. I
assert that those diagnostics were likely just distracting to the
user.
https://reviews.llvm.org/D41841
Files:
include/clang/Parse/Parser.h
lib/Parse/ParseOpenMP.cpp
test/OpenMP/distribute_simd_loop_messages.cpp
test/OpenMP/for_misc_messages.c
test/OpenMP/parallel_messages.cpp
test/OpenMP/simd_loop_messages.cpp
test/OpenMP/target_teams_distribute_simd_messages.cpp
test/OpenMP/taskloop_loop_messages.cpp
Index: test/OpenMP/taskloop_loop_messages.cpp
===================================================================
--- test/OpenMP/taskloop_loop_messages.cpp
+++ test/OpenMP/taskloop_loop_messages.cpp
@@ -294,10 +294,8 @@
c[ii] = a[ii];
#pragma omp parallel
-// expected-error@+2 {{unexpected OpenMP clause 'linear' in directive '#pragma omp taskloop'}}
-// expected-note@+1 {{defined as linear}}
+// expected-error@+1 {{unexpected OpenMP clause 'linear' in directive '#pragma omp taskloop'}}
#pragma omp taskloop linear(ii)
-// expected-error@+1 {{loop iteration variable in the associated loop of 'omp taskloop' directive may not be linear, predetermined as private}}
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
Index: test/OpenMP/target_teams_distribute_simd_messages.cpp
===================================================================
--- test/OpenMP/target_teams_distribute_simd_messages.cpp
+++ test/OpenMP/target_teams_distribute_simd_messages.cpp
@@ -64,7 +64,7 @@
// expected-error@+1 {{unexpected OpenMP clause 'default' in directive '#pragma omp target teams distribute simd'}}
#pragma omp target teams distribute simd default(none)
for (int i = 0; i < 10; ++i)
- ++argc; // expected-error {{ariable 'argc' must have explicitly specified data sharing attributes}}
+ ++argc;
goto L2; // expected-error {{use of undeclared label 'L2'}}
#pragma omp target teams distribute simd
Index: test/OpenMP/simd_loop_messages.cpp
===================================================================
--- test/OpenMP/simd_loop_messages.cpp
+++ test/OpenMP/simd_loop_messages.cpp
@@ -236,9 +236,7 @@
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
- // expected-error@+3 {{unexpected OpenMP clause 'shared' in directive '#pragma omp simd'}}
- // expected-note@+2 {{defined as shared}}
- // expected-error@+2 {{loop iteration variable in the associated loop of 'omp simd' directive may not be shared, predetermined as linear}}
+ // expected-error@+1 {{unexpected OpenMP clause 'shared' in directive '#pragma omp simd'}}
#pragma omp simd shared(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
Index: test/OpenMP/parallel_messages.cpp
===================================================================
--- test/OpenMP/parallel_messages.cpp
+++ test/OpenMP/parallel_messages.cpp
@@ -31,6 +31,8 @@
foo();
L1:
foo();
+ #pragma omp parallel ordered // expected-error {{unexpected OpenMP clause 'ordered' in directive '#pragma omp parallel'}}
+ ;
#pragma omp parallel
;
#pragma omp parallel
Index: test/OpenMP/for_misc_messages.c
===================================================================
--- test/OpenMP/for_misc_messages.c
+++ test/OpenMP/for_misc_messages.c
@@ -54,6 +54,20 @@
#pragma omp for foo bar
for (i = 0; i < 16; ++i)
;
+// At one time, this failed an assert.
+// expected-error@+1 {{unexpected OpenMP clause 'num_teams' in directive '#pragma omp for'}}
+#pragma omp for num_teams(3)
+ for (i = 0; i < 16; ++i)
+ ;
+// At one time, this error was reported twice.
+// expected-error@+1 {{unexpected OpenMP clause 'uniform' in directive '#pragma omp for'}}
+#pragma omp for uniform
+ for (i = 0; i < 16; ++i)
+ ;
+// expected-error@+1 {{unexpected OpenMP clause 'if' in directive '#pragma omp for'}}
+#pragma omp for if(0)
+ for (i = 0; i < 16; ++i)
+ ;
}
void test_non_identifiers() {
Index: test/OpenMP/distribute_simd_loop_messages.cpp
===================================================================
--- test/OpenMP/distribute_simd_loop_messages.cpp
+++ test/OpenMP/distribute_simd_loop_messages.cpp
@@ -324,9 +324,7 @@
#pragma omp target
#pragma omp teams
- // expected-error@+3 {{unexpected OpenMP clause 'shared' in directive '#pragma omp distribute simd'}}
- // expected-note@+2 {{defined as shared}}
- // expected-error@+2 {{loop iteration variable in the associated loop of 'omp distribute simd' directive may not be shared, predetermined as linear}}
+ // expected-error@+1 {{unexpected OpenMP clause 'shared' in directive '#pragma omp distribute simd'}}
#pragma omp distribute simd shared(ii)
for (ii = 0; ii < 10; ii++)
c[ii] = a[ii];
Index: lib/Parse/ParseOpenMP.cpp
===================================================================
--- lib/Parse/ParseOpenMP.cpp
+++ lib/Parse/ParseOpenMP.cpp
@@ -1205,11 +1205,13 @@
OpenMPClauseKind CKind, bool FirstClause) {
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)) {
Diag(Tok, diag::err_omp_unexpected_clause) << getOpenMPClauseName(CKind)
<< getOpenMPDirectiveName(DKind);
ErrorFound = true;
+ WrongDirective = true;
}
switch (CKind) {
@@ -1253,9 +1255,9 @@
}
if (CKind == OMPC_ordered && PP.LookAhead(/*N=*/0).isNot(tok::l_paren))
- Clause = ParseOpenMPClause(CKind);
+ Clause = ParseOpenMPClause(CKind, WrongDirective);
else
- Clause = ParseOpenMPSingleExprClause(CKind);
+ Clause = ParseOpenMPSingleExprClause(CKind, WrongDirective);
break;
case OMPC_default:
case OMPC_proc_bind:
@@ -1270,7 +1272,7 @@
ErrorFound = true;
}
- Clause = ParseOpenMPSimpleClause(CKind);
+ Clause = ParseOpenMPSimpleClause(CKind, WrongDirective);
break;
case OMPC_schedule:
case OMPC_dist_schedule:
@@ -1287,7 +1289,7 @@
LLVM_FALLTHROUGH;
case OMPC_if:
- Clause = ParseOpenMPSingleExprWithArgClause(CKind);
+ Clause = ParseOpenMPSingleExprWithArgClause(CKind, WrongDirective);
break;
case OMPC_nowait:
case OMPC_untied:
@@ -1310,7 +1312,7 @@
ErrorFound = true;
}
- Clause = ParseOpenMPClause(CKind);
+ Clause = ParseOpenMPClause(CKind, WrongDirective);
break;
case OMPC_private:
case OMPC_firstprivate:
@@ -1330,17 +1332,18 @@
case OMPC_from:
case OMPC_use_device_ptr:
case OMPC_is_device_ptr:
- Clause = ParseOpenMPVarListClause(DKind, CKind);
+ Clause = ParseOpenMPVarListClause(DKind, CKind, WrongDirective);
break;
case OMPC_unknown:
Diag(Tok, diag::warn_omp_extra_tokens_at_eol)
<< getOpenMPDirectiveName(DKind);
SkipUntil(tok::annot_pragma_openmp_end, StopBeforeMatch);
break;
case OMPC_threadprivate:
case OMPC_uniform:
- Diag(Tok, diag::err_omp_unexpected_clause) << getOpenMPClauseName(CKind)
- << getOpenMPDirectiveName(DKind);
+ if (!WrongDirective)
+ Diag(Tok, diag::err_omp_unexpected_clause)
+ << getOpenMPClauseName(CKind) << getOpenMPDirectiveName(DKind);
SkipUntil(tok::comma, tok::annot_pragma_openmp_end, StopBeforeMatch);
break;
}
@@ -1400,7 +1403,8 @@
/// hint-clause:
/// 'hint' '(' expression ')'
///
-OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind) {
+OMPClause *Parser::ParseOpenMPSingleExprClause(OpenMPClauseKind Kind,
+ bool ParseOnly) {
SourceLocation Loc = ConsumeToken();
SourceLocation LLoc = Tok.getLocation();
SourceLocation RLoc;
@@ -1410,6 +1414,8 @@
if (Val.isInvalid())
return nullptr;
+ if (ParseOnly)
+ return nullptr;
return Actions.ActOnOpenMPSingleExprClause(Kind, Val.get(), Loc, LLoc, RLoc);
}
@@ -1421,7 +1427,8 @@
/// proc_bind-clause:
/// 'proc_bind' '(' 'master' | 'close' | 'spread' ')
///
-OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind) {
+OMPClause *Parser::ParseOpenMPSimpleClause(OpenMPClauseKind Kind,
+ bool ParseOnly) {
SourceLocation Loc = Tok.getLocation();
SourceLocation LOpen = ConsumeToken();
// Parse '('.
@@ -1440,6 +1447,8 @@
// Parse ')'.
T.consumeClose();
+ if (ParseOnly)
+ return nullptr;
return Actions.ActOnOpenMPSimpleClause(Kind, Type, TypeLoc, LOpen, Loc,
Tok.getLocation());
}
@@ -1470,10 +1479,12 @@
/// nogroup-clause:
/// 'nogroup'
///
-OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind) {
+OMPClause *Parser::ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly) {
SourceLocation Loc = Tok.getLocation();
ConsumeAnyToken();
+ if (ParseOnly)
+ return nullptr;
return Actions.ActOnOpenMPClause(Kind, Loc, Tok.getLocation());
}
@@ -1491,7 +1502,8 @@
/// defaultmap:
/// 'defaultmap' '(' modifier ':' kind ')'
///
-OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind) {
+OMPClause *Parser::ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind,
+ bool ParseOnly) {
SourceLocation Loc = ConsumeToken();
SourceLocation DelimLoc;
// Parse '('.
@@ -1613,6 +1625,8 @@
if (NeedAnExpression && Val.isInvalid())
return nullptr;
+ if (ParseOnly)
+ return nullptr;
return Actions.ActOnOpenMPSingleExprWithArgClause(
Kind, Arg, Val.get(), Loc, T.getOpenLocation(), KLoc, DelimLoc,
T.getCloseLocation());
@@ -1940,15 +1954,18 @@
/// modifier(list)
/// where modifier is 'val' (C) or 'ref', 'val' or 'uval'(C++).
OMPClause *Parser::ParseOpenMPVarListClause(OpenMPDirectiveKind DKind,
- OpenMPClauseKind Kind) {
+ 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;
return Actions.ActOnOpenMPVarListClause(
Kind, Vars, Data.TailExpr, Loc, LOpen, Data.ColonLoc, Tok.getLocation(),
Data.ReductionIdScopeSpec, Data.ReductionId, Data.DepKind, Data.LinKind,
Index: include/clang/Parse/Parser.h
===================================================================
--- include/clang/Parse/Parser.h
+++ include/clang/Parse/Parser.h
@@ -2675,30 +2675,42 @@
/// \brief Parses clause with a single expression of a kind \a Kind.
///
/// \param Kind Kind of current clause.
+ /// \param ParseOnly true to skip the clause's semantic actions and return
+ /// nullptr.
///
- OMPClause *ParseOpenMPSingleExprClause(OpenMPClauseKind Kind);
+ OMPClause *ParseOpenMPSingleExprClause(OpenMPClauseKind Kind,
+ bool ParseOnly);
/// \brief Parses simple clause of a kind \a Kind.
///
/// \param Kind Kind of current clause.
+ /// \param ParseOnly true to skip the clause's semantic actions and return
+ /// nullptr.
///
- OMPClause *ParseOpenMPSimpleClause(OpenMPClauseKind Kind);
+ OMPClause *ParseOpenMPSimpleClause(OpenMPClauseKind Kind, bool ParseOnly);
/// \brief Parses clause with a single expression and an additional argument
/// of a kind \a Kind.
///
/// \param Kind Kind of current clause.
+ /// \param ParseOnly true to skip the clause's semantic actions and return
+ /// nullptr.
///
- OMPClause *ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind);
+ OMPClause *ParseOpenMPSingleExprWithArgClause(OpenMPClauseKind Kind,
+ bool ParseOnly);
/// \brief Parses clause without any additional arguments.
///
/// \param Kind Kind of current clause.
+ /// \param ParseOnly true to skip the clause's semantic actions and return
+ /// nullptr.
///
- OMPClause *ParseOpenMPClause(OpenMPClauseKind Kind);
+ OMPClause *ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly = false);
/// \brief Parses clause with the list of variables of a kind \a Kind.
///
/// \param Kind Kind of current clause.
+ /// \param ParseOnly true to skip the clause's semantic actions and return
+ /// nullptr.
///
OMPClause *ParseOpenMPVarListClause(OpenMPDirectiveKind DKind,
- OpenMPClauseKind Kind);
+ OpenMPClauseKind Kind, bool ParseOnly);
public:
/// Parses simple expression in parens for single-expression clauses of OpenMP
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