[flang][openacc] OpenACC 3.0 parser

Summary:
This patch introduce the parser for OpenACC 3.0 in Flang. It uses the same TableGen mechanism
than OpenMP.

Reviewers: nvdatian, sscalpone, tskeith, klausler, ichoyjx, jdoerfert, DavidTruby

Reviewed By: klausler

Subscribers: MaskRay, SouraVX, mgorny, hiraditya, jfb, sstefan1, llvm-commits

Tags: #llvm, #flang

Differential Revision: https://reviews.llvm.org/D83649

flang/include/flang/Common/Fortran-features.h

@@ -24,7 +24,7 @@ ENUM_CLASS(LanguageFeature, BackslashEscapes, OldDebugLines,
     OldStyleParameter, ComplexConstructor, PercentLOC, SignedPrimary, FileName,
     Convert, Dispose, IOListLeadingComma, AbbreviatedEditDescriptor,
     ProgramParentheses, PercentRefAndVal, OmitFunctionDummies, CrayPointer,
-    Hollerith, ArithmeticIF, Assign, AssignedGOTO, Pause, OpenMP,
+    Hollerith, ArithmeticIF, Assign, AssignedGOTO, Pause, OpenACC, OpenMP,
     CruftAfterAmpersand, ClassicCComments, AdditionalFormats, BigIntLiterals,
     RealDoControls, EquivalenceNumericWithCharacter, AdditionalIntrinsics,
     AnonymousParents, OldLabelDoEndStatements, LogicalIntegerAssignment,
@@ -37,6 +37,7 @@ class LanguageFeatureControl {
   LanguageFeatureControl() {
     // These features must be explicitly enabled by command line options.
     disable_.set(LanguageFeature::OldDebugLines);
+    disable_.set(LanguageFeature::OpenACC);
     disable_.set(LanguageFeature::OpenMP);
     // These features, if enabled, conflict with valid standard usage,
     // so there are disabled here by default.
@@ -50,7 +51,9 @@ class LanguageFeatureControl {
   void WarnOnAllNonstandard(bool yes = true) { warnAll_ = yes; }
   bool IsEnabled(LanguageFeature f) const { return !disable_.test(f); }
   bool ShouldWarn(LanguageFeature f) const {
-    return (warnAll_ && f != LanguageFeature::OpenMP) || warn_.test(f);
+    return (warnAll_ && f != LanguageFeature::OpenMP &&
+               f != LanguageFeature::OpenACC) ||
+        warn_.test(f);
   }
   // Return all spellings of operators names, depending on features enabled
   std::vector<const char *> GetNames(LogicalOperator) const;

flang/include/flang/Parser/dump-parse-tree.h

@@ -53,6 +53,88 @@ class ParseTreeDumper {
   NODE(format, IntrinsicTypeDataEditDesc)
   NODE(format::IntrinsicTypeDataEditDesc, Kind)
   NODE(parser, Abstract)
+  NODE(parser, AccAtomicCapture)
+  NODE(AccAtomicCapture, Stmt1)
+  NODE(AccAtomicCapture, Stmt2)
+  NODE(parser, AccAtomicRead)
+  NODE(parser, AccAtomicUpdate)
+  NODE(parser, AccAtomicWrite)
+  NODE(parser, AccBeginBlockDirective)
+  NODE(parser, AccBeginCombinedDirective)
+  NODE(parser, AccBeginLoopDirective)
+  NODE(parser, AccBlockDirective)
+  NODE(parser, AccClause)
+  NODE(AccClause, Auto)
+  NODE(AccClause, Async)
+  NODE(AccClause, Attach)
+  NODE(AccClause, Bind)
+  NODE(AccClause, Capture)
+  NODE(AccClause, Collapse)
+  NODE(AccClause, Copy)
+  NODE(AccClause, Copyin)
+  NODE(AccClause, Copyout)
+  NODE(AccClause, Create)
+  NODE(AccClause, Default)
+  NODE(AccClause, DefaultAsync)
+  NODE(AccClause, Delete)
+  NODE(AccClause, Detach)
+  NODE(AccClause, Device)
+  NODE(AccClause, DeviceNum)
+  NODE(AccClause, DevicePtr)
+  NODE(AccClause, DeviceResident)
+  NODE(AccClause, DeviceType)
+  NODE(AccClause, Finalize)
+  NODE(AccClause, FirstPrivate)
+  NODE(AccClause, Gang)
+  NODE(AccClause, Host)
+  NODE(AccClause, If)
+  NODE(AccClause, IfPresent)
+  NODE(AccClause, Independent)
+  NODE(AccClause, Link)
+  NODE(AccClause, NoCreate)
+  NODE(AccClause, NoHost)
+  NODE(AccClause, NumGangs)
+  NODE(AccClause, NumWorkers)
+  NODE(AccClause, Present)
+  NODE(AccClause, Private)
+  NODE(AccClause, Tile)
+  NODE(AccClause, UseDevice)
+  NODE(AccClause, Read)
+  NODE(AccClause, Reduction)
+  NODE(AccClause, Self)
+  NODE(AccClause, Seq)
+  NODE(AccClause, Vector)
+  NODE(AccClause, VectorLength)
+  NODE(AccClause, Wait)
+  NODE(AccClause, Worker)
+  NODE(AccClause, Write)
+  NODE(AccClause, Unknown)
+  NODE(parser, AccDefaultClause)
+  NODE_ENUM(parser::AccDefaultClause, Arg)
+  NODE(parser, AccClauseList)
+  NODE(parser, AccCombinedDirective)
+  NODE(parser, AccDataModifier)
+  NODE_ENUM(parser::AccDataModifier, Modifier)
+  NODE(parser, AccDeclarativeDirective)
+  NODE(parser, AccEndAtomic)
+  NODE(parser, AccEndBlockDirective)
+  NODE(parser, AccEndCombinedDirective)
+  NODE(parser, AccGangArgument)
+  NODE(parser, AccObject)
+  NODE(parser, AccObjectList)
+  NODE(parser, AccObjectListWithModifier)
+  NODE(parser, AccObjectListWithReduction)
+  NODE(parser, AccReductionOperator)
+  NODE(parser, AccSizeExpr)
+  NODE(parser, AccSizeExprList)
+  NODE(parser, AccStandaloneDirective)
+  NODE(parser, AccLoopDirective)
+  NODE(parser, AccWaitArgument)
+  static std::string GetNodeName(const llvm::acc::Directive &x) {
+    return llvm::Twine(
+        "llvm::acc::Directive = ", llvm::acc::getOpenACCDirectiveName(x))
+        .str();
+  }
   NODE(parser, AcImpliedDo)
   NODE(parser, AcImpliedDoControl)
   NODE(parser, AcValue)
@@ -510,6 +592,17 @@ class ParseTreeDumper {
   NODE(parser, OmpSectionsDirective)
   NODE(parser, OmpSimpleStandaloneDirective)
   NODE(parser, Only)
+  NODE(parser, OpenACCAtomicConstruct)
+  NODE(parser, OpenACCBlockConstruct)
+  NODE(parser, OpenACCCacheConstruct)
+  NODE(parser, OpenACCCombinedConstruct)
+  NODE(parser, OpenACCConstruct)
+  NODE(parser, OpenACCDeclarativeConstruct)
+  NODE(parser, OpenACCLoopConstruct)
+  NODE(parser, OpenACCRoutineConstruct)
+  NODE(parser, OpenACCStandaloneDeclarativeConstruct)
+  NODE(parser, OpenACCStandaloneConstruct)
+  NODE(parser, OpenACCWaitConstruct)
   NODE(parser, OpenMPAtomicConstruct)
   NODE(parser, OpenMPBlockConstruct)
   NODE(parser, OpenMPCancelConstruct)