================
@@ -0,0 +1,89 @@
+//===--- CIRGenOpenMPClause.h - OpenMP clause emitter -----------*- C++
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENOPENMPCLAUSE_H
+#define LLVM_CLANG_LIB_CIR_CODEGEN_CIRGENOPENMPCLAUSE_H
+
+#include "CIRGenBuilder.h"
+#include "CIRGenModule.h"
+#include "mlir/Dialect/OpenMP/OpenMPClauseOperands.h"
+#include "clang/AST/OpenMPClause.h"
+#include "clang/AST/StmtOpenMP.h"
+#include "llvm/Frontend/OpenMP/OMPConstants.h"
+
+#include <type_traits>
+
+namespace clang::CIRGen {
+
+class CIRGenFunction;
+
+/// A type-only list of OpenMP clause AST node types.
+/// Note: The clause AST classes do not have a default constructor, so a
+/// std::tuple is not practical.
+template <typename... Clauses> struct OpenMPClauseList {};
+
+/// Emits OpenMP clauses for a directive, writing results into the
+/// auto-generated ClauseOps from the OMP dialect.
+class OpenMPClauseEmitter {
+ CIRGenFunction &cgf;
+ CIRGenModule &cgm;
+ CIRGenBuilderTy &builder;
+ mlir::Location loc;
+ llvm::ArrayRef<const OMPClause *> clauses;
+
+public:
+ OpenMPClauseEmitter(CIRGenFunction &cgf, CIRGenModule &cgm,
+ CIRGenBuilderTy &builder, mlir::Location loc,
+ llvm::ArrayRef<const OMPClause *> clauses)
+ : cgf(cgf), cgm(cgm), builder(builder), loc(loc), clauses(clauses) {}
+
+ bool emitProcBind(mlir::omp::ProcBindClauseOps &result) const;
+
+ /// Emit map clauses. The optional \p mapSyms parameter collects the
+ /// VarDecls corresponding to each map operand.
+ bool emitMap(mlir::omp::MapClauseOps &result,
+ llvm::SmallVectorImpl<const VarDecl *> *mapSyms = nullptr)
const;
+
+ /// Verify the clauses of a directive to make sure all legal cases are either
+ /// implemented or give a NYI error. If the clause is neither, then
+ /// an unknown clause error will be emitted.
+ template <typename... SupportedClauses, typename... NYIClauses>
+ void emitNYI(OpenMPClauseList<NYIClauses...> nyi,
+ llvm::omp::Directive directive) const;
+
+private:
+ /// True if T is the same type as any of Ts.
+ template <typename T, typename... Ts>
+ static constexpr bool isAnyOf = (std::is_same_v<T, Ts> || ...);
+};
+
+template <typename... SupportedClauses, typename... NYIClauses>
+void OpenMPClauseEmitter::emitNYI(OpenMPClauseList<NYIClauses...>,
+ llvm::omp::Directive directive) const {
+ static_assert(
+ (!isAnyOf<NYIClauses, SupportedClauses...> && ...),
+ "the supported and not-yet-implemented clause lists must be disjoint");
+
+ for (const OMPClause *c : clauses) {
+ if ((isa<NYIClauses>(c) || ...)) {
+ std::string msg =
+ (llvm::Twine("OpenMP ") +
+ llvm::omp::getOpenMPDirectiveName(directive).upper() + " '" +
+ llvm::omp::getOpenMPClauseName(c->getClauseKind()) + "' clause")
+ .str();
+ cgm.errorNYI(c->getBeginLoc(), msg);
+ } else if (!(isa<SupportedClauses>(c) || ...)) {
----------------
skatrak wrote:
```suggestion
} else if (!isa<SupportedClauses...>(c)) {
```
https://github.com/llvm/llvm-project/pull/195452
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