================
@@ -4678,6 +4678,95 @@ class BlockDecl : public Decl, public DeclContext {
}
};
+/// Represents a partial function definition.
+///
+/// An outlined function declaration contains the parameters and body of
+/// a function independent of other function definition concerns such
+/// as function name, type, and calling convention. Such declarations may
+/// be used to hold a parameterized and transformed sequence of statements
+/// used to generate a target dependent function definition without losing
+/// association with the original statements. See SYCLKernelCallStmt as an
+/// example.
+class OutlinedFunctionDecl final
+ : public Decl,
+ public DeclContext,
+ private llvm::TrailingObjects<OutlinedFunctionDecl, ImplicitParamDecl *>
{
+protected:
+ size_t numTrailingObjects(OverloadToken<ImplicitParamDecl>) {
+ return NumParams;
+ }
+
+private:
+ /// The number of parameters to the outlined function.
+ unsigned NumParams;
+
+ /// The body of the outlined function.
+ llvm::PointerIntPair<Stmt *, 1, bool> BodyAndNothrow;
+
+ explicit OutlinedFunctionDecl(DeclContext *DC, unsigned NumParams);
+
+ ImplicitParamDecl *const *getParams() const {
+ return getTrailingObjects<ImplicitParamDecl *>();
+ }
+
+ ImplicitParamDecl **getParams() {
+ return getTrailingObjects<ImplicitParamDecl *>();
+ }
+
+public:
+ friend class ASTDeclReader;
+ friend class ASTDeclWriter;
+ friend TrailingObjects;
+
+ static OutlinedFunctionDecl *Create(ASTContext &C, DeclContext *DC,
+ unsigned NumParams);
+ static OutlinedFunctionDecl *
+ CreateDeserialized(ASTContext &C, GlobalDeclID ID, unsigned NumParams);
+
+ Stmt *getBody() const override;
+ void setBody(Stmt *B);
+
+ bool isNothrow() const;
+ void setNothrow(bool Nothrow = true);
+
+ unsigned getNumParams() const { return NumParams; }
+
+ ImplicitParamDecl *getParam(unsigned i) const {
+ assert(i < NumParams);
+ return getParams()[i];
+ }
+ void setParam(unsigned i, ImplicitParamDecl *P) {
----------------
tahonermann wrote:
Yes. the `ImplicitParamDecl` constructor requires a `DeclContext` that is
provided by `OutlinedFunctionDecl`. It is therefore necessary to create the
`OutlinedFunctionDecl` object first, and then create the `ImplicitParamDecl`
objects to attach to it. See `SemaSYCL::BuildSYCLKernelCallStmt()`.
https://github.com/llvm/llvm-project/pull/122379
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