[OpenMP 5.0] Parsing/sema support for from clause with mapper modifier.
This patch implements the parsing and sema support for the OpenMP
'from'-clause with potential user-defined mappers attached.
User-defined mappers are a new feature in OpenMP 5.0. A 'from'-clause
can have an explicit or implicit associated mapper, which instructs the
compiler to generate and use customized mapping functions. An example is
shown below:
struct S { int len; int *d; };
#pragma omp declare mapper(id: struct S s) map(s, s.d[0:s.len])
struct S ss;
#pragma omp target update from(mapper(id): ss) // use the mapper with name 'id' to map ss from device
Contributed-by: Lingda Li <lildmh@gmail.com>
Differential Revision: https://reviews.llvm.org/D58638
llvm-svn: 354817
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index bed58d0..9626418 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -12448,6 +12448,10 @@
void OMPClauseReader::VisitOMPFromClause(OMPFromClause *C) {
C->setLParenLoc(Record.readSourceLocation());
+ C->setMapperQualifierLoc(Record.readNestedNameSpecifierLoc());
+ DeclarationNameInfo DNI;
+ Record.readDeclarationNameInfo(DNI);
+ C->setMapperIdInfo(DNI);
auto NumVars = C->varlist_size();
auto UniqueDecls = C->getUniqueDeclarationsNum();
auto TotalLists = C->getTotalComponentListNum();
@@ -12459,6 +12463,12 @@
Vars.push_back(Record.readSubExpr());
C->setVarRefs(Vars);
+ SmallVector<Expr *, 16> UDMappers;
+ UDMappers.reserve(NumVars);
+ for (unsigned I = 0; I < NumVars; ++I)
+ UDMappers.push_back(Record.readSubExpr());
+ C->setUDMapperRefs(UDMappers);
+
SmallVector<ValueDecl *, 16> Decls;
Decls.reserve(UniqueDecls);
for (unsigned i = 0; i < UniqueDecls; ++i)