[OpenMP] Parsing and sema support for target update directive

Summary:
This patch is to add parsing and sema support for `target update` directive. Support for the `to` and `from` clauses will be added by a different patch.  This patch also adds support for other clauses that are already implemented upstream and apply to `target update`, e.g. `device` and `if`.

This patch is based on the original post by Kelvin Li.

Reviewers: hfinkel, carlo.bertolli, kkwli0, arpith-jacob, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D15944

llvm-svn: 270878

1 files changed, 11 insertions, 1 deletions

diff --git a/clang/lib/Basic/OpenMPKinds.cpp b/clang/lib/Basic/OpenMPKinds.cpp
index 2a151358237..f066c6fe0c2 100644
--- a/clang/lib/Basic/OpenMPKinds.cpp
+++ b/clang/lib/Basic/OpenMPKinds.cpp
@@ -480,6 +480,16 @@ bool clang::isAllowedClauseForDirective(OpenMPDirectiveKind DKind,
       break;
     }
     break;
+  case OMPD_target_update:
+    switch (CKind) {
+#define OPENMP_TARGET_UPDATE_CLAUSE(Name)                                      \
+  case OMPC_##Name:                                                            \
+    return true;
+#include "clang/Basic/OpenMPKinds.def"
+    default:
+      break;
+    }
+    break;
   case OMPD_teams:
     switch (CKind) {
 #define OPENMP_TEAMS_CLAUSE(Name)                                              \
@@ -605,7 +615,7 @@ bool clang::isOpenMPTargetExecutionDirective(OpenMPDirectiveKind DKind) {
 bool clang::isOpenMPTargetDataManagementDirective(OpenMPDirectiveKind DKind) {
   // TODO add target update directive check.
   return DKind == OMPD_target_data || DKind == OMPD_target_enter_data ||
-         DKind == OMPD_target_exit_data;
+         DKind == OMPD_target_exit_data || DKind == OMPD_target_update;
 }
 
 bool clang::isOpenMPTeamsDirective(OpenMPDirectiveKind DKind) {