diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index ed2320c..2e3c75f 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -4989,6 +4989,7 @@
       case OMPC_seq_cst:
       case OMPC_acq_rel:
       case OMPC_acquire:
+      case OMPC_release:
       case OMPC_depend:
       case OMPC_threads:
       case OMPC_simd:
@@ -8575,9 +8576,9 @@
   OpenMPClauseKind MemOrderKind = OMPC_unknown;
   SourceLocation MemOrderLoc;
   for (const OMPClause *C : Clauses) {
-    if (C->getClauseKind() == OMPC_seq_cst ||
-        C->getClauseKind() == OMPC_acq_rel ||
-        C->getClauseKind() == OMPC_acquire) {
+    if (C->getClauseKind() == OMPC_acq_rel ||
+        C->getClauseKind() == OMPC_acquire ||
+        C->getClauseKind() == OMPC_release) {
       if (MemOrderKind != OMPC_unknown) {
         Diag(C->getBeginLoc(), diag::err_omp_several_mem_order_clauses)
             << getOpenMPDirectiveName(OMPD_flush) << 1
@@ -8953,7 +8954,8 @@
     }
     if (C->getClauseKind() == OMPC_seq_cst ||
         C->getClauseKind() == OMPC_acq_rel ||
-        C->getClauseKind() == OMPC_acquire) {
+        C->getClauseKind() == OMPC_acquire ||
+        C->getClauseKind() == OMPC_release) {
       if (MemOrderKind != OMPC_unknown) {
         Diag(C->getBeginLoc(), diag::err_omp_several_mem_order_clauses)
             << getOpenMPDirectiveName(OMPD_atomic) << 0
@@ -10893,6 +10895,7 @@
   case OMPC_seq_cst:
   case OMPC_acq_rel:
   case OMPC_acquire:
+  case OMPC_release:
   case OMPC_depend:
   case OMPC_threads:
   case OMPC_simd:
@@ -11607,6 +11610,7 @@
   case OMPC_seq_cst:
   case OMPC_acq_rel:
   case OMPC_acquire:
+  case OMPC_release:
   case OMPC_depend:
   case OMPC_threads:
   case OMPC_simd:
@@ -12031,6 +12035,7 @@
   case OMPC_seq_cst:
   case OMPC_acq_rel:
   case OMPC_acquire:
+  case OMPC_release:
   case OMPC_depend:
   case OMPC_device:
   case OMPC_threads:
@@ -12233,6 +12238,7 @@
   case OMPC_seq_cst:
   case OMPC_acq_rel:
   case OMPC_acquire:
+  case OMPC_release:
   case OMPC_depend:
   case OMPC_device:
   case OMPC_threads:
@@ -12412,6 +12418,9 @@
   case OMPC_acquire:
     Res = ActOnOpenMPAcquireClause(StartLoc, EndLoc);
     break;
+  case OMPC_release:
+    Res = ActOnOpenMPReleaseClause(StartLoc, EndLoc);
+    break;
   case OMPC_threads:
     Res = ActOnOpenMPThreadsClause(StartLoc, EndLoc);
     break;
@@ -12535,6 +12544,11 @@
   return new (Context) OMPAcquireClause(StartLoc, EndLoc);
 }
 
+OMPClause *Sema::ActOnOpenMPReleaseClause(SourceLocation StartLoc,
+                                          SourceLocation EndLoc) {
+  return new (Context) OMPReleaseClause(StartLoc, EndLoc);
+}
+
 OMPClause *Sema::ActOnOpenMPThreadsClause(SourceLocation StartLoc,
                                           SourceLocation EndLoc) {
   return new (Context) OMPThreadsClause(StartLoc, EndLoc);
@@ -12693,6 +12707,7 @@
   case OMPC_seq_cst:
   case OMPC_acq_rel:
   case OMPC_acquire:
+  case OMPC_release:
   case OMPC_device:
   case OMPC_threads:
   case OMPC_simd: