[OPENMP] Codegen for distribute parallel for simd directive.

Added proper codegen for `distribute parallel for simd` directive.

llvm-svn: 319078

Author: alexey-bataev

clang/lib/Basic/OpenMPKinds.cpp

@@ -885,6 +885,7 @@ void clang::getOpenMPCaptureRegions(
   case OMPD_parallel_for_simd:
   case OMPD_parallel_sections:
   case OMPD_distribute_parallel_for:
+  case OMPD_distribute_parallel_for_simd:
     CaptureRegions.push_back(OMPD_parallel);
     break;
   case OMPD_target_teams:
@@ -930,7 +931,6 @@ void clang::getOpenMPCaptureRegions(
   case OMPD_task:
   case OMPD_taskloop:
   case OMPD_taskloop_simd:
-  case OMPD_distribute_parallel_for_simd:
   case OMPD_distribute_simd:
   case OMPD_teams_distribute_simd:
   case OMPD_teams_distribute_parallel_for_simd:

clang/lib/Sema/SemaOpenMP.cpp

@@ -6838,13 +6838,24 @@ StmtResult Sema::ActOnOpenMPDistributeParallelForSimdDirective(
   // The point of exit cannot be a branch out of the structured block.
   // longjmp() and throw() must not violate the entry/exit criteria.
   CS->getCapturedDecl()->setNothrow();
+  for (int ThisCaptureLevel =
+           getOpenMPCaptureLevels(OMPD_distribute_parallel_for_simd);
+       ThisCaptureLevel > 1; --ThisCaptureLevel) {
+    CS = cast<CapturedStmt>(CS->getCapturedStmt());
+    // 1.2.2 OpenMP Language Terminology
+    // Structured block - An executable statement with a single entry at the
+    // top and a single exit at the bottom.
+    // The point of exit cannot be a branch out of the structured block.
+    // longjmp() and throw() must not violate the entry/exit criteria.
+    CS->getCapturedDecl()->setNothrow();
+  }
 
   OMPLoopDirective::HelperExprs B;
   // In presence of clause 'collapse' with number of loops, it will
   // define the nested loops number.
   unsigned NestedLoopCount = CheckOpenMPLoop(
       OMPD_distribute_parallel_for_simd, getCollapseNumberExpr(Clauses),
-      nullptr /*ordered not a clause on distribute*/, AStmt, *this, *DSAStack,
+      nullptr /*ordered not a clause on distribute*/, CS, *this, *DSAStack,
       VarsWithImplicitDSA, B);
   if (NestedLoopCount == 0)
     return StmtError();
@@ -7793,14 +7804,14 @@ static OpenMPDirectiveKind getOpenMPCaptureRegionForClause(
       CaptureRegion = OMPD_teams;
       break;
     case OMPD_distribute_parallel_for:
+    case OMPD_distribute_parallel_for_simd:
       CaptureRegion = OMPD_parallel;
       break;
     case OMPD_parallel_for:
     case OMPD_parallel_for_simd:
     case OMPD_target_teams_distribute_parallel_for:
     case OMPD_target_teams_distribute_parallel_for_simd:
     case OMPD_teams_distribute_parallel_for_simd:
-    case OMPD_distribute_parallel_for_simd:
       // Do not capture schedule clause expressions.
       break;
     case OMPD_task: