[OPENMP] Codegen for `target simd` construct.

Added codegen support for `target simd` directive.

llvm-svn: 318536
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 1c127c6..0a48133 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -6823,13 +6823,24 @@
   // 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_target_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_target_simd, getCollapseNumberExpr(Clauses),
-                      getOrderedNumberExpr(Clauses), AStmt, *this, *DSAStack,
+                      getOrderedNumberExpr(Clauses), CS, *this, *DSAStack,
                       VarsWithImplicitDSA, B);
   if (NestedLoopCount == 0)
     return StmtError();