[OpenMP] Initial implementation of teams distribute code generation

https://reviews.llvm.org/D38371

This patch implements codegen for the combined 'teams distribute" OpenMP pragma and adds regression tests for all its clauses.

llvm-svn: 314905
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 81fea56..63ef808 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -2043,7 +2043,8 @@
   case OMPD_parallel_for:
   case OMPD_parallel_for_simd:
   case OMPD_parallel_sections:
-  case OMPD_teams: {
+  case OMPD_teams:
+  case OMPD_teams_distribute: {
     QualType KmpInt32Ty = Context.getIntTypeForBitwidth(32, 1);
     QualType KmpInt32PtrTy =
         Context.getPointerType(KmpInt32Ty).withConst().withRestrict();
@@ -2166,7 +2167,6 @@
   case OMPD_distribute_parallel_for_simd:
   case OMPD_distribute_simd:
   case OMPD_distribute_parallel_for:
-  case OMPD_teams_distribute:
   case OMPD_teams_distribute_simd:
   case OMPD_teams_distribute_parallel_for_simd:
   case OMPD_teams_distribute_parallel_for: