[OPENMP]Initial support for 'allocate' clause.

Added parsing/sema analysis of the allocate clause.

llvm-svn: 357068
diff --git a/clang/test/OpenMP/distribute_simd_lastprivate_messages.cpp b/clang/test/OpenMP/distribute_simd_lastprivate_messages.cpp
index 875210e..6037551 100644
--- a/clang/test/OpenMP/distribute_simd_lastprivate_messages.cpp
+++ b/clang/test/OpenMP/distribute_simd_lastprivate_messages.cpp
@@ -2,6 +2,7 @@
 
 // RUN: %clang_cc1 -verify -fopenmp-simd %s
 
+extern int omp_default_mem_alloc;
 void foo() {
 }
 
@@ -211,7 +212,7 @@
     foo();
 #pragma omp target
 #pragma omp teams
-#pragma omp distribute simd lastprivate(argc)
+#pragma omp distribute simd lastprivate(argc) allocate , allocate(, allocate(omp_default , allocate(omp_default_mem_alloc, allocate(omp_default_mem_alloc:, allocate(omp_default_mem_alloc: argc, allocate(omp_default_mem_alloc: argv), allocate(argv) // expected-error {{expected '(' after 'allocate'}} expected-error 2 {{expected expression}} expected-error 2 {{expected ')'}} expected-error {{use of undeclared identifier 'omp_default'}} expected-note 2 {{to match this '('}}
   for (i = 0; i < argc; ++i)
     foo();
 #pragma omp target