[OpenMP] Parsing and sema support for target update directive

Summary:
This patch is to add parsing and sema support for `target update` directive. Support for the `to` and `from` clauses will be added by a different patch.  This patch also adds support for other clauses that are already implemented upstream and apply to `target update`, e.g. `device` and `if`.

This patch is based on the original post by Kelvin Li.

Reviewers: hfinkel, carlo.bertolli, kkwli0, arpith-jacob, ABataev

Subscribers: caomhin, cfe-commits

Differential Revision: http://reviews.llvm.org/D15944

llvm-svn: 270878

1 files changed, 43 insertions, 0 deletions

diff --git a/clang/test/OpenMP/target_update_device_messages.cpp b/clang/test/OpenMP/target_update_device_messages.cpp
new file mode 100644
index 00000000000..5bb0870641b
--- /dev/null
+++ b/clang/test/OpenMP/target_update_device_messages.cpp
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note 2 {{declared here}}
+
+template <class T, class S>
+int tmain(T argc, S **argv) {
+  int i;
+#pragma omp target update device // expected-error {{expected '(' after 'device'}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device () // expected-error {{expected expression}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc)) // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc > 0 ? argv[1] : argv[2]) // expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc + argc)  // expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc), device (argc+1) // expected-error {{directive '#pragma omp target update' cannot contain more than one 'device' clause}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (S1) // expected-error {{'S1' does not refer to a value}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (3.14) // expected-error {{expression must have integral or unscoped enumeration type, not 'double'}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (-2) // expected-error {{argument to 'device' clause must be a non-negative integer value}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+}
+
+int main(int argc, char **argv) {
+  int j;
+#pragma omp target update device // expected-error {{expected '(' after 'device'}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device () // expected-error {{expected expression}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc)) // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc > 0 ? argv[1] : argv[2]) // expected-error {{expression must have integral or unscoped enumeration type, not 'char *'}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc + argc) //  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (argc), device (argc+1) // expected-error {{directive '#pragma omp target update' cannot contain more than one 'device' clause}}  expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (S1) // expected-error {{'S1' does not refer to a value}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (-2) // expected-error {{argument to 'device' clause must be a non-negative integer value}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+#pragma omp target update device (3.14) // expected-error {{expression must have integral or unscoped enumeration type, not 'double'}} expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
+
+  return tmain(argc, argv);
+}