[OpenMP] Code generation for teams - kernel launching

Summary:
This patch implements the launching of a target region in the presence of a nested teams region, i.e calls tgt_target_teams with the required arguments gathered from the enclosed teams directive.

The actual codegen of the region enclosed by the teams construct will be contributed in a separate patch.

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

Subscribers: cfe-commits, caomhin, fraggamuffin

Differential Revision: http://reviews.llvm.org/D17019

llvm-svn: 262625

1 files changed, 6 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index ddceb1b559c..7f4e19577ab 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -2716,8 +2716,12 @@ void CodeGenFunction::EmitOMPTargetDirective(const OMPTargetDirective &S) {
                                         CapturedVars);
 }
 
-void CodeGenFunction::EmitOMPTeamsDirective(const OMPTeamsDirective &) {
-  llvm_unreachable("CodeGen for 'omp teams' is not supported yet.");
+void CodeGenFunction::EmitOMPTeamsDirective(const OMPTeamsDirective &S) {
+  OMPLexicalScope Scope(*this, S);
+  const CapturedStmt &CS = *cast<CapturedStmt>(S.getAssociatedStmt());
+
+  // FIXME: We should fork teams here instead of just emit the statement.
+  EmitStmt(CS.getCapturedStmt());
 }
 
 void CodeGenFunction::EmitOMPCancellationPointDirective(