[CIR][OpenMP] Implementation of taskwait, taskyield and barrier

[eZWALT]

This solves #499. I think this might be unnecessary, but I wasn't able to correctly compile the ClangIR project without the definitions I've added to openmp cmake as described in llvm/llvm-project#73249. Feedback is greatly appreciated!

[github-actions]

⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

You can test this locally with the following command:

git-clang-format --diff 9a9729e3ddb7ac6580954cc332ac032c0256b538 45e88e7323cf7ab702ed2140fa1afa4fbe17d01b -- clang/test/CIR/CodeGen/barrier.cpp clang/test/CIR/CodeGen/taskwait.cpp clang/test/CIR/CodeGen/taskyield.cpp clang/lib/CIR/CodeGen/CIRGenFunction.h clang/lib/CIR/CodeGen/CIRGenStmt.cpp clang/lib/CIR/CodeGen/CIRGenStmtOpenMP.cpp

View the diff from clang-format here.

diff --git a/clang/lib/CIR/CodeGen/CIRGenFunction.h b/clang/lib/CIR/CodeGen/CIRGenFunction.h
index a12cd2f636..c21416daa6 100644
--- a/clang/lib/CIR/CodeGen/CIRGenFunction.h
+++ b/clang/lib/CIR/CodeGen/CIRGenFunction.h
@@ -992,9 +992,10 @@ public:
   // OpenMP gen functions:
   mlir::LogicalResult buildOMPParallelDirective(const OMPParallelDirective &S);
   mlir::LogicalResult buildOMPTaskwaitDirective(const OMPTaskwaitDirective &S);
-  mlir::LogicalResult buildOMPTaskyieldDirective(const OMPTaskyieldDirective &S);
+  mlir::LogicalResult
+  buildOMPTaskyieldDirective(const OMPTaskyieldDirective &S);
   mlir::LogicalResult buildOMPBarrierDirective(const OMPBarrierDirective &S);
-  
+
   LValue buildOpaqueValueLValue(const OpaqueValueExpr *e);
 
   /// Emit code to compute a designator that specifies the location
diff --git a/clang/lib/CIR/CodeGen/CIRGenStmt.cpp b/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
index 7fd01b2b9f..582a782ceb 100644
--- a/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenStmt.cpp
@@ -180,8 +180,8 @@ mlir::LogicalResult CIRGenFunction::buildStmt(const Stmt *S,
     return buildOMPTaskwaitDirective(cast<OMPTaskwaitDirective>(*S));
   case Stmt::OMPTaskyieldDirectiveClass:
     return buildOMPTaskyieldDirective(cast<OMPTaskyieldDirective>(*S));
-  case Stmt::OMPBarrierDirectiveClass: 
-    return buildOMPBarrierDirective(cast<OMPBarrierDirective>(*S)); 
+  case Stmt::OMPBarrierDirectiveClass:
+    return buildOMPBarrierDirective(cast<OMPBarrierDirective>(*S));
   // Unsupported AST nodes:
   case Stmt::CapturedStmtClass:
   case Stmt::ObjCAtTryStmtClass:
diff --git a/clang/lib/CIR/CodeGen/CIRGenStmtOpenMP.cpp b/clang/lib/CIR/CodeGen/CIRGenStmtOpenMP.cpp
index b7044bd580..5239ae7a24 100644
--- a/clang/lib/CIR/CodeGen/CIRGenStmtOpenMP.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenStmtOpenMP.cpp
@@ -44,7 +44,7 @@ CIRGenFunction::buildOMPParallelDirective(const OMPParallelDirective &S) {
   return res;
 }
 
-mlir::LogicalResult 
+mlir::LogicalResult
 CIRGenFunction::buildOMPTaskwaitDirective(const OMPTaskwaitDirective &S) {
   mlir::LogicalResult res = mlir::success();
   // Getting the source location information of AST node S scope
@@ -53,10 +53,9 @@ CIRGenFunction::buildOMPTaskwaitDirective(const OMPTaskwaitDirective &S) {
   auto taskwaitOp = builder.create<mlir::omp::TaskwaitOp>(scopeLoc);
 
   return res;
-
 }
-mlir::LogicalResult 
-CIRGenFunction::buildOMPTaskyieldDirective(const OMPTaskyieldDirective &S){
+mlir::LogicalResult
+CIRGenFunction::buildOMPTaskyieldDirective(const OMPTaskyieldDirective &S) {
   mlir::LogicalResult res = mlir::success();
   // Getting the source location information of AST node S scope
   auto scopeLoc = getLoc(S.getSourceRange());
@@ -67,7 +66,7 @@ CIRGenFunction::buildOMPTaskyieldDirective(const OMPTaskyieldDirective &S){
 }
 
 mlir::LogicalResult
-CIRGenFunction::buildOMPBarrierDirective(const OMPBarrierDirective &S){
+CIRGenFunction::buildOMPBarrierDirective(const OMPBarrierDirective &S) {
   mlir::LogicalResult res = mlir::success();
   // Getting the source location information of AST node S scope
   auto scopeLoc = getLoc(S.getSourceRange());