[OPENMP50]Fix handling of clauses in parallel master taskloop directive.

We need to capture correctly the value of num_tasks clause and should
not try to emit the if clause at all in the task region.

Author: alexey-bataev

clang/lib/CodeGen/CGStmtOpenMP.cpp

@@ -2018,12 +2018,14 @@ static void emitCommonSimdLoop(CodeGenFunction &CGF, const OMPLoopDirective &S,
     BodyCodeGen(CGF);
   };
   const Expr *IfCond = nullptr;
-  for (const auto *C : S.getClausesOfKind<OMPIfClause>()) {
-    if (CGF.getLangOpts().OpenMP >= 50 &&
-        (C->getNameModifier() == OMPD_unknown ||
-         C->getNameModifier() == OMPD_simd)) {
-      IfCond = C->getCondition();
-      break;
+  if (isOpenMPSimdDirective(S.getDirectiveKind())) {
+    for (const auto *C : S.getClausesOfKind<OMPIfClause>()) {
+      if (CGF.getLangOpts().OpenMP >= 50 &&
+          (C->getNameModifier() == OMPD_unknown ||
+           C->getNameModifier() == OMPD_simd)) {
+        IfCond = C->getCondition();
+        break;
+      }
     }
   }
   if (IfCond) {
@@ -5682,7 +5684,7 @@ void CodeGenFunction::EmitOMPParallelMasterTaskLoopDirective(
       Action.Enter(CGF);
       CGF.EmitOMPTaskLoopBasedDirective(S);
     };
-    OMPLexicalScope Scope(CGF, S, llvm::None, /*EmitPreInitStmt=*/false);
+    OMPLexicalScope Scope(CGF, S, OMPD_parallel, /*EmitPreInitStmt=*/false);
     CGM.getOpenMPRuntime().emitMasterRegion(CGF, TaskLoopCodeGen,
                                             S.getBeginLoc());
   };

clang/test/OpenMP/parallel_master_taskloop_codegen.cpp

@@ -1,10 +1,10 @@
-// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -x c++ -emit-llvm %s -o - -femit-all-decls | FileCheck %s
-// RUN: %clang_cc1 -fopenmp -x c++ -triple x86_64-apple-darwin10 -emit-pch -o %t %s
-// RUN: %clang_cc1 -fopenmp -x c++ -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - -femit-all-decls | FileCheck %s
+// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -fopenmp-version=50 -x c++ -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-apple-darwin10 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
 
-// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp-simd -x c++ -emit-llvm %s -o - -femit-all-decls | FileCheck --check-prefix SIMD-ONLY0 %s
-// RUN: %clang_cc1 -fopenmp-simd -x c++ -triple x86_64-apple-darwin10 -emit-pch -o %t %s
-// RUN: %clang_cc1 -fopenmp-simd -x c++ -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - -femit-all-decls | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp-simd -fopenmp-version=50 -x c++ -emit-llvm %s -o - | FileCheck --check-prefix SIMD-ONLY0 %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-apple-darwin10 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
 // SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
 // expected-no-diagnostics
 #ifndef HEADER