[SYCL] Fix for detection of free function calls.

Signed-off-by: rdeodhar <[email protected]>

Author: rdeodhar

clang/lib/Sema/SemaSYCL.cpp

@@ -2705,23 +2705,18 @@ class SyclKernelIntHeaderCreator : public SyclKernelFieldHandler {
 
   // Sets a flag if the kernel is a parallel_for that calls the
   // free function API "this_item".
-  void setThisItemIsCalled(const CXXRecordDecl *KernelObj,
-                           FunctionDecl *KernelFunc) {
+  void setThisItemIsCalled(FunctionDecl *KernelFunc) {
     if (getKernelInvocationKind(KernelFunc) != InvokeParallelFor)
       return;
 
-    const CXXMethodDecl *WGLambdaFn = getOperatorParens(KernelObj);
-    if (!WGLambdaFn)
-      return;
-
     // The call graph for this translation unit.
     CallGraph SYCLCG;
     SYCLCG.addToCallGraph(SemaRef.getASTContext().getTranslationUnitDecl());
     using ChildParentPair =
         std::pair<const FunctionDecl *, const FunctionDecl *>;
     llvm::SmallPtrSet<const FunctionDecl *, 16> Visited;
     llvm::SmallVector<ChildParentPair, 16> WorkList;
-    WorkList.push_back({WGLambdaFn, nullptr});
+    WorkList.push_back({KernelFunc, nullptr});
 
     while (!WorkList.empty()) {
       const FunctionDecl *FD = WorkList.back().first;
@@ -2759,7 +2754,7 @@ class SyclKernelIntHeaderCreator : public SyclKernelFieldHandler {
     bool IsSIMDKernel = isESIMDKernelType(KernelObj);
     Header.startKernel(Name, NameType, StableName, KernelObj->getLocation(),
                        IsSIMDKernel);
-    setThisItemIsCalled(KernelObj, KernelFunc);
+    setThisItemIsCalled(KernelFunc);
   }
 
   bool handleSyclAccessorType(const CXXRecordDecl *RD,