Improve frontend tests

Author: lbushi25

clang/test/CodeGenSYCL/work_group_memory.cpp

@@ -3,6 +3,10 @@
 // RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -fsycl-int-header=%t.h %s
 // RUN: FileCheck < %t.h %s --check-prefix CHECK-INT-HEADER
 //
+// Tests for work_group_memory kernel parameter using the dummy implementation in Inputs/sycl.hpp.
+// The first two RUN commands verify that the init call is generated with the correct arguments in LLVM IR
+// and the second two RUN commands verify the contents of the integration header produced by the frontend.
+//
 // CHECK-IR: define dso_local spir_kernel void @
 // CHECK-IR-SAME: ptr addrspace(3) noundef align 4 [[PTR:%[a-zA-Z0-9_]+]]
 //
@@ -14,8 +18,11 @@
 // CHECK-IR: call spir_func void @{{.*}}__init{{.*}}(ptr addrspace(4) noundef align 8 dereferenceable_or_null(8) %{{[a-zA-Z0-9_]+}}, ptr addrspace(3) noundef [[PTR_LOAD]])
 //
 // CHECK-INT-HEADER: const kernel_param_desc_t kernel_signatures[] = {
-// CHECK-INT-HEADER-NEXT: //{{.*}}
-// CHECK-INT-HEADER-NEXT: { kernel_param_kind_t::kind_work_group_memory, 8, 0 },
+// CHECK-INT-HEADER-NEXT: //--- _ZTSZZ4mainENKUlRN4sycl3_V17handlerEE_clES2_EUlNS0_4itemILi1EEEE_
+// CHECK-INT-HEADER-NEXT: { kernel_param_kind_t::kind_work_group_memory, {{[4,8]}}, 0 },
+// CHECK-INT-HEADER-EMPTY:
+// CHECK-INT-HEADER-NEXT: { kernel_param_kind_t::kind_invalid, -987654321, -987654321 },
+// CHECK-INT-HEADER-NEXT: }
 
 #include "Inputs/sycl.hpp"