[SYCL] Move SYCL headers from CL/ to sycl/ (#6407)

`CL/sycl.hpp` is changed to include `sycl/sycl.hpp`. 

No deprecation warning emitted as the header is required by the SYCL 2020
for backward compatibility.

clang/docs/SYCLSupport.rst

@@ -72,7 +72,7 @@ This is also in line with the behaviour of CUDA (`small example
    template <typename T, address_space AS> class multi_ptr {
      // DecoratedType applies corresponding address space attribute to the type T
      // DecoratedType<T, global_space>::type == "__attribute__((opencl_global)) T"
-     // See sycl/include/CL/sycl/access/access.hpp for more details
+     // See sycl/include/sycl/access/access.hpp for more details
      using pointer_t = typename DecoratedType<T, AS>::type *;
 
      pointer_t m_Pointer;

clang/lib/Sema/SemaSYCL.cpp

@@ -4585,8 +4585,8 @@ void SYCLIntegrationHeader::emit(raw_ostream &O) {
   O << "// This is auto-generated SYCL integration header.\n";
   O << "\n";
 
-  O << "#include <CL/sycl/detail/defines_elementary.hpp>\n";
-  O << "#include <CL/sycl/detail/kernel_desc.hpp>\n";
+  O << "#include <sycl/detail/defines_elementary.hpp>\n";
+  O << "#include <sycl/detail/kernel_desc.hpp>\n";
 
   O << "\n";
 
@@ -5055,7 +5055,7 @@ bool SYCLIntegrationFooter::emit(raw_ostream &OS) {
     // We only want to emit the #includes if we have a variable that needs
     // them, so emit this one on the first time through the loop.
     if (!EmittedFirstSpecConstant && !DeviceGlobalsEmitted)
-      OS << "#include <CL/sycl/detail/defines_elementary.hpp>\n";
+      OS << "#include <sycl/detail/defines_elementary.hpp>\n";
 
     Visited.insert(VD);
     std::string TopShim = EmitShims(OS, ShimCounter, Policy, VD);
@@ -5101,10 +5101,10 @@ bool SYCLIntegrationFooter::emit(raw_ostream &OS) {
   }
 
   if (EmittedFirstSpecConstant)
-    OS << "#include <CL/sycl/detail/spec_const_integration.hpp>\n";
+    OS << "#include <sycl/detail/spec_const_integration.hpp>\n";
 
   if (DeviceGlobalsEmitted) {
-    OS << "#include <CL/sycl/detail/device_global_map.hpp>\n";
+    OS << "#include <sycl/detail/device_global_map.hpp>\n";
     DeviceGlobOS.flush();
     OS << "namespace sycl::detail {\n";
     OS << "namespace {\n";

clang/test/CodeGenSYCL/anonymous_integration_footer.cpp

@@ -9,7 +9,7 @@ int main() {
   cl::sycl::kernel_single_task<class first_kernel>([]() {});
 }
 
-// CHECK: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK: #include <sycl/detail/defines_elementary.hpp>
 
 using namespace cl;
 
@@ -402,4 +402,4 @@ constexpr sycl::specialization_id same_name{17};
 }
 } // namespace outer
 
-// CHECK: #include <CL/sycl/detail/spec_const_integration.hpp>
+// CHECK: #include <sycl/detail/spec_const_integration.hpp>

clang/test/CodeGenSYCL/anonymous_integration_footer2.cpp

@@ -9,7 +9,7 @@ int main() {
   cl::sycl::kernel_single_task<class first_kernel>([]() {});
 }
 
-// CHECK: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK: #include <sycl/detail/defines_elementary.hpp>
 
 using namespace cl;
 
@@ -155,4 +155,4 @@ constexpr sycl::specialization_id same_name{209};
 }
 }
 
-// CHECK: #include <CL/sycl/detail/spec_const_integration.hpp>
+// CHECK: #include <sycl/detail/spec_const_integration.hpp>

clang/test/CodeGenSYCL/device_global_int_footer_header.cpp

@@ -27,7 +27,7 @@ int main() {
 // CHECK-HEADER: } // namespace sycl
 // CHECK-HEADER: } // __SYCL_INLINE_NAMESPACE(cl)
 
-// CHECK-FOOTER: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK-FOOTER: #include <sycl/detail/defines_elementary.hpp>
 
 // Shims go before the registration.
 // CHECK-FOOTER: namespace Foo {
@@ -47,7 +47,7 @@ int main() {
 // CHECK-FOOTER-NEXT: } // namespace __sycl_detail
 // CHECK-FOOTER-NEXT: } // namespace
 
-// CHECK-FOOTER: #include <CL/sycl/detail/device_global_map.hpp>
+// CHECK-FOOTER: #include <sycl/detail/device_global_map.hpp>
 // CHECK-FOOTER: namespace sycl::detail {
 // CHECK-FOOTER-NEXT: namespace {
 // CHECK-FOOTER-NEXT: __sycl_device_global_registration::__sycl_device_global_registration() noexcept {

clang/test/CodeGenSYCL/device_globals_with_spec_ids.cpp

@@ -11,7 +11,7 @@ int main() {
   cl::sycl::kernel_single_task<class first_kernel>([]() {});
 }
 
-// CHECK: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK: #include <sycl/detail/defines_elementary.hpp>
 constexpr sycl::specialization_id a{2};
 // CHECK-NEXT: __SYCL_INLINE_NAMESPACE(cl) {
 // CHECK-NEXT: namespace sycl {
@@ -247,8 +247,8 @@ struct Wrapper {
 } // namespace
 } // namespace outer
 
-// CHECK: #include <CL/sycl/detail/spec_const_integration.hpp>
-// CHECK-NEXT: #include <CL/sycl/detail/device_global_map.hpp>
+// CHECK: #include <sycl/detail/spec_const_integration.hpp>
+// CHECK-NEXT: #include <sycl/detail/device_global_map.hpp>
 // CHECK-NEXT: namespace sycl::detail {
 // CHECK-NEXT: namespace {
 // CHECK-NEXT: __sycl_device_global_registration::__sycl_device_global_registration() noexcept {

clang/test/CodeGenSYCL/empty-integration-footer.cpp

@@ -1,5 +1,5 @@
 // RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -fsycl-int-footer=%t.h %s -emit-llvm -o %t.ll
 // RUN: FileCheck -input-file=%t.h %s --allow-empty
 
-// CHECK-NOT: #include <CL/sycl/detail/defines_elementary.hpp>
-// CHECK-NOT: #include <CL/sycl/detail/spec_const_integration.hpp>
+// CHECK-NOT: #include <sycl/detail/defines_elementary.hpp>
+// CHECK-NOT: #include <sycl/detail/spec_const_integration.hpp>

clang/test/CodeGenSYCL/int_header_without_kernels.cpp

@@ -23,9 +23,9 @@ using namespace cl::sycl::ext::oneapi;
 // CHECK-HEADER: } // namespace sycl
 // CHECK-HEADER: } // __SYCL_INLINE_NAMESPACE(cl)
 
-// CHECK-FOOTER: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK-FOOTER: #include <sycl/detail/defines_elementary.hpp>
 
-// CHECK-FOOTER: #include <CL/sycl/detail/device_global_map.hpp>
+// CHECK-FOOTER: #include <sycl/detail/device_global_map.hpp>
 // CHECK-FOOTER: namespace sycl::detail {
 // CHECK-FOOTER-NEXT: namespace {
 // CHECK-FOOTER-NEXT: __sycl_device_global_registration::__sycl_device_global_registration() noexcept {

clang/test/CodeGenSYCL/integration_footer.cpp

@@ -7,7 +7,7 @@ int main() {
   cl::sycl::kernel_single_task<class first_kernel>([]() {});
 }
 
-// CHECK: #include <CL/sycl/detail/defines_elementary.hpp>
+// CHECK: #include <sycl/detail/defines_elementary.hpp>
 
 using namespace cl::sycl;
 
@@ -200,4 +200,4 @@ auto &y = GlobalWrapper<int>::template sc<20>;
 // CHECK-NOT: inline const char *get_spec_constant_symbolic_ID_impl<::GlobalWrapper<int>::sc>()
 // CHECK: inline const char *get_spec_constant_symbolic_ID_impl<::GlobalWrapper<int>::sc<20>>()
 
-// CHECK: #include <CL/sycl/detail/spec_const_integration.hpp>
+// CHECK: #include <sycl/detail/spec_const_integration.hpp>

clang/test/CodeGenSYCL/integration_header.cpp

@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -sycl-std=2020 -fsycl-int-header=%t.h %s -emit-llvm -o %t.ll
 // RUN: FileCheck -input-file=%t.h %s
 //
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 //
 // CHECK: class first_kernel;
 // CHECK-NEXT: namespace second_namespace {

clang/test/CodeGenSYCL/kernel-param-acc-array-ih.cpp

@@ -4,7 +4,7 @@
 // This test checks the integration header generated when
 // the kernel argument is an Accessor array.
 
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 
 // CHECK: class kernel_A;
 

clang/test/CodeGenSYCL/kernel-param-member-acc-array-ih.cpp

@@ -4,7 +4,7 @@
 // This test checks the integration header when kernel argument
 // is a struct containing an Accessor array.
 
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 
 // CHECK: class kernel_C;
 

clang/test/CodeGenSYCL/kernel-param-pod-array-ih.cpp

@@ -3,7 +3,7 @@
 // This test checks the integration header generated for a kernel
 // with an argument that is a POD array.
 
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 
 // CHECK: class kernel_B;
 

clang/test/CodeGenSYCL/union-kernel-param-ih.cpp

@@ -4,7 +4,7 @@
 // This test checks the integration header generated when
 // the kernel argument is union.
 
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 
 // CHECK: class kernel_A;
 

clang/test/CodeGenSYCL/wrapped-accessor.cpp

@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -fsycl-int-header=%t.h %s -o %t.out
 // RUN: FileCheck -input-file=%t.h %s
 //
-// CHECK: #include <CL/sycl/detail/kernel_desc.hpp>
+// CHECK: #include <sycl/detail/kernel_desc.hpp>
 
 // CHECK: class wrapped_access;
 

clang/test/SemaSYCL/Inputs/CL/sycl/detail/kernel_desc.hpp → clang/test/SemaSYCL/Inputs/sycl/detail/kernel_desc.hpp

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <CL/sycl/detail/defines_elementary.hpp>
+#include <sycl/detail/defines_elementary.hpp>
 
 __SYCL_INLINE_NAMESPACE(cl) {
   namespace sycl {

libdevice/include/assert-happened.hpp

@@ -13,7 +13,7 @@
 #ifdef __SPIR__
 
 // NOTE Layout of this structure should be aligned with the one in
-// sycl/include/CL/sycl/detail/assert_happened.hpp
+// sycl/include/sycl/detail/assert_happened.hpp
 struct AssertHappened {
   int Flag = 0;
   char Expr[256 + 1] = "";

llvm/test/SYCLLowerIR/printf_addrspace/Inputs/experimental-printf-bad-inline-test.cpp

@@ -1,4 +1,4 @@
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 SYCL_EXTERNAL void custom_wrapper(const char *S) {
   sycl::ext::oneapi::experimental::printf(S);

llvm/test/SYCLLowerIR/printf_addrspace/Inputs/experimental-printf-compile-time-unknown.cpp

@@ -1,4 +1,4 @@
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 using namespace sycl;
 

llvm/test/SYCLLowerIR/printf_addrspace/Inputs/experimental-printf.cpp

@@ -1,4 +1,4 @@
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 using namespace sycl;
 

sycl/.gitignore

@@ -1,2 +1,2 @@
-include/CL/sycl/version.hpp
-include/CL/sycl/feature_test.hpp
+include/sycl/version.hpp
+include/sycl/feature_test.hpp

sycl/CMakeLists.txt

@@ -154,9 +154,9 @@ set(sycl_inc_dir ${CMAKE_CURRENT_SOURCE_DIR}/include)
 set(sycl_src_dir ${CMAKE_CURRENT_SOURCE_DIR}/source)
 set(sycl_plugin_dir ${CMAKE_CURRENT_SOURCE_DIR}/plugins)
 string(TIMESTAMP __SYCL_COMPILER_VERSION "%Y%m%d")
-set(version_header "${sycl_inc_dir}/CL/sycl/version.hpp")
+set(version_header "${sycl_inc_dir}/sycl/version.hpp")
 configure_file("${version_header}.in" "${version_header}")
-set(feature_header "${sycl_inc_dir}/CL/sycl/feature_test.hpp")
+set(feature_header "${sycl_inc_dir}/sycl/feature_test.hpp")
 configure_file("${feature_header}.in" "${feature_header}")
 
 include(AddBoostMp11Headers)

sycl/doc/FAQ.md

@@ -94,11 +94,11 @@ library is listed in the correct environment variable: `LD_LIBRARY_PATH`
 Example error message:
 ```
 In file included from example.cpp:1:
-In file included from C:\compiler\lib\clang\10.0.0\include\CL/sycl.hpp:11:
-In file included from C:\compiler\lib\clang\10.0.0\include\CL/sycl/accessor.hpp:13:
-In file included from C:\compiler\lib\clang\10.0.0\include\CL/sycl/buffer.hpp:10:
-In file included from C:\compiler\lib\clang\10.0.0\include\CL/sycl/detail/buffer_impl.hpp:14:
-In file included from C:\compiler\lib\clang\10.0.0\include\CL/sycl/detail/aligned_allocator.hpp:16:
+In file included from C:\compiler\lib\clang\10.0.0\include\sycl/sycl.hpp:11:
+In file included from C:\compiler\lib\clang\10.0.0\include\sycl/accessor.hpp:13:
+In file included from C:\compiler\lib\clang\10.0.0\include\sycl/buffer.hpp:10:
+In file included from C:\compiler\lib\clang\10.0.0\include\sycl/detail/buffer_impl.hpp:14:
+In file included from C:\compiler\lib\clang\10.0.0\include\sycl/detail/aligned_allocator.hpp:16:
 C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.22.27905\include\algorithm(4493,9): error: SYCL kernel cannot call a
       dllimport function
         _STL_ASSERT(!(_Left < _Right), "invalid comparator");

sycl/doc/GetStartedGuide.md

@@ -563,7 +563,7 @@ A simple DPC++ or SYCL\* program consists of following parts:
 Creating a file `simple-sycl-app.cpp` with the following C++/SYCL code:
 
 ```c++
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 int main() {
   // Creating buffer of 4 ints to be used inside the kernel code
@@ -737,7 +737,7 @@ The example below illustrates how to use `cl::sycl::device_selector` to create
 device and queue objects bound to Intel GPU device:
 
 ```c++
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 int main() {
   class NEOGPUDeviceSelector : public cl::sycl::device_selector {

sycl/doc/design/Assert.md

@@ -234,7 +234,7 @@ device binary image descriptor's property sets.
 
 Each device image is supplied with an array of property sets. For description
 of property sets see `struct pi_device_binary_struct` in
-[`pi.h`](https://github.com/intel/llvm/blob/sycl/sycl/include/CL/sycl/detail/pi.h#L692)
+[`pi.h`](https://github.com/intel/llvm/blob/sycl/sycl/include/sycl/detail/pi.h#L692)
 
 A distinct property set `SYCL/assert used` is added. In this set a property
 with the name of the kernel is added whenever the kernel uses assert. The use of

sycl/doc/design/CompilerAndRuntimeDesign.md

@@ -855,7 +855,7 @@ For instance:
 template <typename T, address_space AS> class multi_ptr {
   // DecoratedType applies corresponding address space attribute to the type T
   // DecoratedType<T, global_space>::type == "__attribute__((opencl_global)) T"
-  // See sycl/include/CL/sycl/access/access.hpp for more details
+  // See sycl/include/sycl/access/access.hpp for more details
   using pointer_t = typename DecoratedType<T, AS>::type *;
  
   pointer_t m_Pointer;

sycl/doc/design/GlobalObjectsInRuntime.md

@@ -17,7 +17,7 @@ At the same time, SYCL users may want to construct some SYCL objects globally,
 like in example below:
 
 ```
-#include <CL/sycl.hpp>
+#include <sycl/sycl.hpp>
 
 sycl::queue Queue;
 

sycl/doc/design/KernelProgramCache.md

@@ -284,7 +284,7 @@ following is done:
 All fields are atomic because they can be accessed from multiple threads.
 
 A specialization of helper class
-[Locked](https://github.com/intel/llvm/blob/sycl/sycl/include/CL/sycl/detail/locked.hpp)
+[Locked](https://github.com/intel/llvm/blob/sycl/sycl/include/sycl/detail/locked.hpp)
 for reference of proper mapping is returned by Acquire function. The use of this
 class implements RAII to make code look cleaner a bit. Now, GetCache function
 will return the mapping to be employed that includes the 3 components: kernel

sycl/doc/design/PluginInterface.md

@@ -72,8 +72,8 @@ SYCL_PI_TRACE=-1 lists all PI Traces above and more debug messages.
 
 #### Plugin binary interface
 Plugins should implement all the Interface APIs required for the PI Version
-it supports. There is [pi.def](../../include/CL/sycl/detail/pi.def)/
-[pi.h](../../include/CL/sycl/detail/pi.h) file listing all PI API names that
+it supports. There is [pi.def](../../include/sycl/detail/pi.def)/
+[pi.h](../../include/sycl/detail/pi.h) file listing all PI API names that
 can be called by the specific version of Plugin Interface.
 It exports a function - "piPluginInit" that returns the plugin details and
 function pointer table containing the list of pointers to implemented Interface
@@ -149,7 +149,7 @@ into
 - **Interoperability API** which allows interoperability with underlying
 runtimes such as OpenCL.
 
-See [pi.h](../../include/CL/sycl/detail/pi.h) header for the full list and
+See [pi.h](../../include/sycl/detail/pi.h) header for the full list and
 descriptions of PI APIs.
 
 ### The Core OpenCL-based PI APIs

sycl/doc/design/SYCL2020-SpecializationConstants.md

@@ -818,7 +818,7 @@ inline const char *get_spec_constant_symbolic_ID<id_float>() {
 } // __SYCL_INLINE_NAMESPACE(cl)
 
 // Detailed description of this header is provided below in corresponding RT section
-#include <CL/sycl/detail/spec_const_integration.hpp>
+#include <sycl/detail/spec_const_integration.hpp>
 ```
 
 Note that `get_spec_constant_symbolic_ID` specialization are generated for each
@@ -915,7 +915,7 @@ namespace sycl {
   }
 }
 
-#include <CL/sycl/detail/spec_const_integration.hpp>
+#include <sycl/detail/spec_const_integration.hpp>
 ```
 
 ### DPC++ runtime

sycl/doc/design/SYCLInstrumentationUsingXPTI.md

@@ -78,7 +78,7 @@ plugin interface (PI) layer `initialize()` call. In this call, we will
 perform two operations:
 
 1. Initialize all listeners and create a trace event to represent the graph.
-This is done in `sycl/include/CL/sycl/detail/pi.cpp`.
+This is done in `sycl/include/sycl/detail/pi.cpp`.
 2. Send a `graph_create` event to all subscribers. This notification
 will only be sent once.
 

sycl/doc/developer/ABIPolicyGuide.md

@@ -129,4 +129,4 @@ At the end of this window we will increment major version of the DPC++ library
 1. If there is a need to add a new field in `sycl::handler` or/and
    `sycl::detail::CG` classes it can be done without breaking ABI using the
    approach described in the comment at the beggining of
-   [cg.hpp](../../include/CL/sycl/detail/cg.hpp)
+   [cg.hpp](../../include/sycl/detail/cg.hpp)