[SYCL] ext kernel compiler (#11517)

This is the implementation for the new "Kernel Compiler" which will
replace the Online Compiler.
Its pending spec is here: #11331

Author: cperkinsintel

sycl/doc/extensions/proposed/sycl_ext_oneapi_kernel_compiler.asciidoc renamed to sycl/doc/extensions/experimental/sycl_ext_oneapi_kernel_compiler.asciidoc

@@ -49,14 +49,12 @@ This extension also depends on the following other SYCL extensions:
 
 == Status
 
-This is a proposed extension specification, intended to gather community
-feedback.
-Interfaces defined in this specification may not be implemented yet or may be
-in a preliminary state.
-The specification itself may also change in incompatible ways before it is
-finalized.
-*Shipping software products should not rely on APIs defined in this
-specification.*
+This is an experimental extension specification, intended to provide early 
+access to features and gather community feedback. Interfaces defined in 
+this specification are implemented in DPC++, but they are not finalized 
+and may change incompatibly in future versions of DPC++ without prior notice. 
+*Shipping software products should not rely on APIs defined in 
+this specification.*
 
 
 == Overview

sycl/doc/extensions/proposed/sycl_ext_oneapi_kernel_compiler_opencl.asciidoc renamed to sycl/doc/extensions/experimental/sycl_ext_oneapi_kernel_compiler_opencl.asciidoc

@@ -49,14 +49,12 @@ This extension also depends on the following other SYCL extensions:
 
 == Status
 
-This is a proposed extension specification, intended to gather community
-feedback.
-Interfaces defined in this specification may not be implemented yet or may be
-in a preliminary state.
-The specification itself may also change in incompatible ways before it is
-finalized.
-*Shipping software products should not rely on APIs defined in this
-specification.*
+This is an experimental extension specification, intended to provide early 
+access to features and gather community feedback. Interfaces defined in 
+this specification are implemented in DPC++, but they are not finalized 
+and may change incompatibly in future versions of DPC++ without prior notice. 
+*Shipping software products should not rely on APIs defined in 
+this specification.*
 
 
 == Overview

sycl/include/sycl/ext/intel/experimental/online_compiler.hpp

@@ -75,7 +75,11 @@ enum class source_language { opencl_c = 0, cm = 1 };
 
 /// Represents an online compiler for the language given as template
 /// parameter.
-template <source_language Lang> class online_compiler {
+template <source_language Lang>
+class __SYCL2020_DEPRECATED(
+    "experimental online_compiler is being deprecated. See "
+    "'sycl_ext_oneapi_kernel_compiler.asciidoc' instead for new kernel "
+    "compiler extension to kernel_bundle implementation.") online_compiler {
 public:
   /// Constructs online compiler which can target any device and produces
   /// given compiled code format. Produces 64-bit device code.

sycl/include/sycl/ext/oneapi/properties/properties.hpp

@@ -241,6 +241,30 @@ struct ValueOrDefault<
   }
 };
 
+template <typename SyclT, typename PropertiesT> struct all_props_are_keys_of;
+
+template <typename SyclT, typename PropertiesT>
+struct all_props_are_keys_of : std::true_type {};
+
+template <typename SyclT>
+struct all_props_are_keys_of<
+    SyclT, ext::oneapi::experimental::detail::empty_properties_t>
+    : std::true_type {};
+
+template <typename SyclT, typename PropT>
+struct all_props_are_keys_of<
+    SyclT, ext::oneapi::experimental::properties<std::tuple<PropT>>>
+    : std::bool_constant<
+          ext::oneapi::experimental::is_property_key_of<PropT, SyclT>::value> {
+};
+
+template <typename SyclT, typename PropT, typename... PropTs>
+struct all_props_are_keys_of<
+    SyclT, ext::oneapi::experimental::properties<std::tuple<PropT, PropTs...>>>
+    : std::bool_constant<
+          ext::oneapi::experimental::is_property_key_of<PropT, SyclT>::value &&
+          all_props_are_keys_of<SyclT, PropTs...>()> {};
+
 } // namespace detail
 } // namespace ext::oneapi::experimental
 

sycl/include/sycl/ext/oneapi/properties/property.hpp

@@ -218,8 +218,10 @@ enum PropKind : uint32_t {
   CacheControlReadHint = 48,
   CacheControlReadAssertion = 49,
   CacheControlWrite = 50,
+  BuildOptions = 51,
+  BuildLog = 52,
   // PropKindSize must always be the last value.
-  PropKindSize = 51,
+  PropKindSize = 53,
 };
 
 // This trait must be specialized for all properties and must have a unique