Revert "[SYCL] Support online_compiler::compile compiled with pre-C…

…++11 ABI" (#16248)

Reverts #16179

```
template <source_language Lang>
__SYCL_EXPORT std::vector<byte> online_compiler<Lang>::compile_impl(
    detail::string_view Src, detail::string_view DeviceStepping,
    const std::vector<detail::string_view> &Options) {
```

accesses `this->CompileToSPIRVHandle` which is laid out *after*
`std::string` data member:

```
  /// Target device stepping (implementation defined)
  std::string DeviceStepping;

  /// Handles to helper functions used by the implementation.
  void *CompileToSPIRVHandle = nullptr;
```

resulting in ABI incompatibility.

sycl/include/sycl/detail/string_view.hpp

@@ -37,19 +37,14 @@ class string_view {
 
   const char *data() const noexcept { return str; }
 
-  friend bool operator==(string_view lhs, std::string_view rhs) noexcept {
+  friend bool operator==(const string_view &lhs,
+                         std::string_view rhs) noexcept {
     return rhs == lhs.data();
   }
-  friend bool operator==(std::string_view lhs, string_view rhs) noexcept {
+  friend bool operator==(std::string_view lhs,
+                         const string_view &rhs) noexcept {
     return lhs == rhs.data();
   }
-
-  friend bool operator!=(string_view lhs, std::string_view rhs) noexcept {
-    return rhs != lhs.data();
-  }
-  friend bool operator!=(std::string_view lhs, string_view rhs) noexcept {
-    return lhs != rhs.data();
-  }
 };
 
 } // namespace detail

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

@@ -81,21 +81,6 @@ 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 {
-  __SYCL_EXPORT std::vector<byte>
-  compile_impl(sycl::detail::string_view Src,
-               sycl::detail::string_view DeviceStepping,
-               const std::vector<sycl::detail::string_view> &Options);
-
-  std::vector<byte> compile_impl(const std::string &Source,
-                                 const std::vector<std::string> &UserArgs) {
-    std::vector<sycl::detail::string_view> Args;
-    for (auto &&Arg : UserArgs)
-      Args.emplace_back(Arg);
-
-    return compile_impl(std::string_view{Source},
-                        std::string_view{DeviceStepping}, Args);
-  }
-
 public:
   /// Constructs online compiler which can target any device and produces
   /// given compiled code format. Produces 64-bit device code.
@@ -211,17 +196,9 @@ class __SYCL2020_DEPRECATED(
 ///   OpenCL JIT compiler options must be supported.
 template <>
 template <>
-#if !defined(__SYCL_ONLINE_COMPILER_CPP) ||                                    \
-    defined(__INTEL_PREVIEW_BREAKING_CHANGES)
-inline
-#else
-__SYCL_EXPORT
-#endif
-    std::vector<byte>
-    online_compiler<source_language::opencl_c>::compile(
-        const std::string &src, const std::vector<std::string> &options) {
-  return compile_impl(src, options);
-}
+__SYCL_EXPORT std::vector<byte>
+online_compiler<source_language::opencl_c>::compile(
+    const std::string &src, const std::vector<std::string> &options);
 
 /// Compiles the given OpenCL source. May throw \c online_compile_error.
 /// @param src - contents of the source.
@@ -237,17 +214,8 @@ online_compiler<source_language::opencl_c>::compile(const std::string &src) {
 /// @param options - compilation options (implementation defined).
 template <>
 template <>
-#if !defined(__SYCL_ONLINE_COMPILER_CPP) ||                                    \
-    defined(__INTEL_PREVIEW_BREAKING_CHANGES)
-inline
-#else
-__SYCL_EXPORT
-#endif
-    std::vector<byte>
-    online_compiler<source_language::cm>::compile(
-        const std::string &src, const std::vector<std::string> &options) {
-  return compile_impl(src, options);
-}
+__SYCL_EXPORT std::vector<byte> online_compiler<source_language::cm>::compile(
+    const std::string &src, const std::vector<std::string> &options);
 
 /// Compiles the given CM source \p src.
 template <>

sycl/source/detail/online_compiler/online_compiler.cpp

@@ -6,8 +6,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define __SYCL_ONLINE_COMPILER_CPP
-
 #include <sycl/detail/os_util.hpp>
 #include <sycl/detail/ur.hpp>
 #include <sycl/ext/intel/experimental/online_compiler.hpp>
@@ -21,11 +19,9 @@ inline namespace _V1 {
 namespace ext::intel::experimental {
 namespace detail {
 
-using namespace sycl::detail;
-
 static std::vector<const char *>
 prepareOclocArgs(sycl::info::device_type DeviceType, device_arch DeviceArch,
-                 bool Is64Bit, string_view DeviceStepping,
+                 bool Is64Bit, const std::string &DeviceStepping,
                  const std::string &UserArgs) {
   std::vector<const char *> Args = {"ocloc", "-q", "-spv_only", "-device"};
 
@@ -58,7 +54,7 @@ prepareOclocArgs(sycl::info::device_type DeviceType, device_arch DeviceArch,
 
   if (DeviceStepping != "") {
     Args.push_back("-revision_id");
-    Args.push_back(DeviceStepping.data());
+    Args.push_back(DeviceStepping.c_str());
   }
 
   Args.push_back(Is64Bit ? "-64" : "-32");
@@ -86,11 +82,11 @@ prepareOclocArgs(sycl::info::device_type DeviceType, device_arch DeviceArch,
 ///                                 allocated during the compilation.
 /// @param UserArgs - User's options to ocloc compiler.
 static std::vector<byte>
-compileToSPIRV(string_view Src, sycl::info::device_type DeviceType,
-               device_arch DeviceArch, bool Is64Bit, string_view DeviceStepping,
-               void *&CompileToSPIRVHandle, void *&FreeSPIRVOutputsHandle,
+compileToSPIRV(const std::string &Source, sycl::info::device_type DeviceType,
+               device_arch DeviceArch, bool Is64Bit,
+               const std::string &DeviceStepping, void *&CompileToSPIRVHandle,
+               void *&FreeSPIRVOutputsHandle,
                const std::vector<std::string> &UserArgs) {
-  std::string Source{Src.data()};
 
   if (!CompileToSPIRVHandle) {
 #ifdef __SYCL_RT_OS_WINDOWS
@@ -202,10 +198,11 @@ compileToSPIRV(string_view Src, sycl::info::device_type DeviceType,
 }
 } // namespace detail
 
-template <source_language Lang>
-__SYCL_EXPORT std::vector<byte> online_compiler<Lang>::compile_impl(
-    detail::string_view Src, detail::string_view DeviceStepping,
-    const std::vector<detail::string_view> &Options) {
+template <>
+template <>
+__SYCL_EXPORT std::vector<byte>
+online_compiler<source_language::opencl_c>::compile(
+    const std::string &Source, const std::vector<std::string> &UserArgs) {
 
   if (OutputFormatVersion != std::pair<int, int>{0, 0}) {
     std::string Version = std::to_string(OutputFormatVersion.first) + ", " +
@@ -214,27 +211,29 @@ __SYCL_EXPORT std::vector<byte> online_compiler<Lang>::compile_impl(
                                Version + ") is not supported yet");
   }
 
-  std::vector<std::string> UserArgs;
-  for (auto &&Opt : Options)
-    UserArgs.emplace_back(Opt.data());
-
-  if constexpr (Lang == source_language::cm)
-    UserArgs.push_back("-cmc");
-
-  return detail::compileToSPIRV(Src, DeviceType, DeviceArch, Is64Bit,
+  return detail::compileToSPIRV(Source, DeviceType, DeviceArch, Is64Bit,
                                 DeviceStepping, CompileToSPIRVHandle,
                                 FreeSPIRVOutputsHandle, UserArgs);
 }
 
-template __SYCL_EXPORT std::vector<byte>
-online_compiler<source_language::opencl_c>::compile_impl(
-    detail::string_view Src, detail::string_view DeviceStepping,
-    const std::vector<detail::string_view> &Options);
+template <>
+template <>
+__SYCL_EXPORT std::vector<byte> online_compiler<source_language::cm>::compile(
+    const std::string &Source, const std::vector<std::string> &UserArgs) {
 
-template __SYCL_EXPORT std::vector<byte>
-online_compiler<source_language::cm>::compile_impl(
-    detail::string_view Src, detail::string_view DeviceStepping,
-    const std::vector<detail::string_view> &Options);
+  if (OutputFormatVersion != std::pair<int, int>{0, 0}) {
+    std::string Version = std::to_string(OutputFormatVersion.first) + ", " +
+                          std::to_string(OutputFormatVersion.second);
+    throw online_compile_error(std::string("The output format version (") +
+                               Version + ") is not supported yet");
+  }
+
+  std::vector<std::string> CMUserArgs = UserArgs;
+  CMUserArgs.push_back("-cmc");
+  return detail::compileToSPIRV(Source, DeviceType, DeviceArch, Is64Bit,
+                                DeviceStepping, CompileToSPIRVHandle,
+                                FreeSPIRVOutputsHandle, CMUserArgs);
+}
 } // namespace ext::intel::experimental
 
 namespace ext {

sycl/test/abi/sycl_symbols_linux.dump

@@ -2985,9 +2985,7 @@ _ZN4sycl3_V121__isgreaterequal_implEdd
 _ZN4sycl3_V121__isgreaterequal_implEff
 _ZN4sycl3_V122accelerator_selector_vERKNS0_6deviceE
 _ZN4sycl3_V128verifyUSMAllocatorPropertiesERKNS0_13property_listE
-_ZN4sycl3_V13ext5intel12experimental15online_compilerILNS3_15source_languageE0EE12compile_implENS0_6detail11string_viewES8_RKSt6vectorIS8_SaIS8_EE
 _ZN4sycl3_V13ext5intel12experimental15online_compilerILNS3_15source_languageE0EE7compileIJSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISE_EEEEES8_IhSaIhEERKSE_DpRKT_
-_ZN4sycl3_V13ext5intel12experimental15online_compilerILNS3_15source_languageE1EE12compile_implENS0_6detail11string_viewES8_RKSt6vectorIS8_SaIS8_EE
 _ZN4sycl3_V13ext5intel12experimental15online_compilerILNS3_15source_languageE1EE7compileIJSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaISE_EEEEES8_IhSaIhEERKSE_DpRKT_
 _ZN4sycl3_V13ext5intel12experimental9pipe_base13get_pipe_nameB5cxx11EPKv
 _ZN4sycl3_V13ext5intel12experimental9pipe_base17wait_non_blockingERKNS0_5eventE

sycl/test/abi/sycl_symbols_windows.dump

@@ -3743,8 +3743,6 @@
 ?category@exception@_V1@sycl@@QEBAAEBVerror_category@std@@XZ
 ?clearArgs@handler@_V1@sycl@@AEAAXXZ
 ?code@exception@_V1@sycl@@QEBAAEBVerror_code@std@@XZ
-?compile_impl@?$online_compiler@$00@experimental@intel@ext@_V1@sycl@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@Vstring_view@detail@56@0AEBV?$vector@Vstring_view@detail@_V1@sycl@@V?$allocator@Vstring_view@detail@_V1@sycl@@@std@@@8@@Z
-?compile_impl@?$online_compiler@$0A@@experimental@intel@ext@_V1@sycl@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@Vstring_view@detail@56@0AEBV?$vector@Vstring_view@detail@_V1@sycl@@V?$allocator@Vstring_view@detail@_V1@sycl@@@std@@@8@@Z
 ?compile_impl@detail@_V1@sycl@@YA?AV?$shared_ptr@Vkernel_bundle_impl@detail@_V1@sycl@@@std@@AEBV?$kernel_bundle@$0A@@23@AEBV?$vector@Vdevice@_V1@sycl@@V?$allocator@Vdevice@_V1@sycl@@@std@@@5@AEBVproperty_list@23@@Z
 ?complete_fusion@fusion_wrapper@experimental@codeplay@ext@_V1@sycl@@QEAA?AVevent@56@AEBVproperty_list@56@@Z
 ?computeFallbackKernelBounds@handler@_V1@sycl@@AEAA?AV?$id@$01@23@_K0@Z