[SYCL] Remove querying for unsupported platforms (#15415)

As discussed in #15368 this
functionality should not be exposed to the users.

sycl/include/sycl/platform.hpp

@@ -194,11 +194,6 @@ class __SYCL_EXPORT platform : public detail::OwnerLessBase<platform> {
   /// \return a vector of all available SYCL platforms.
   static std::vector<platform> get_platforms();
 
-  /// Returns all unsupported (non-SYCL) platforms in the system.
-  ///
-  /// \return a vector of all unsupported non-SYCL platforms.
-  static std::vector<platform> get_unsupported_platforms();
-
   /// Returns the backend associated with this platform.
   ///
   /// \return the backend associated with this platform

sycl/source/detail/platform_impl.cpp

@@ -139,24 +139,6 @@ std::vector<platform> platform_impl::getAdapterPlatforms(AdapterPtr &Adapter,
   return Platforms;
 }
 
-std::vector<platform> platform_impl::get_unsupported_platforms() {
-  std::vector<platform> UnsupportedPlatforms;
-
-  std::vector<AdapterPtr> &Adapters = sycl::detail::ur::initializeUr();
-  // Ignore UR as it has to be supported.
-  for (auto &Adapter : Adapters) {
-    if (Adapter->hasBackend(backend::all)) {
-      continue; // skip UR
-    }
-    std::vector<platform> AdapterPlatforms =
-        getAdapterPlatforms(Adapter, /*Supported=*/false);
-    std::copy(AdapterPlatforms.begin(), AdapterPlatforms.end(),
-              std::back_inserter(UnsupportedPlatforms));
-  }
-
-  return UnsupportedPlatforms;
-}
-
 // This routine has the side effect of registering each platform's last device
 // id into each adapter, which is used for device counting.
 std::vector<platform> platform_impl::get_platforms() {

sycl/source/detail/platform_impl.hpp

@@ -125,11 +125,6 @@ class platform_impl {
   /// \return a vector of all available SYCL platforms.
   static std::vector<platform> get_platforms();
 
-  /// Returns all unsupported (non-SYCL) platforms in the system.
-  ///
-  /// \return a vector of all unsupported (non-SYCL) platforms.
-  static std::vector<platform> get_unsupported_platforms();
-
   // \return the Adapter associated with this platform.
   const AdapterPtr &getAdapter() const { return MAdapter; }
 

sycl/source/platform.cpp

@@ -52,10 +52,6 @@ std::vector<platform> platform::get_platforms() {
   return detail::platform_impl::get_platforms();
 }
 
-std::vector<platform> platform::get_unsupported_platforms() {
-  return detail::platform_impl::get_unsupported_platforms();
-}
-
 backend platform::get_backend() const noexcept { return impl->getBackend(); }
 
 template <typename Param>

sycl/test-e2e/Plugin/sycl-ls.cpp

@@ -1,4 +1,4 @@
-// RUN: sycl-ls --verbose | awk '{print}/Unsupported Platforms:/{exit}' | grep "Device \[" | wc -l >%t.verbose.out
+// RUN: sycl-ls --verbose | grep "Device \[" | wc -l >%t.verbose.out
 // RUN: sycl-ls | wc -l >%t.concise.out
 // RUN: diff %t.verbose.out %t.concise.out
 

sycl/test/abi/sycl_symbols_linux.dump

@@ -3545,7 +3545,6 @@ _ZN4sycl3_V17samplerC1EP11_cl_samplerRKNS0_7contextE
 _ZN4sycl3_V17samplerC2ENS0_29coordinate_normalization_modeENS0_15addressing_modeENS0_14filtering_modeERKNS0_13property_listE
 _ZN4sycl3_V17samplerC2EP11_cl_samplerRKNS0_7contextE
 _ZN4sycl3_V18platform13get_platformsEv
-_ZN4sycl3_V18platform25get_unsupported_platformsEv
 _ZN4sycl3_V18platformC1EP15_cl_platform_id
 _ZN4sycl3_V18platformC1ERKNS0_15device_selectorE
 _ZN4sycl3_V18platformC1ERKNS0_6deviceE

sycl/test/abi/sycl_symbols_windows.dump

@@ -4035,7 +4035,6 @@
 ?get_platform@context@_V1@sycl@@QEBA?AVplatform@23@XZ
 ?get_platform@device@_V1@sycl@@QEBA?AVplatform@23@XZ
 ?get_platforms@platform@_V1@sycl@@SA?AV?$vector@Vplatform@_V1@sycl@@V?$allocator@Vplatform@_V1@sycl@@@std@@@std@@XZ
-?get_unsupported_platforms@platform@_V1@sycl@@SA?AV?$vector@Vplatform@_V1@sycl@@V?$allocator@Vplatform@_V1@sycl@@@std@@@std@@XZ
 ?get_pointer_device@_V1@sycl@@YA?AVdevice@12@PEBXAEBVcontext@12@@Z
 ?get_pointer_type@_V1@sycl@@YA?AW4alloc@usm@12@PEBXAEBVcontext@12@@Z
 ?get_precision@stream@_V1@sycl@@QEBA_KXZ

sycl/tools/sycl-ls/sycl-ls.cpp

@@ -14,9 +14,7 @@
 //   verbose (enabled with --verbose).
 //
 // In verbose mode it also prints, which devices would be chosen by various SYCL
-// device selectors. If the system has unsupported platforms (for instance
-// CUDA's OpenCL) those will also be listed in verbose mode, under "Unsupported
-// Platforms".
+// device selectors.
 //
 #include <sycl/sycl.hpp>
 
@@ -124,8 +122,7 @@ std::array<int, 2> GetNumberOfSubAndSubSubDevices(const device &Device) {
 }
 
 static void printDeviceInfo(const device &Device, bool Verbose,
-                            const std::string &Prepend,
-                            bool IsUnsupported = false) {
+                            const std::string &Prepend) {
   auto DeviceVersion = Device.get_info<info::device::version>();
   auto DeviceName = Device.get_info<info::device::name>();
   auto DeviceVendor = Device.get_info<info::device::vendor>();
@@ -160,23 +157,19 @@ static void printDeviceInfo(const device &Device, bool Verbose,
                 << std::endl;
     }
 
-    // We don't expect to find info on aspects, device's sub-group size or
-    // architecture on non supported devices.
-    if (!IsUnsupported) {
-      std::cout << Prepend << "Aspects           :";
+    std::cout << Prepend << "Aspects           :";
 #define __SYCL_ASPECT(ASPECT, ID)                                              \
   if (Device.has(aspect::ASPECT))                                              \
     std::cout << " " << #ASPECT;
 #include <sycl/info/aspects.def>
-      std::cout << std::endl;
-      auto sg_sizes = Device.get_info<info::device::sub_group_sizes>();
-      std::cout << Prepend << "info::device::sub_group_sizes:";
-      for (auto size : sg_sizes)
-        std::cout << " " << size;
-      std::cout << std::endl;
-      std::cout << Prepend << "Architecture: " << getArchName(Device)
-                << std::endl;
-    }
+    std::cout << std::endl;
+    auto sg_sizes = Device.get_info<info::device::sub_group_sizes>();
+    std::cout << Prepend << "info::device::sub_group_sizes:";
+    for (auto size : sg_sizes)
+      std::cout << " " << size;
+    std::cout << std::endl;
+    std::cout << Prepend << "Architecture: " << getArchName(Device)
+              << std::endl;
   } else {
     std::cout << Prepend << ", " << DeviceName << " " << DeviceVersion << " ["
               << DeviceDriverVersion << "]" << std::endl;
@@ -208,11 +201,8 @@ static int printUsageAndExit() {
             << std::endl;
   std::cout << "\n Options:" << std::endl;
   std::cout
-      << "\t --verbose "
-      << "\t Verbosely prints all the discovered platforms. "
-      << "It also lists the device chosen by various SYCL device "
-         "selectors. If the system contains unsupported platforms, those will "
-         "also be listed in verbose mode, under \"Unsupported Platforms\"."
+      << "\t --verbose " << "\t Verbosely prints all the discovered platforms. "
+      << "It also lists the device chosen by various SYCL device selectors."
       << std::endl;
   std::cout
       << "\t --ignore-device-selectors "
@@ -327,38 +317,6 @@ static int unsetFilterEnvVarsAndFork() {
 }
 #endif
 
-// NOTE: This function can update DeviceNums.
-static void printVerbosePlatformInfo(const std::vector<platform> &Platforms,
-                                     std::map<backend, size_t> &DeviceNums,
-                                     const bool SuppressNumberPrinting,
-                                     bool IsUnsupported = false) {
-  uint32_t PlatformNum = 0;
-  if (!SuppressNumberPrinting)
-    DeviceNums.clear();
-  for (const auto &Platform : Platforms) {
-    backend Backend = Platform.get_backend();
-    ++PlatformNum;
-    auto PlatformVersion = Platform.get_info<info::platform::version>();
-    auto PlatformName = Platform.get_info<info::platform::name>();
-    auto PlatformVendor = Platform.get_info<info::platform::vendor>();
-    std::cout << "Platform [#" << PlatformNum << "]:" << std::endl;
-    std::cout << "    Version  : " << PlatformVersion << std::endl;
-    std::cout << "    Name     : " << PlatformName << std::endl;
-    std::cout << "    Vendor   : " << PlatformVendor << std::endl;
-
-    const auto &Devices = Platform.get_devices();
-    std::cout << "    Devices  : " << Devices.size() << std::endl;
-    for (const auto &Device : Devices) {
-      if (!SuppressNumberPrinting) {
-        std::cout << "        Device [#" << DeviceNums[Backend]
-                  << "]:" << std::endl;
-        ++DeviceNums[Backend];
-      }
-      printDeviceInfo(Device, true, "        ", IsUnsupported);
-    }
-  }
-}
-
 int main(int argc, char **argv) {
 
   if (argc == 1) {
@@ -428,14 +386,31 @@ int main(int argc, char **argv) {
 
     if (verbose) {
       std::cout << "\nPlatforms: " << Platforms.size() << std::endl;
-      printVerbosePlatformInfo(Platforms, DeviceNums, SuppressNumberPrinting);
-
-      const auto &UnsupportedPlatforms = platform::get_unsupported_platforms();
-      std::cout << "\nUnsupported Platforms: " << UnsupportedPlatforms.size()
-                << std::endl;
-      printVerbosePlatformInfo(UnsupportedPlatforms, DeviceNums,
-                               SuppressNumberPrinting, true);
-      std::cout << std::endl;
+      uint32_t PlatformNum = 0;
+      if (!SuppressNumberPrinting)
+        DeviceNums.clear();
+      for (const auto &Platform : Platforms) {
+        backend Backend = Platform.get_backend();
+        ++PlatformNum;
+        auto PlatformVersion = Platform.get_info<info::platform::version>();
+        auto PlatformName = Platform.get_info<info::platform::name>();
+        auto PlatformVendor = Platform.get_info<info::platform::vendor>();
+        std::cout << "Platform [#" << PlatformNum << "]:" << std::endl;
+        std::cout << "    Version  : " << PlatformVersion << std::endl;
+        std::cout << "    Name     : " << PlatformName << std::endl;
+        std::cout << "    Vendor   : " << PlatformVendor << std::endl;
+
+        const auto &Devices = Platform.get_devices();
+        std::cout << "    Devices  : " << Devices.size() << std::endl;
+        for (const auto &Device : Devices) {
+          if (!SuppressNumberPrinting) {
+            std::cout << "        Device [#" << DeviceNums[Backend]
+                      << "]:" << std::endl;
+            ++DeviceNums[Backend];
+          }
+          printDeviceInfo(Device, true, "        ");
+        }
+      }
     } else {
       return EXIT_SUCCESS;
     }