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[SYCL] Don't return empty platforms #7923

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Merged
merged 3 commits into from
Jan 12, 2023
Merged

[SYCL] Don't return empty platforms #7923

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644ba6c
empty platforms shouldn't be gathered
cperkinsintel Jan 5, 2023
1b470ee
i forgot to clang-format, and now I must pay
cperkinsintel Jan 5, 2023
e52d338
reviewer feedback. add comment with spec citation
cperkinsintel Jan 5, 2023
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9 changes: 5 additions & 4 deletions sycl/source/detail/platform_impl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -126,10 +126,11 @@ std::vector<platform> platform_impl::get_platforms() {
// insert PiPlatform into the Plugin
Plugin.getPlatformId(PiPlatform);
}
// The users of (deprecated) SYCL_DEVICE_ALLOWLIST expect that
// platforms with no devices will not be reported.
if (!SYCLConfig<SYCL_DEVICE_ALLOWLIST>::get() ||
!Platform.get_devices(info::device_type::all).empty()) {

// The SYCL spec says that a platform has one or more devices. ( SYCL
// 2020 4.6.2 ) If we have an empty platform, we don't report it back
// from platform::get_platforms().
if (!Platform.get_devices(info::device_type::all).empty()) {
Platforms.push_back(Platform);
}
}
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