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[SYCL] Free function host compilation bugfix #19901

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Merged
merged 2 commits into from
Aug 28, 2025
Merged

[SYCL] Free function host compilation bugfix #19901

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2093f82
[SYCL] Free function host compilation bugfix (#19541)
lbushi25 Aug 1, 2025
68d2d23
[SYCL][TEST] Skip `free_function_host_compiler.cpp` when using `libcx…
aelovikov-intel Aug 5, 2025
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4 changes: 4 additions & 0 deletions clang/lib/Sema/SemaSYCL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6980,6 +6980,10 @@ void SYCLIntegrationHeader::emit(raw_ostream &O) {

for (const KernelDesc &K : KernelDescs) {
const size_t N = K.Params.size();
if (S.isFreeFunction(K.SyclKernel)) {
CurStart += N;
continue;
}
PresumedLoc PLoc = S.getASTContext().getSourceManager().getPresumedLoc(
S.getASTContext()
.getSourceManager()
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7 changes: 3 additions & 4 deletions clang/test/CodeGenSYCL/free_function_int_header_rtc_mode.cpp
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Expand Up @@ -44,10 +44,9 @@ int main(){
// CHECK-NEXT: "{{.*}}__sycl_kernel_free_function_nd_rangePiii",
// CHECK-NEXT: "{{.*}}Kernel_Function",


// CHECK: static constexpr const char* getName() { return "{{.*}}__sycl_kernel_free_function_singlePiii"; }
// CHECK: static constexpr const char* getName() { return "{{.*}}__sycl_kernel_free_function_nd_rangePiii"; }
// CHECK: static constexpr const char* getName() { return "{{.*}}Kernel_Function"; }
// CHECK: _Z34__sycl_kernel_free_function_singlePiii
// CHECK: _Z36__sycl_kernel_free_function_nd_rangePiii
// CHECK: _ZTSZ4mainE15Kernel_Function

// CHECK-RTC-NOT: free_function_single_kernel
// CHECK-RTC-NOT: free_function_nd_range
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33 changes: 33 additions & 0 deletions sycl/test/extensions/free_function_kernels/free_function_host_compiler.cpp
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@@ -0,0 +1,33 @@
// RUN: %clangxx -fsycl %s
// RUN: %clangxx -fsycl -fno-sycl-unnamed-lambda %s
// RUN: %clangxx -fsycl -fsycl-host-compiler=g++ %s
// REQUIRES: linux
// UNSUPPORTED: libcxx

// This test serves as a sanity check that compilation succeeds
// for a simple free function kernel when using the host compiler
// flag with unnamed lambda extension enabled(default) and disabled.

#include <sycl/detail/core.hpp>
#include <sycl/ext/oneapi/experimental/free_function_traits.hpp>
#include <sycl/kernel_bundle.hpp>

SYCL_EXT_ONEAPI_FUNCTION_PROPERTY(
(sycl::ext::oneapi::experimental::nd_range_kernel<1>))
void kernel() {}

int main() {
sycl::queue q;

sycl::kernel_bundle bundle =
sycl::get_kernel_bundle<sycl::bundle_state::executable>(q.get_context());
sycl::kernel_id kID =
sycl::ext::oneapi::experimental::get_kernel_id<kernel>();
sycl::kernel krn = bundle.get_kernel(kID);

q.submit([&](sycl::handler &cgh) {
sycl::nd_range<1> ndr;
cgh.parallel_for(ndr, krn);
});
return 0;
}