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[clang] [CUDA] Support calling consteval function between different target. #158688

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Merged
merged 2 commits into from
Sep 17, 2025
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[clang] [CUDA] Support calling consteval function between different target. #158688

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[clang] [CUDA] Support calling consteval function between different t…
tangjj11 Sep 15, 2025
ca76a1f
Add release note.
tangjj11 Sep 16, 2025
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2 changes: 2 additions & 0 deletions clang/docs/ReleaseNotes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -225,6 +225,8 @@ CUDA/HIP Language Changes
CUDA Support
^^^^^^^^^^^^

Support calling `consteval` function between different target.

AIX Support
^^^^^^^^^^^

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3 changes: 3 additions & 0 deletions clang/lib/Sema/SemaCUDA.cpp
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Expand Up @@ -143,6 +143,9 @@ CUDAFunctionTarget SemaCUDA::IdentifyTarget(const FunctionDecl *D,
if (D->hasAttr<CUDAGlobalAttr>())
return CUDAFunctionTarget::Global;

if (D->isConsteval())
return CUDAFunctionTarget::HostDevice;

if (hasAttr<CUDADeviceAttr>(D, IgnoreImplicitHDAttr)) {
if (hasAttr<CUDAHostAttr>(D, IgnoreImplicitHDAttr))
return CUDAFunctionTarget::HostDevice;
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8 changes: 8 additions & 0 deletions clang/test/SemaCUDA/consteval-func.cu
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@@ -0,0 +1,8 @@
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s

// expected-no-diagnostics

#include "Inputs/cuda.h"

__device__ consteval int f() { return 0; }
int main() { return f(); }