[clang] [CUDA][HIP] Fix template static member (PR #98580)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Yaxun (Sam) Liu (yxsamliu)

<details>
<summary>Changes</summary>

Should check host/device attributes before emitting static member of template instantiation.

Fixes: https://github.com/llvm/llvm-project/issues/98151

---
Full diff: https://github.com/llvm/llvm-project/pull/98580.diff


2 Files Affected:

- (modified) clang/lib/CodeGen/CodeGenModule.cpp (+2-1) 
- (added) clang/test/CodeGenCUDA/template-class-static-member.cu (+50) 


``````````diff
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 6c10b4a2edef8..599e20634bf72 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -5935,7 +5935,8 @@ static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
 
 void CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
   auto DK = VD->isThisDeclarationADefinition();
-  if (DK == VarDecl::Definition && VD->hasAttr<DLLImportAttr>())
+  if ((DK == VarDecl::Definition && VD->hasAttr<DLLImportAttr>()) ||
+      (LangOpts.CUDA && !shouldEmitCUDAGlobalVar(VD)))
     return;
 
   TemplateSpecializationKind TSK = VD->getTemplateSpecializationKind();
diff --git a/clang/test/CodeGenCUDA/template-class-static-member.cu b/clang/test/CodeGenCUDA/template-class-static-member.cu
new file mode 100644
index 0000000000000..d790d2dea66ba
--- /dev/null
+++ b/clang/test/CodeGenCUDA/template-class-static-member.cu
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device \
+// RUN:   -emit-llvm -o - -x hip %s | FileCheck -check-prefix=DEV %s
+
+// RUN: %clang_cc1 -triple x86_64-gnu-linux -std=c++11 \
+// RUN:   -emit-llvm -o - -x hip %s | FileCheck -check-prefix=HOST %s
+
+// Negative tests.
+
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device \
+// RUN:   -emit-llvm -o - -x hip %s | FileCheck -check-prefix=DEV-NEG %s
+
+#include "Inputs/cuda.h"
+
+template <class T>
+class A {
+    static int h_member;
+    __device__ static int d_member;
+    __constant__ static int c_member;
+    __managed__ static int m_member;
+    const static int const_member = 0;
+};
+
+template <class T>
+int A<T>::h_member;
+
+template <class T>
+__device__ int A<T>::d_member;
+
+template <class T>
+__constant__ int A<T>::c_member;
+
+template <class T>
+__managed__ int A<T>::m_member;
+
+template <class T>
+const int A<T>::const_member;
+
+template class A<int>;
+
+//DEV-DAG: @_ZN1AIiE8d_memberE = internal addrspace(1) global i32 0, comdat, align 4
+//DEV-DAG: @_ZN1AIiE8c_memberE = internal addrspace(4) global i32 0, comdat, align 4
+//DEV-DAG: @_ZN1AIiE8m_memberE = internal addrspace(1) externally_initialized global ptr addrspace(1) null
+//DEV-DAG: @_ZN1AIiE12const_memberE = internal addrspace(4) constant i32 0, comdat, align 4
+//DEV-NEG-NOT: @_ZN1AIiE8h_memberE
+
+//HOST-DAG: @_ZN1AIiE8h_memberE = weak_odr global i32 0, comdat, align 4
+//HOST-DAG: @_ZN1AIiE8d_memberE = internal global i32 undef, comdat, align 4
+//HOST-DAG: @_ZN1AIiE8c_memberE = internal global i32 undef, comdat, align 4
+//HOST-DAG: @_ZN1AIiE8m_memberE = internal externally_initialized global ptr null
+//HOST-DAG: @_ZN1AIiE12const_memberE = weak_odr constant i32 0, comdat, align 4

``````````

</details>


https://github.com/llvm/llvm-project/pull/98580