Index: clang/lib/CodeGen/CodeGenModule.cpp
===================================================================
--- clang/lib/CodeGen/CodeGenModule.cpp
+++ clang/lib/CodeGen/CodeGenModule.cpp
@@ -2549,12 +2549,16 @@
   // If this is CUDA, be selective about which declarations we emit.
   if (LangOpts.CUDA) {
     if (LangOpts.CUDAIsDevice) {
+      bool IsConstexprVar = false;
+      if (auto *VD = dyn_cast<VarDecl>(Global))
+        IsConstexprVar = VD->isConstexpr();
       if (!Global->hasAttr<CUDADeviceAttr>() &&
           !Global->hasAttr<CUDAGlobalAttr>() &&
           !Global->hasAttr<CUDAConstantAttr>() &&
           !Global->hasAttr<CUDASharedAttr>() &&
           !Global->getType()->isCUDADeviceBuiltinSurfaceType() &&
-          !Global->getType()->isCUDADeviceBuiltinTextureType())
+          !Global->getType()->isCUDADeviceBuiltinTextureType() &&
+          !IsConstexprVar)
         return;
     } else {
       // We need to emit host-side 'shadows' for all global
Index: clang/test/CodeGenCUDA/constexpr-variables.cu
===================================================================
--- /dev/null
+++ clang/test/CodeGenCUDA/constexpr-variables.cu
@@ -0,0 +1,30 @@
+// RUN: %clang_cc1 -std=c++14 %s -emit-llvm -o - -triple nvptx \
+// RUN:   -fcuda-is-device | FileCheck --check-prefixes=COM,CXX14 %s
+// RUN: %clang_cc1 -std=c++17 %s -emit-llvm -o - -triple nvptx \
+// RUN:   -fcuda-is-device | FileCheck --check-prefixes=COM,CXX17 %s
+
+#include "Inputs/cuda.h"
+
+// COM: @_ZL1a = internal {{.*}}constant i32 7
+constexpr int a = 7;
+__constant__ const int &use_a = a;
+
+namespace B {
+ // COM: @_ZN1BL1bE = internal {{.*}}constant i32 9
+  constexpr int b = 9;
+}
+__constant__ const int &use_B_b = B::b;
+
+struct Q {
+  // CXX14: @_ZN1Q1kE = available_externally {{.*}}constant i32 5
+  // CXX17: @_ZN1Q1kE = linkonce_odr {{.*}}constant i32 5
+  static constexpr int k = 5;
+};
+__constant__ const int &use_Q_k = Q::k;
+
+template<typename T> struct X {
+  // CXX14: @_ZN1XIiE1aE = available_externally {{.*}}constant i32 123
+  // CXX17: @_ZN1XIiE1aE = linkonce_odr {{.*}}constant i32 123
+  static constexpr int a = 123;
+};
+__constant__ const int &use_X_a = X<int>::a;