llvm-project/clang/test/CodeGenCUDA/constexpr-variables.cu

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// RUN: %clang_cc1 -std=c++14 %s -emit-llvm -o - -triple nvptx \
// RUN: -fcuda-is-device | FileCheck --check-prefixes=CXX14 %s
// RUN: %clang_cc1 -std=c++17 %s -emit-llvm -o - -triple nvptx \
// RUN: -fcuda-is-device | FileCheck --check-prefixes=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: @_ZN1Q2k2E = {{.*}}externally_initialized constant i32 6
// CXX17: @_ZN1Q2k2E = internal {{.*}}constant i32 6
// CXX14: @_ZN1Q2k1E = available_externally {{.*}}constant i32 5
// CXX17: @_ZN1Q2k1E = {{.*}} externally_initialized constant i32 5
static constexpr int k1 = 5;
static constexpr int k2 = 6;
};
constexpr int Q::k2;
__constant__ const int &use_Q_k1 = Q::k1;
__constant__ const int &use_Q_k2 = Q::k2;
template<typename T> struct X {
// CXX14: @_ZN1XIiE1aE = available_externally {{.*}}constant i32 123
// CXX17: @_ZN1XIiE1aE = {{.*}}externally_initialized constant i32 123
static constexpr int a = 123;
};
__constant__ const int &use_X_a = X<int>::a;
template <typename T, T a, T b> struct A {
// CXX14: @_ZN1AIiLi1ELi2EE1xE = available_externally {{.*}}constant i32 2
// CXX17: @_ZN1AIiLi1ELi2EE1xE = {{.*}}externally_initialized constant i32 2
constexpr static T x = a * b;
};
__constant__ const int &y = A<int, 1, 2>::x;