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1 // RUN: %clang_cc1 -std=c++14 -triple amdgcn-amd-amdhsa \
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2 // RUN: -fcuda-is-device -emit-llvm -o - -x hip %s | FileCheck %s
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3 // RUN: %clang_cc1 -std=c++14 -triple amdgcn-amd-amdhsa \
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4 // RUN: -fcuda-is-device -emit-llvm -o - -x hip %s | FileCheck -check-prefix=NEG %s
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5
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6 #include "Inputs/cuda.h"
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7
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8 struct A {
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9 int x;
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10 };
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11
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12 // Check the situation of B<T> has empty ctor but B<int> has non-empty ctor.
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13 // Make sure const B<int> variables are not promoted to constant variables.
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14 template<typename T>
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15 struct B {
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16 T x;
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17 B() {}
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18 B(T _x) { x = _x; }
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19 static const B<T> y;
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20 };
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21
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22 template<>
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23 struct B<int> {
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24 int x;
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25 B() { x = 1; }
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26 static const B<int> y;
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27 };
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28
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29 template<typename T>
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30 const B<T> B<T>::y;
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31
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32 const B<int> B<int>::y;
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33
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34 template<typename T>
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35 T temp_fun(T x) {
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36 return B<T>::y.x;
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37 }
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38
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39 // Check template variable with empty default ctor but non-empty initializer
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40 // ctor is not promoted.
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41 template<typename T>
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42 const B<T> b = B<T>(-1);
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43
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44 constexpr int constexpr_var = 1;
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45 constexpr A constexpr_struct{2};
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46 constexpr A constexpr_array[4] = {0, 0, 0, 3};
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47 constexpr char constexpr_str[] = "abcd";
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48 const int const_var = 4;
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49 const A const_struct{5};
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50 const A const_array[] = {0, 0, 0, 6};
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51 const char const_str[] = "xyz";
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52
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53 // Check const variables used by host only are not emitted.
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54 const int var_host_only = 7;
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55
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56 // CHECK-DAG: @_ZL13constexpr_str.const = private unnamed_addr addrspace(4) constant [5 x i8] c"abcd\00"
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57 // CHECK-DAG: @_ZL13constexpr_var = internal addrspace(4) constant i32 1
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58 // CHECK-DAG: @_ZL16constexpr_struct = internal addrspace(4) constant %struct.A { i32 2 }
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59 // CHECK-DAG: @_ZL15constexpr_array = internal addrspace(4) constant [4 x %struct.A] [%struct.A zeroinitializer, %struct.A zeroinitializer, %struct.A zeroinitializer, %struct.A { i32 3 }]
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60 // CHECK-DAG: @_ZL9const_var = internal addrspace(4) constant i32 4
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61 // CHECK-DAG: @_ZL12const_struct = internal addrspace(4) constant %struct.A { i32 5 }
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62 // CHECK-DAG: @_ZL11const_array = internal addrspace(4) constant [4 x %struct.A] [%struct.A zeroinitializer, %struct.A zeroinitializer, %struct.A zeroinitializer, %struct.A { i32 6 }]
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63 // CHECK-DAG: @_ZL9const_str = internal addrspace(4) constant [4 x i8] c"xyz\00"
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64
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65 // NEG-NOT: @_ZN1BIiE1yE
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66 // NEG-NOT: @_Z1bIdE
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67 // NEG-NOT: @_ZL13var_host_only
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68 // NEG-NOT: {{^}}@{{.*}} = external
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69
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70 // CHECK-LABEL: define{{.*}}@_Z7dev_funPiPPKi
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71 // CHECK: store i32 1
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72 // CHECK: store i32 2
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73 // CHECK: store i32 3
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74 // CHECK: load i8, i8* getelementptr {{.*}} @_ZL13constexpr_str.const
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75 // CHECK: store i32 4
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76 // CHECK: store i32 5
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77 // CHECK: store i32 6
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78 // CHECK: load i8, i8* getelementptr {{.*}} @_ZL9const_str
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79 // CHECK: store i32* {{.*}}@_ZL13constexpr_var
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80 // CHECK: store i32* getelementptr {{.*}} @_ZL16constexpr_struct
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81 // CHECK: store i32* getelementptr {{.*}} @_ZL15constexpr_array
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82 // CHECK: store i32* {{.*}}@_ZL9const_var
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83 // CHECK: store i32* getelementptr {{.*}} @_ZL12const_struct
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84 // CHECK: store i32* getelementptr {{.*}} @_ZL11const_array
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85 __device__ void dev_fun(int *out, const int **out2) {
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86 *out = constexpr_var;
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87 *out = constexpr_struct.x;
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88 *out = constexpr_array[3].x;
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89 *out = constexpr_str[3];
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90 *out = const_var;
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91 *out = const_struct.x;
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92 *out = const_array[3].x;
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93 *out = const_str[3];
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94 *out2 = &constexpr_var;
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95 *out2 = &constexpr_struct.x;
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96 *out2 = &constexpr_array[3].x;
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97 *out2 = &const_var;
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98 *out2 = &const_struct.x;
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99 *out2 = &const_array[3].x;
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100 }
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101
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102 void fun() {
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103 temp_fun(1);
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104 (void) b<double>;
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105 (void) var_host_only;
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106 }
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