| 1 | // RUN: %clang_cc1 < %s -triple %itanium_abi_triple -fms-extensions -O2 -disable-llvm-passes -emit-llvm -x c++ | FileCheck %s |
| 2 | |
| 3 | // Test attribute 'optnone' on methods: |
| 4 | // -- member functions; |
| 5 | // -- static member functions. |
| 6 | |
| 7 | // Verify that all methods of struct A are associated to the same attribute set. |
| 8 | // The attribute set shall contain attributes 'noinline' and 'optnone'. |
| 9 | |
| 10 | struct A { |
| 11 | // Definition of an optnone static method. |
| 12 | __attribute__((optnone)) |
| 13 | static int static_optnone_method(int a) { |
| 14 | return a + a; |
| 15 | } |
| 16 | // CHECK: @_ZN1A21static_optnone_methodEi({{.*}}) [[OPTNONE:#[0-9]+]] |
| 17 | |
| 18 | // Definition of an optnone normal method. |
| 19 | __attribute__((optnone)) |
| 20 | int optnone_method(int a) { |
| 21 | return a + a + a + a; |
| 22 | } |
| 23 | // CHECK: @_ZN1A14optnone_methodEi({{.*}}) [[OPTNONE]] |
| 24 | |
| 25 | // Declaration of an optnone method with out-of-line definition |
| 26 | // that doesn't say optnone. |
| 27 | __attribute__((optnone)) |
| 28 | int optnone_decl_method(int a); |
| 29 | |
| 30 | // Methods declared without attribute optnone; the definitions will |
| 31 | // have attribute optnone, and we verify optnone wins. |
| 32 | __forceinline static int static_forceinline_method(int a); |
| 33 | __attribute__((always_inline)) int alwaysinline_method(int a); |
| 34 | __attribute__((noinline)) int noinline_method(int a); |
| 35 | __attribute__((minsize)) int minsize_method(int a); |
| 36 | }; |
| 37 | |
| 38 | void foo() { |
| 39 | A a; |
| 40 | A::static_optnone_method(4); |
| 41 | a.optnone_method(14); |
| 42 | a.optnone_decl_method(12); |
| 43 | A::static_forceinline_method(5); |
| 44 | a.alwaysinline_method(5); |
| 45 | a.noinline_method(6); |
| 46 | a.minsize_method(7); |
| 47 | } |
| 48 | |
| 49 | // No attribute here, should still be on the definition. |
| 50 | int A::optnone_decl_method(int a) { |
| 51 | return a; |
| 52 | } |
| 53 | // CHECK: @_ZN1A19optnone_decl_methodEi({{.*}}) [[OPTNONE]] |
| 54 | |
| 55 | // optnone implies noinline; therefore attribute noinline is added to |
| 56 | // the set of function attributes. |
| 57 | // forceinline is instead translated as 'always_inline'. |
| 58 | // However 'noinline' wins over 'always_inline' and therefore |
| 59 | // the resulting attributes for this method are: noinline + optnone |
| 60 | __attribute__((optnone)) |
| 61 | int A::static_forceinline_method(int a) { |
| 62 | return a + a + a + a; |
| 63 | } |
| 64 | // CHECK: @_ZN1A25static_forceinline_methodEi({{.*}}) [[OPTNONE]] |
| 65 | |
| 66 | __attribute__((optnone)) |
| 67 | int A::alwaysinline_method(int a) { |
| 68 | return a + a + a + a; |
| 69 | } |
| 70 | // CHECK: @_ZN1A19alwaysinline_methodEi({{.*}}) [[OPTNONE]] |
| 71 | |
| 72 | // 'noinline' + 'noinline and optnone' = 'noinline and optnone' |
| 73 | __attribute__((optnone)) |
| 74 | int A::noinline_method(int a) { |
| 75 | return a + a + a + a; |
| 76 | } |
| 77 | // CHECK: @_ZN1A15noinline_methodEi({{.*}}) [[OPTNONE]] |
| 78 | |
| 79 | // 'optnone' wins over 'minsize' |
| 80 | __attribute__((optnone)) |
| 81 | int A::minsize_method(int a) { |
| 82 | return a + a + a + a; |
| 83 | } |
| 84 | // CHECK: @_ZN1A14minsize_methodEi({{.*}}) [[OPTNONE]] |
| 85 | |
| 86 | |
| 87 | // Test attribute 'optnone' on methods: |
| 88 | // -- pure virtual functions |
| 89 | // -- base virtual and derived virtual |
| 90 | // -- base virtual but not derived virtual |
| 91 | // -- optnone methods redefined in override |
| 92 | |
| 93 | // A method defined in override doesn't inherit the function attributes of the |
| 94 | // superclass method. |
| 95 | |
| 96 | struct B { |
| 97 | virtual int pure_virtual(int a) = 0; |
| 98 | __attribute__((optnone)) |
| 99 | virtual int pure_virtual_with_optnone(int a) = 0; |
| 100 | |
| 101 | virtual int base(int a) { |
| 102 | return a + a + a + a; |
| 103 | } |
| 104 | |
| 105 | __attribute__((optnone)) |
| 106 | virtual int optnone_base(int a) { |
| 107 | return a + a + a + a; |
| 108 | } |
| 109 | |
| 110 | __attribute__((optnone)) |
| 111 | virtual int only_base_virtual(int a) { |
| 112 | return a + a; |
| 113 | } |
| 114 | }; |
| 115 | |
| 116 | struct C : public B { |
| 117 | __attribute__((optnone)) |
| 118 | virtual int pure_virtual(int a) { |
| 119 | return a + a + a + a; |
| 120 | } |
| 121 | |
| 122 | virtual int pure_virtual_with_optnone(int a) { |
| 123 | return a + a + a + a; |
| 124 | } |
| 125 | |
| 126 | __attribute__((optnone)) |
| 127 | virtual int base(int a) { |
| 128 | return a + a; |
| 129 | } |
| 130 | |
| 131 | virtual int optnone_base(int a) { |
| 132 | return a + a; |
| 133 | } |
| 134 | |
| 135 | int only_base_virtual(int a) { |
| 136 | return a + a + a + a; |
| 137 | } |
| 138 | }; |
| 139 | |
| 140 | int bar() { |
| 141 | C c; |
| 142 | int result; |
| 143 | result = c.pure_virtual(3); |
| 144 | result += c.pure_virtual_with_optnone(2); |
| 145 | result += c.base(5); |
| 146 | result += c.optnone_base(7); |
| 147 | result += c.only_base_virtual(9); |
| 148 | return result; |
| 149 | } |
| 150 | |
| 151 | // CHECK: @_ZN1C12pure_virtualEi({{.*}}) {{.*}} [[OPTNONE]] |
| 152 | // CHECK: @_ZN1C25pure_virtual_with_optnoneEi({{.*}}) {{.*}} [[NORMAL:#[0-9]+]] |
| 153 | // CHECK: @_ZN1C4baseEi({{.*}}) {{.*}} [[OPTNONE]] |
| 154 | // CHECK: @_ZN1C12optnone_baseEi({{.*}}) {{.*}} [[NORMAL]] |
| 155 | // CHECK: @_ZN1C17only_base_virtualEi({{.*}}) {{.*}} [[NORMAL]] |
| 156 | // CHECK: @_ZN1B4baseEi({{.*}}) {{.*}} [[NORMAL]] |
| 157 | // CHECK: @_ZN1B12optnone_baseEi({{.*}}) {{.*}} [[OPTNONE]] |
| 158 | // CHECK: @_ZN1B17only_base_virtualEi({{.*}}) {{.*}} [[OPTNONE]] |
| 159 | |
| 160 | |
| 161 | // CHECK: attributes [[NORMAL]] = |
| 162 | // CHECK-NOT: noinline |
| 163 | // CHECK-NOT: optnone |
| 164 | // CHECK: attributes [[OPTNONE]] = {{.*}} noinline {{.*}} optnone |
| 165 | |