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 | |