1 | // RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -O2 < %s | FileCheck -allow-deprecated-dag-overlap %s |
2 | // RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -Os < %s | FileCheck -allow-deprecated-dag-overlap %s |
3 | // RUN: %clang_cc1 -I %S/Inputs -x c++ -std=c++11 -triple x86_64-unknown-linux -emit-llvm -Oz < %s | FileCheck -allow-deprecated-dag-overlap %s |
4 | |
5 | #pragma clang optimize off |
6 | |
7 | // This is a macro definition and therefore its text is not present after |
8 | // preprocessing. The pragma has no effect here. |
9 | #define CREATE_FUNC(name) \ |
10 | int name (int param) { \ |
11 | return param; \ |
12 | } \ |
13 | |
14 | // This is a declaration and therefore it is not decorated with `optnone`. |
15 | extern int foo(int a, int b); |
16 | // CHECK-DAG: @_Z3fooii{{.*}} [[ATTRFOO:#[0-9]+]] |
17 | |
18 | // This is a definition and therefore it will be decorated with `optnone`. |
19 | int bar(int x, int y) { |
20 | for(int i = 0; i < x; ++i) |
21 | y += x; |
22 | return y + foo(x, y); |
23 | } |
24 | // CHECK-DAG: @_Z3barii{{.*}} [[ATTRBAR:#[0-9]+]] |
25 | |
26 | // The function "int created (int param)" created by the macro invocation |
27 | // is also decorated with the `optnone` attribute because it is within a |
28 | // region of code affected by the functionality (not because of the position |
29 | // of the macro definition). |
30 | CREATE_FUNC (created) |
31 | // CHECK-DAG: @_Z7createdi{{.*}} [[ATTRCREATED:#[0-9]+]] |
32 | |
33 | class MyClass { |
34 | public: |
35 | // The declaration of the method is not decorated with `optnone`. |
36 | int method(int blah); |
37 | }; |
38 | |
39 | // The definition of the method instead is decorated with `optnone`. |
40 | int MyClass::method(int blah) { |
41 | return blah + 1; |
42 | } |
43 | // CHECK-DAG: @_ZN7MyClass6methodEi{{.*}} [[ATTRMETHOD:#[0-9]+]] |
44 | |
45 | // A template declaration will not be decorated with `optnone`. |
46 | template <typename T> T twice (T param); |
47 | |
48 | // The template definition will be decorated with the attribute `optnone`. |
49 | template <typename T> T thrice (T param) { |
50 | return 3 * param; |
51 | } |
52 | |
53 | // This function definition will not be decorated with `optnone` because the |
54 | // attribute would conflict with `always_inline`. |
55 | int __attribute__((always_inline)) baz(int z) { |
56 | return foo(z, 2); |
57 | } |
58 | // CHECK-DAG: @_Z3bazi{{.*}} [[ATTRBAZ:#[0-9]+]] |
59 | |
60 | // This function definition will not be decorated with `optnone` because the |
61 | // attribute would conflict with `minsize`. |
62 | int __attribute__((minsize)) bax(int z) { |
63 | return foo(z, 2); |
64 | } |
65 | // CHECK-DAG: @_Z3baxi{{.*}} [[ATTRBAX:#[0-9]+]] |
66 | |
67 | #pragma clang optimize on |
68 | |
69 | // The function "int wombat(int param)" created by the macro is not |
70 | // decorated with `optnone`, because the pragma applies its effects only |
71 | // after preprocessing. The position of the macro definition is not |
72 | // relevant. |
73 | CREATE_FUNC (wombat) |
74 | // CHECK-DAG: @_Z6wombati{{.*}} [[ATTRWOMBAT:#[0-9]+]] |
75 | |
76 | // This instantiation of the "twice" template function with a "float" type |
77 | // will not have an `optnone` attribute because the template declaration was |
78 | // not affected by the pragma. |
79 | float container (float par) { |
80 | return twice(par); |
81 | } |
82 | // CHECK-DAG: @_Z9containerf{{.*}} [[ATTRCONTAINER:#[0-9]+]] |
83 | // CHECK-DAG: @_Z5twiceIfET_S0_{{.*}} [[ATTRTWICE:#[0-9]+]] |
84 | |
85 | // This instantiation of the "thrice" template function with a "float" type |
86 | // will have an `optnone` attribute because the template definition was |
87 | // affected by the pragma. |
88 | float container2 (float par) { |
89 | return thrice(par); |
90 | } |
91 | // CHECK-DAG: @_Z10container2f{{.*}} [[ATTRCONTAINER2:#[0-9]+]] |
92 | // CHECK-DAG: @_Z6thriceIfET_S0_{{.*}} [[ATTRTHRICEFLOAT:#[0-9]+]] |
93 | |
94 | |
95 | // A template specialization is a new definition and it will not be |
96 | // decorated with an `optnone` attribute because it is now outside of the |
97 | // affected region. |
98 | template<> int thrice(int par) { |
99 | return (par << 1) + par; |
100 | } |
101 | int container3 (int par) { |
102 | return thrice(par); |
103 | } |
104 | // CHECK-DAG: @_Z10container3i{{.*}} [[ATTRCONTAINER3:#[0-9]+]] |
105 | // CHECK-DAG: @_Z6thriceIiET_S0_{{.*}} [[ATTRTHRICEINT:#[0-9]+]] |
106 | |
107 | |
108 | // Test that we can re-open and re-close an "off" region after the first one, |
109 | // and that this works as expected. |
110 | |
111 | #pragma clang optimize off |
112 | |
113 | int another_optnone(int x) { |
114 | return x << 1; |
115 | } |
116 | // CHECK-DAG: @_Z15another_optnonei{{.*}} [[ATTRANOTHEROPTNONE:#[0-9]+]] |
117 | |
118 | #pragma clang optimize on |
119 | |
120 | int another_normal(int x) { |
121 | return x << 2; |
122 | } |
123 | // CHECK-DAG: @_Z14another_normali{{.*}} [[ATTRANOTHERNORMAL:#[0-9]+]] |
124 | |
125 | |
126 | // Test that we can re-open an "off" region by including a header with the |
127 | // pragma and that this works as expected (i.e. the off region "falls through" |
128 | // the end of the header into this file). |
129 | |
130 | #include <header-with-pragma-optimize-off.h> |
131 | |
132 | int yet_another_optnone(int x) { |
133 | return x << 3; |
134 | } |
135 | // CHECK-DAG: @_Z19yet_another_optnonei{{.*}} [[ATTRYETANOTHEROPTNONE:#[0-9]+]] |
136 | |
137 | #pragma clang optimize on |
138 | |
139 | int yet_another_normal(int x) { |
140 | return x << 4; |
141 | } |
142 | // CHECK-DAG: @_Z18yet_another_normali{{.*}} [[ATTRYETANOTHERNORMAL:#[0-9]+]] |
143 | |
144 | |
145 | // Check for both noinline and optnone on each function that should have them. |
146 | // CHECK-DAG: attributes [[ATTRBAR]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
147 | // CHECK-DAG: attributes [[ATTRCREATED]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
148 | // CHECK-DAG: attributes [[ATTRMETHOD]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
149 | // CHECK-DAG: attributes [[ATTRTHRICEFLOAT]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
150 | // CHECK-DAG: attributes [[ATTRANOTHEROPTNONE]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
151 | // CHECK-DAG: attributes [[ATTRYETANOTHEROPTNONE]] = { {{.*}}noinline{{.*}}optnone{{.*}} } |
152 | |
153 | // Check that the other functions do NOT have optnone. |
154 | // CHECK-NOT: attributes [[ATTRFOO]] = { {{.*}}optnone{{.*}} } |
155 | // CHECK-NOT: attributes [[ATTRBAZ]] = { {{.*}}optnone{{.*}} } |
156 | // CHECK-NOT: attributes [[ATTRBAX]] = { {{.*}}optnone{{.*}} } |
157 | // CHECK-NOT: attributes [[ATTRWOMBAT]] = { {{.*}}optnone{{.*}} } |
158 | // CHECK-NOT: attributes [[ATTRCONTAINER]] = { {{.*}}optnone{{.*}} } |
159 | // CHECK-NOT: attributes [[ATTRTWICE]] = { {{.*}}optnone{{.*}} } |
160 | // CHECK-NOT: attributes [[ATTRCONTAINER2]] = { {{.*}}optnone{{.*}} } |
161 | // CHECK-NOT: attributes [[ATTRCONTAINER3]] = { {{.*}}optnone{{.*}} } |
162 | // CHECK-NOT: attributes [[ATTRTHRICEINT]] = { {{.*}}optnone{{.*}} } |
163 | // CHECK-NOT: attributes [[ATTRANOTHERNORMAL]] = { {{.*}}optnone{{.*}} } |
164 | // CHECK-NOT: attributes [[ATTRYETANOTHERNORMAL]] = { {{.*}}optnone{{.*}} } |
165 | |