1 | // RUN: %clang_cc1 < %s -triple i386-mingw32 -fms-extensions -emit-llvm -x c++ | FileCheck %s |
2 | |
3 | // optnone wins over inlinehint. |
4 | // Test that both func1 and func2 are marked optnone and noinline. |
5 | |
6 | // Definition with both optnone and inlinehint. |
7 | __attribute__((optnone)) |
8 | inline int func1(int a) { |
9 | return a + a + a + a; |
10 | } |
11 | // CHECK: @_Z5func1i({{.*}}) [[OPTNONE:#[0-9]+]] |
12 | |
13 | // optnone declaration, inlinehint definition. |
14 | __attribute__((optnone)) |
15 | int func2(int a); |
16 | |
17 | inline int func2(int a) { |
18 | return a + a + a + a; |
19 | } |
20 | // CHECK: @_Z5func2i({{.*}}) [[OPTNONE]] |
21 | |
22 | // Keep alive the definitions of func1 and func2. |
23 | int foo() { |
24 | int val = func1(1); |
25 | return val + func2(2); |
26 | } |
27 | |
28 | // optnone wins over minsize. |
29 | __attribute__((optnone)) |
30 | int func3(int a); |
31 | |
32 | __attribute__((minsize)) |
33 | int func3(int a) { |
34 | return a + a + a + a; |
35 | } |
36 | // Same attribute set as everything else, therefore no 'minsize'. |
37 | // CHECK: @_Z5func3i({{.*}}) [[OPTNONE]] |
38 | |
39 | |
40 | // Verify that noreturn is compatible with optnone. |
41 | __attribute__((noreturn)) |
42 | extern void exit_from_function(); |
43 | |
44 | __attribute__((noreturn)) __attribute((optnone)) |
45 | extern void noreturn_function(int a) { exit_from_function(); } |
46 | // CHECK: @_Z17noreturn_functioni({{.*}}) [[NORETURN:#[0-9]+]] |
47 | |
48 | |
49 | // Verify that __declspec(noinline) is compatible with optnone. |
50 | __declspec(noinline) __attribute__((optnone)) |
51 | void func4() { return; } |
52 | // CHECK: @_Z5func4v() [[OPTNONE]] |
53 | |
54 | __declspec(noinline) |
55 | extern void func5(); |
56 | |
57 | __attribute__((optnone)) |
58 | void func5() { return; } |
59 | // CHECK: @_Z5func5v() [[OPTNONE]] |
60 | |
61 | |
62 | // Verify also that optnone can be used on dllexport functions. |
63 | // Adding attribute optnone on a dllimport function has no effect. |
64 | |
65 | __attribute__((dllimport)) |
66 | __attribute__((optnone)) |
67 | int imported_optnone_func(int a); |
68 | |
69 | __attribute__((dllexport)) |
70 | __attribute__((optnone)) |
71 | int exported_optnone_func(int a) { |
72 | return imported_optnone_func(a); // use of imported func |
73 | } |
74 | // CHECK: @_Z21exported_optnone_funci({{.*}}) [[OPTNONE]] |
75 | // CHECK: declare dllimport {{.*}} @_Z21imported_optnone_funci({{.*}}) [[DLLIMPORT:#[0-9]+]] |
76 | |
77 | |
78 | // CHECK: attributes [[OPTNONE]] = { noinline {{.*}} optnone |
79 | // CHECK: attributes [[NORETURN]] = { noinline noreturn {{.*}} optnone |
80 | |
81 | // CHECK: attributes [[DLLIMPORT]] = |
82 | // CHECK-NOT: optnone |
83 | |