1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify %s -Wnonnull
2
3 void __attribute__((cpu_specific(ivybridge))) no_default(void);
4 void __attribute__((cpu_specific(sandybridge))) no_default(void);
5
use1(void)6 void use1(void){
7 // Should be OK, default not a problem.
8 no_default();
9 }
10
11 int __attribute__((cpu_specific(atom))) addr_of(void);
12 int __attribute__((cpu_specific(ivybridge))) addr_of(void);
13 int __attribute__((cpu_specific(ivybridge))) addr_of2(void);
14
use2(void)15 void use2(void){
16 addr_of();
17 addr_of2();
18 // expected-error@+1{{reference to multiversioned function could not be resolved; did you mean to call it with no arguments?}}
19 (void)+addr_of;
20 // expected-error@+1{{reference to multiversioned function could not be resolved; did you mean to call it with no arguments?}}
21 (void)+addr_of2;
22 // expected-error@+1{{reference to multiversioned function could not be resolved; did you mean to call it with no arguments?}}
23 (void)&addr_of;
24 // expected-error@+1{{reference to multiversioned function could not be resolved; did you mean to call it with no arguments?}}
25 (void)&addr_of2;
26 }
27
28 // expected-error@+1 {{multiversioned function must have a prototype}}
29 int __attribute__((cpu_specific(atom))) no_proto();
30
31 int __attribute__((cpu_specific(atom))) redecl1(void);
redecl1(void)32 int __attribute__((cpu_specific(atom))) redecl1(void) { return 1; }
33
34 int __attribute__((cpu_dispatch(atom))) redecl2(void);
redecl2(void)35 int __attribute__((cpu_dispatch(atom))) redecl2(void) { }
36 // expected-error@+2 {{redefinition of 'redecl2'}}
37 // expected-note@-2 {{previous definition is here}}
redecl2(void)38 int __attribute__((cpu_dispatch(atom))) redecl2(void) { }
39
40 int allow_fwd_decl(void);
allow_fwd_decl(void)41 int __attribute__((cpu_dispatch(atom))) allow_fwd_decl(void) {}
42
43 int allow_fwd_decl2(void);
use_fwd_decl(void)44 void use_fwd_decl(void) {
45 allow_fwd_decl2();
46 }
47 // expected-error@+1 {{function declaration cannot become a multiversioned function after first usage}}
allow_fwd_decl2(void)48 int __attribute__((cpu_dispatch(atom))) allow_fwd_decl2(void) {}
49
50
51 int __attribute__((cpu_specific(atom))) redecl4(void);
52 // expected-error@+1 {{function declaration is missing 'cpu_specific' or 'cpu_dispatch' attribute in a multiversioned function}}
53 int redecl4(void);
54
55 // expected-warning@+1 {{CPU list contains duplicate entries; attribute ignored}}
56 int __attribute__((cpu_specific(atom, atom))) dup_procs(void);
57
58 int __attribute__((cpu_specific(ivybridge, atom))) dup_procs2(void);
59 // expected-error@+2 {{multiple 'cpu_specific' functions cannot specify the same CPU: 'atom'}}
60 // expected-note@-2 {{previous declaration is here}}
61 int __attribute__((cpu_specific(atom))) dup_procs2(void);
62
63 int __attribute__((cpu_specific(ivybridge, atom))) dup_procs3(void);
64 // expected-error@+2 {{multiple 'cpu_specific' functions cannot specify the same CPU: 'ivybridge'}}
65 // expected-note@-2 {{previous declaration is here}}
66 int __attribute__((cpu_specific(atom, ivybridge))) dup_procs3(void);
67
redef(void)68 int __attribute__((cpu_specific(atom))) redef(void) { return 1; }
69 // expected-error@+2 {{redefinition of 'redef'}}
70 // expected-note@-2 {{previous definition is here}}
redef(void)71 int __attribute__((cpu_specific(atom))) redef(void) { return 2; }
72
cpu_dispatch(atom)73 int __attribute((cpu_dispatch(atom))) mult_dispatch(void) {}
74 // expected-error@+2 {{'cpu_dispatch' function redeclared with different CPUs}}
75 // expected-note@-2 {{previous declaration is here}}
cpu_dispatch(ivybridge)76 int __attribute((cpu_dispatch(ivybridge))) mult_dispatch(void) {}
77
78 // expected-error@+1 {{'cpu_dispatch' attribute takes at least 1 argument}}
cpu_dispatch()79 int __attribute((cpu_dispatch())) no_dispatch(void) {}
80 // expected-error@+1 {{'cpu_specific' attribute takes at least 1 argument}}
cpu_specific()81 int __attribute((cpu_specific())) no_specific(void) {}
82
83 //expected-error@+1 {{attribute 'cpu_specific' multiversioning cannot be combined with attribute 'used'}}
84 void __attribute__((used,cpu_specific(sandybridge))) addtl_attrs(void);
85
86 void __attribute__((target("default"))) addtl_attrs2(void);
87 // expected-error@+2 {{multiversioning attributes cannot be combined}}
88 // expected-note@-2 {{previous declaration is here}}
89 void __attribute__((cpu_specific(sandybridge))) addtl_attrs2(void);
90
91 // expected-error@+2 {{multiversioning attributes cannot be combined}}
92 void __attribute((cpu_specific(sandybridge), cpu_dispatch(atom, sandybridge)))
93 combine_attrs(void);
94
diff_cc(void)95 int __attribute__((cpu_dispatch(ivybridge))) diff_cc(void){}
96 // expected-error@+1 {{multiversioned function declaration has a different calling convention}}
97 __vectorcall int __attribute__((cpu_specific(sandybridge))) diff_cc(void);
98
99 // expected-warning@+2 {{body of cpu_dispatch function will be ignored}}
disp_with_body(void)100 int __attribute__((cpu_dispatch(atom))) disp_with_body(void) {
101 return 5;
102 }
103
104 // expected-error@+1 {{invalid option 'INVALID'}}
called_invalid_value(void)105 int __attribute__((cpu_specific(INVALID))) called_invalid_value(void){ return 1;}
106 // expected-warning@+3 {{attribute declaration must precede definition}}
107 // expected-note@-2 2 {{previous definition is here}}
108 // expected-error@+1 {{redefinition of}}
called_invalid_value(void)109 int __attribute__((cpu_specific(pentium_iii))) called_invalid_value(void){ return 2;}
called_invalid_value(void)110 int __attribute__((cpu_specific(pentium_4))) called_invalid_value(void){ return 3;}
111
use3(void)112 int use3(void) {
113 return called_invalid_value();
114 }
115
116 // expected-warning@+1 {{CPU list contains duplicate entries; attribute ignored}}
117 int __attribute__((cpu_dispatch(pentium_iii, pentium_iii_no_xmm_regs))) dupe_p3(void);
118
119 void __attribute__((cpu_specific(atom), nothrow, nonnull(1))) addtl_attrs(int*);
120