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150
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1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify %s
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2
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3 void __attribute__((target("sse4.2"))) no_default(void);
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4 void __attribute__((target("arch=sandybridge"))) no_default(void);
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5
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6 void use1(void){
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7 // expected-error@+1 {{no matching function for call to 'no_default'}}
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8 no_default();
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9 }
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10
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11 void __attribute__((target("sse4.2"))) has_def(void);
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12 void __attribute__((target("default"))) has_def(void);
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13
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14 void use2(void){
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15 // expected-error@+2 {{reference to overloaded function could not be resolved; did you mean to call it?}}
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16 // expected-note@-4 {{possible target for call}}
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17 +has_def;
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18 }
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19
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20 int __attribute__((target("sse4.2"))) no_proto();
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21 // expected-error@-1 {{multiversioned function must have a prototype}}
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22 // expected-note@+1 {{function multiversioning caused by this declaration}}
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23 int __attribute__((target("arch=sandybridge"))) no_proto();
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24
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25 // The following should all be legal, since they are just redeclarations.
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26 int __attribute__((target("sse4.2"))) redecl1(void);
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27 int __attribute__((target("sse4.2"))) redecl1(void) { return 1; }
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28 int __attribute__((target("arch=sandybridge"))) redecl1(void) { return 2; }
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29
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30 int __attribute__((target("sse4.2"))) redecl2(void) { return 1; }
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31 int __attribute__((target("sse4.2"))) redecl2(void);
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32 int __attribute__((target("arch=sandybridge"))) redecl2(void) { return 2; }
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33
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34 int __attribute__((target("sse4.2"))) redecl3(void) { return 0; }
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35 int __attribute__((target("arch=ivybridge"))) redecl3(void) { return 1; }
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36 int __attribute__((target("arch=sandybridge"))) redecl3(void);
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37 int __attribute__((target("arch=sandybridge"))) redecl3(void) { return 2; }
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38
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39 int __attribute__((target("sse4.2"))) redecl4(void) { return 1; }
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40 int __attribute__((target("arch=sandybridge"))) redecl4(void) { return 2; }
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41 int __attribute__((target("arch=sandybridge"))) redecl4(void);
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42
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43 int __attribute__((target("sse4.2"))) redef(void) { return 1; }
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44 int __attribute__((target("arch=ivybridge"))) redef(void) { return 1; }
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45 int __attribute__((target("arch=sandybridge"))) redef(void) { return 2; }
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46 // expected-error@+2 {{redefinition of 'redef'}}
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47 // expected-note@-2 {{previous definition is here}}
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48 int __attribute__((target("arch=sandybridge"))) redef(void) { return 2; }
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49
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50 int __attribute__((target("default"))) redef2(void) { return 1;}
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51 // expected-error@+2 {{redefinition of 'redef2'}}
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52 // expected-note@-2 {{previous definition is here}}
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53 int __attribute__((target("default"))) redef2(void) { return 1;}
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54
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55 int __attribute__((target("sse4.2"))) mv_after_use(void) { return 1; }
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56 int use3(void) {
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57 return mv_after_use();
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58 }
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59
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60 // expected-error@+1 {{function declaration cannot become a multiversioned function after first usage}}
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61 int __attribute__((target("arch=sandybridge"))) mv_after_use(void) { return 2; }
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62
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63 int __attribute__((target("sse4.2,arch=sandybridge"))) mangle(void) { return 1; }
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64 //expected-error@+2 {{multiversioned function redeclarations require identical target attributes}}
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65 //expected-note@-2 {{previous declaration is here}}
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66 int __attribute__((target("arch=sandybridge,sse4.2"))) mangle(void) { return 2; }
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67
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68 // allow this, since we want to treat the 1st one as fwd-decl of the sandybridge version.
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69 int prev_no_target(void);
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70 int __attribute__((target("arch=sandybridge"))) prev_no_target(void) { return 2; }
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71 int __attribute__((target("arch=ivybridge"))) prev_no_target(void) { return 2; }
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72
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73 int __attribute__((target("arch=sandybridge"))) prev_no_target2(void);
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74 int prev_no_target2(void);
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75 // expected-error@-1 {{function declaration is missing 'target' attribute in a multiversioned function}}
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76 // expected-note@+1 {{function multiversioning caused by this declaration}}
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77 int __attribute__((target("arch=ivybridge"))) prev_no_target2(void);
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78
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79 void __attribute__((target("sse4.2"))) addtl_attrs(void);
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80 //expected-error@+1 {{attribute 'target' multiversioning cannot be combined}}
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81 void __attribute__((used,target("arch=sandybridge"))) addtl_attrs(void);
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82
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83 //expected-error@+1 {{attribute 'target' multiversioning cannot be combined}}
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84 void __attribute__((target("default"), used)) addtl_attrs2(void);
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85
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86 //expected-error@+2 {{attribute 'target' multiversioning cannot be combined}}
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87 //expected-note@+2 {{function multiversioning caused by this declaration}}
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88 void __attribute__((used,target("sse4.2"))) addtl_attrs3(void);
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89 void __attribute__((target("arch=sandybridge"))) addtl_attrs3(void);
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90
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91 void __attribute__((target("sse4.2"))) addtl_attrs4(void);
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92 void __attribute__((target("arch=sandybridge"))) addtl_attrs4(void);
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93 //expected-error@+1 {{attribute 'target' multiversioning cannot be combined}}
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94 void __attribute__((used,target("arch=ivybridge"))) addtl_attrs4(void);
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95
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96 int __attribute__((target("sse4.2"))) diff_cc(void);
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97 // expected-error@+1 {{multiversioned function declaration has a different calling convention}}
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98 __vectorcall int __attribute__((target("arch=sandybridge"))) diff_cc(void);
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99
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100 int __attribute__((target("sse4.2"))) diff_ret(void);
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101 // expected-error@+1 {{multiversioned function declaration has a different return type}}
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102 short __attribute__((target("arch=sandybridge"))) diff_ret(void);
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