1 // RUN: %clang_cc1 -std=c++11 -verify %s
2 
3 // Note that this puts the expected lines before the directives to work around
4 // limitations in the -verify mode.
5 
6 template <int V, int I>
7 void test_nontype_template_param(int *List, int Length) {
8 #pragma clang loop vectorize_width(V) interleave_count(I)
9   for (int i = 0; i < Length; i++) {
10     List[i] = i;
11   }
12 
13 #pragma clang loop vectorize_width(V + 4) interleave_count(I + 4)
14   for (int i = 0; i < Length; i++) {
15     List[i] = i;
16   }
17 }
18 
19 template <int V>
20 void test_nontype_template_vectorize(int *List, int Length) {
21   /* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop vectorize_width(V)
22   for (int i = 0; i < Length; i++) {
23     List[i] = i;
24   }
25 
26   /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop vectorize_width(V / 2)
27   for (int i = 0; i < Length; i++) {
28     List[i] += i;
29   }
30 }
31 
32 template <int I>
33 void test_nontype_template_interleave(int *List, int Length) {
34   /* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop interleave_count(I)
35   for (int i = 0; i < Length; i++) {
36     List[i] = i;
37   }
38 
39   /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(2 % I)
40   for (int i = 0; i < Length; i++) {
41     List[i] = i;
42   }
43 }
44 
45 template <char V>
46 void test_nontype_template_char(int *List, int Length) {
47   /* expected-error {{invalid argument of type 'char'; expected an integer type}} */ #pragma clang loop vectorize_width(V)
48   for (int i = 0; i < Length; i++) {
49     List[i] = i;
50   }
51 }
52 
53 template <bool V>
54 void test_nontype_template_bool(int *List, int Length) {
55   /* expected-error {{invalid argument of type 'bool'; expected an integer type}} */ #pragma clang loop vectorize_width(V)
56   for (int i = 0; i < Length; i++) {
57     List[i] = i;
58   }
59 }
60 
61 template <int V, int I>
62 void test_nontype_template_badarg(int *List, int Length) {
63   /* expected-error {{use of undeclared identifier 'Vec'}} */ #pragma clang loop vectorize_width(Vec) interleave_count(I)
64   /* expected-error {{use of undeclared identifier 'Int'}} */ #pragma clang loop vectorize_width(V) interleave_count(Int)
65   for (int i = 0; i < Length; i++) {
66     List[i] = i;
67   }
68 }
69 
70 template <typename T>
71 void test_type_template_vectorize(int *List, int Length) {
72   const T Value = -1;
73   /* expected-error {{invalid value '-1'; must be positive}} */ #pragma clang loop vectorize_width(Value)
74   for (int i = 0; i < Length; i++) {
75     List[i] = i;
76   }
77 }
78 
79 void test(int *List, int Length) {
80   int i = 0;
81 
82 #pragma clang loop vectorize(enable)
83 #pragma clang loop interleave(enable)
84 #pragma clang loop vectorize_predicate(enable)
85 #pragma clang loop unroll(full)
86   while (i + 1 < Length) {
87     List[i] = i;
88   }
89 
90 #pragma clang loop vectorize_width(4)
91 #pragma clang loop interleave_count(8)
92 #pragma clang loop unroll_count(16)
93   while (i < Length) {
94     List[i] = i;
95   }
96 
97 #pragma clang loop vectorize(disable)
98 #pragma clang loop interleave(disable)
99 #pragma clang loop vectorize_predicate(disable)
100 #pragma clang loop unroll(disable)
101   while (i - 1 < Length) {
102     List[i] = i;
103   }
104 
105 #pragma clang loop vectorize_width(4) interleave_count(8) unroll_count(16)
106   while (i - 2 < Length) {
107     List[i] = i;
108   }
109 
110 #pragma clang loop interleave_count(16)
111   while (i - 3 < Length) {
112     List[i] = i;
113   }
114 
115   int VList[Length];
116 #pragma clang loop vectorize(disable) interleave(disable) unroll(disable) vectorize_predicate(disable)
117   for (int j : VList) {
118     VList[j] = List[j];
119   }
120 
121 #pragma clang loop distribute(enable)
122   for (int j : VList) {
123     VList[j] = List[j];
124   }
125 
126 #pragma clang loop distribute(disable)
127   for (int j : VList) {
128     VList[j] = List[j];
129   }
130 
131   test_nontype_template_param<4, 8>(List, Length);
132 
133 /* expected-error {{expected '('}} */ #pragma clang loop vectorize
134 /* expected-error {{expected '('}} */ #pragma clang loop interleave
135 /* expected-error {{expected '('}} */ #pragma clang loop vectorize_predicate
136 /* expected-error {{expected '('}} */ #pragma clang loop unroll
137 /* expected-error {{expected '('}} */ #pragma clang loop distribute
138 
139 /* expected-error {{expected ')'}} */ #pragma clang loop vectorize(enable
140 /* expected-error {{expected ')'}} */ #pragma clang loop interleave(enable
141 /* expected-error {{expected ')'}} */ #pragma clang loop vectorize_predicate(enable
142 /* expected-error {{expected ')'}} */ #pragma clang loop unroll(full
143 /* expected-error {{expected ')'}} */ #pragma clang loop distribute(enable
144 
145 /* expected-error {{expected ')'}} */ #pragma clang loop vectorize_width(4
146 /* expected-error {{expected ')'}} */ #pragma clang loop interleave_count(4
147 /* expected-error {{expected ')'}} */ #pragma clang loop unroll_count(4
148 
149 /* expected-error {{missing argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop vectorize()
150 /* expected-error {{missing argument; expected an integer value}} */ #pragma clang loop interleave_count()
151 /* expected-error {{missing argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll()
152 /* expected-error {{missing argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute()
153 
154 /* expected-error {{missing option; expected vectorize, vectorize_width, interleave, interleave_count, unroll, unroll_count, pipeline, pipeline_initiation_interval, vectorize_predicate, or distribute}} */ #pragma clang loop
155 /* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop badkeyword
156 /* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop badkeyword(enable)
157 /* expected-error {{invalid option 'badkeyword'}} */ #pragma clang loop vectorize(enable) badkeyword(4)
158 /* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize(enable) ,
159   while (i-4 < Length) {
160     List[i] = i;
161   }
162 
163 /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop vectorize_width(0)
164 /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(0)
165 /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop unroll_count(0)
166 
167 /* expected-error {{expression is not an integral constant expression}} expected-note {{division by zero}} */ #pragma clang loop vectorize_width(10 / 0)
168 /* expected-error {{invalid value '0'; must be positive}} */ #pragma clang loop interleave_count(10 / 5 - 2)
169   while (i-5 < Length) {
170     List[i] = i;
171   }
172 
173 test_nontype_template_vectorize<4>(List, Length);
174 /* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_vectorize<-1>(List, Length);
175 test_nontype_template_interleave<8>(List, Length);
176 /* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_interleave<-1>(List, Length);
177 
178 /* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_char<'A'>(List, Length); // Loop hint arg cannot be a char.
179 /* expected-note {{in instantiation of function template specialization}} */ test_nontype_template_bool<true>(List, Length);  // Or a bool.
180 /* expected-note {{in instantiation of function template specialization}} */ test_type_template_vectorize<int>(List, Length); // Or a template type.
181 
182 /* expected-error {{value '3000000000' is too large}} */ #pragma clang loop vectorize_width(3000000000)
183 /* expected-error {{value '3000000000' is too large}} */ #pragma clang loop interleave_count(3000000000)
184 /* expected-error {{value '3000000000' is too large}} */ #pragma clang loop unroll_count(3000000000)
185   while (i-6 < Length) {
186     List[i] = i;
187   }
188 
189 /* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize_width(1 +) 1
190 /* expected-warning {{extra tokens at end of '#pragma clang loop'}} */ #pragma clang loop vectorize_width(1) +1
191 const int VV = 4;
192 /* expected-error {{expected expression}} */ #pragma clang loop vectorize_width(VV +/ 2)
193 /* expected-error {{use of undeclared identifier 'undefined'}} */ #pragma clang loop vectorize_width(VV+undefined)
194 /* expected-error {{expected ')'}} */ #pragma clang loop vectorize_width(1+(^*/2 * ()
195 /* expected-warning {{extra tokens at end of '#pragma clang loop' - ignored}} */ #pragma clang loop vectorize_width(1+(-0[0]))))))
196 
197 /* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop vectorize_width(badvalue)
198 /* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop interleave_count(badvalue)
199 /* expected-error {{use of undeclared identifier 'badvalue'}} */ #pragma clang loop unroll_count(badvalue)
200   while (i-6 < Length) {
201     List[i] = i;
202   }
203 
204 /* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop vectorize(badidentifier)
205 /* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop interleave(badidentifier)
206 /* expected-error {{invalid argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll(badidentifier)
207 /* expected-error {{invalid argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute(badidentifier)
208   while (i-7 < Length) {
209     List[i] = i;
210   }
211 
212 // PR20069 - Loop pragma arguments that are not identifiers or numeric
213 // constants crash FE.
214 /* expected-error {{expected ')'}} */ #pragma clang loop vectorize(()
215 /* expected-error {{invalid argument; expected 'enable', 'assume_safety' or 'disable'}} */ #pragma clang loop interleave(*)
216 /* expected-error {{invalid argument; expected 'enable', 'full' or 'disable'}} */ #pragma clang loop unroll(=)
217 /* expected-error {{invalid argument; expected 'enable' or 'disable'}} */ #pragma clang loop distribute(+)
218 /* expected-error {{type name requires a specifier or qualifier}} expected-error {{expected expression}} */ #pragma clang loop vectorize_width(^)
219 /* expected-error {{expected expression}} expected-error {{expected expression}} */ #pragma clang loop interleave_count(/)
220 /* expected-error {{expected expression}} expected-error {{expected expression}} */ #pragma clang loop unroll_count(==)
221   while (i-8 < Length) {
222     List[i] = i;
223   }
224 
225 #pragma clang loop vectorize(enable)
226 /* expected-error {{expected a for, while, or do-while loop to follow '#pragma clang loop'}} */ int j = Length;
227   List[0] = List[1];
228 
229   while (j-1 < Length) {
230     List[j] = j;
231   }
232 
233 // FIXME: A bug in ParsedAttributes causes the order of the attributes to be
234 // processed in reverse. Consequently, the errors occur on the first of pragma
235 // of the next three tests rather than the last, and the order of the kinds
236 // is also reversed.
237 
238 #pragma clang loop vectorize_width(4)
239 /* expected-error {{incompatible directives 'vectorize(disable)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize(disable)
240 #pragma clang loop interleave_count(4)
241 /* expected-error {{incompatible directives 'interleave(disable)' and 'interleave_count(4)'}} */ #pragma clang loop interleave(disable)
242 #pragma clang loop unroll_count(4)
243 /* expected-error {{incompatible directives 'unroll(disable)' and 'unroll_count(4)'}} */ #pragma clang loop unroll(disable)
244   while (i-8 < Length) {
245     List[i] = i;
246   }
247 
248 #pragma clang loop vectorize(enable)
249 /* expected-error {{duplicate directives 'vectorize(enable)' and 'vectorize(disable)'}} */ #pragma clang loop vectorize(disable)
250 #pragma clang loop interleave(enable)
251 /* expected-error {{duplicate directives 'interleave(enable)' and 'interleave(disable)'}} */ #pragma clang loop interleave(disable)
252 #pragma clang loop vectorize_predicate(enable)
253 /* expected-error@+1 {{duplicate directives 'vectorize_predicate(enable)' and 'vectorize_predicate(disable)'}} */
254 #pragma clang loop vectorize_predicate(disable)
255 #pragma clang loop unroll(full)
256 /* expected-error {{duplicate directives 'unroll(full)' and 'unroll(disable)'}} */ #pragma clang loop unroll(disable)
257 #pragma clang loop distribute(enable)
258 /* expected-error {{duplicate directives 'distribute(enable)' and 'distribute(disable)'}} */ #pragma clang loop distribute(disable)
259   while (i-9 < Length) {
260     List[i] = i;
261   }
262 
263 #pragma clang loop vectorize(disable)
264 /* expected-error {{incompatible directives 'vectorize(disable)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize_width(4)
265 #pragma clang loop interleave(disable)
266 /* expected-error {{incompatible directives 'interleave(disable)' and 'interleave_count(4)'}} */ #pragma clang loop interleave_count(4)
267 #pragma clang loop unroll(disable)
268 /* expected-error {{incompatible directives 'unroll(disable)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
269   while (i-10 < Length) {
270     List[i] = i;
271   }
272 
273 #pragma clang loop vectorize_width(8)
274 /* expected-error {{duplicate directives 'vectorize_width(8)' and 'vectorize_width(4)'}} */ #pragma clang loop vectorize_width(4)
275 #pragma clang loop interleave_count(8)
276 /* expected-error {{duplicate directives 'interleave_count(8)' and 'interleave_count(4)'}} */ #pragma clang loop interleave_count(4)
277 #pragma clang loop unroll_count(8)
278 /* expected-error {{duplicate directives 'unroll_count(8)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
279   while (i-11 < Length) {
280     List[i] = i;
281   }
282 
283 #pragma clang loop unroll(full)
284 /* expected-error {{incompatible directives 'unroll(full)' and 'unroll_count(4)'}} */ #pragma clang loop unroll_count(4)
285   while (i-11 < Length) {
286     List[i] = i;
287   }
288 
289 #pragma clang loop interleave(enable)
290 /* expected-error {{expected statement}} */ }
291 
292 void foo(void) {
293 #pragma clang loop vectorize_predicate(enable)
294 /* expected-error {{expected statement}} */ }
295