1 | // RUN: %clang_cc1 %s -Wno-private-extern -triple i386-pc-linux-gnu -verify -fsyntax-only |
2 | |
3 | |
4 | void f() { |
5 | int i; |
6 | |
7 | asm ("foo\n" : : "a" (i + 2)); |
8 | asm ("foo\n" : : "a" (f())); // expected-error {{invalid type 'void' in asm input}} |
9 | |
10 | asm ("foo\n" : "=a" (f())); // expected-error {{invalid lvalue in asm output}} |
11 | asm ("foo\n" : "=a" (i + 2)); // expected-error {{invalid lvalue in asm output}} |
12 | |
13 | asm ("foo\n" : [symbolic_name] "=a" (i) : "[symbolic_name]" (i)); |
14 | asm ("foo\n" : "=a" (i) : "[" (i)); // expected-error {{invalid input constraint '[' in asm}} |
15 | asm ("foo\n" : "=a" (i) : "[foo" (i)); // expected-error {{invalid input constraint '[foo' in asm}} |
16 | asm ("foo\n" : "=a" (i) : "[symbolic_name]" (i)); // expected-error {{invalid input constraint '[symbolic_name]' in asm}} |
17 | |
18 | asm ("foo\n" : : "" (i)); // expected-error {{invalid input constraint '' in asm}} |
19 | asm ("foo\n" : "=a" (i) : "" (i)); // expected-error {{invalid input constraint '' in asm}} |
20 | } |
21 | |
22 | void clobbers() { |
23 | asm ("nop" : : : "ax", "#ax", "%ax"); |
24 | asm ("nop" : : : "eax", "rax", "ah", "al"); |
25 | asm ("nop" : : : "0", "%0", "#0"); |
26 | asm ("nop" : : : "foo"); // expected-error {{unknown register name 'foo' in asm}} |
27 | asm ("nop" : : : "52"); |
28 | asm ("nop" : : : "204"); // expected-error {{unknown register name '204' in asm}} |
29 | asm ("nop" : : : "-1"); // expected-error {{unknown register name '-1' in asm}} |
30 | asm ("nop" : : : "+1"); // expected-error {{unknown register name '+1' in asm}} |
31 | register void *clobber_conflict asm ("%rcx"); |
32 | register void *no_clobber_conflict asm ("%rax"); |
33 | int a,b,c; |
34 | asm ("nop" : "=r" (no_clobber_conflict) : "r" (clobber_conflict) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
35 | asm ("nop" : "=r" (clobber_conflict) : "r" (no_clobber_conflict) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
36 | asm ("nop" : "=r" (clobber_conflict) : "r" (clobber_conflict) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
37 | asm ("nop" : "=c" (a) : "r" (no_clobber_conflict) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
38 | asm ("nop" : "=r" (no_clobber_conflict) : "c" (c) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
39 | asm ("nop" : "=r" (clobber_conflict) : "c" (c) : "%rcx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
40 | asm ("nop" : "=a" (a) : "b" (b) : "%rcx", "%rbx"); // expected-error {{asm-specifier for input or output variable conflicts with asm clobber list}} |
41 | } |
42 | |
43 | // rdar://6094010 |
44 | void test3() { |
45 | int x; |
46 | asm(L"foo" : "=r"(x)); // expected-error {{wide string}} |
47 | asm("foo" : L"=r"(x)); // expected-error {{wide string}} |
48 | } |
49 | |
50 | // <rdar://problem/6156893> |
51 | void test4(const volatile void *addr) |
52 | { |
53 | asm ("nop" : : "r"(*addr)); // expected-error {{invalid type 'const volatile void' in asm input for constraint 'r'}} |
54 | asm ("nop" : : "m"(*addr)); |
55 | |
56 | asm ("nop" : : "r"(test4(addr))); // expected-error {{invalid type 'void' in asm input for constraint 'r'}} |
57 | asm ("nop" : : "m"(test4(addr))); // expected-error {{invalid lvalue in asm input for constraint 'm'}} |
58 | |
59 | asm ("nop" : : "m"(f())); // expected-error {{invalid lvalue in asm input for constraint 'm'}} |
60 | } |
61 | |
62 | // <rdar://problem/6512595> |
63 | void test5() { |
64 | asm("nop" : : "X" (8)); |
65 | } |
66 | |
67 | // PR3385 |
68 | void test6(long i) { |
69 | asm("nop" : : "er"(i)); |
70 | } |
71 | |
72 | void asm_string_tests(int i) { |
73 | asm("%!"); // simple asm string, %! is not an error. |
74 | asm("%!" : ); // expected-error {{invalid % escape in inline assembly string}} |
75 | asm("xyz %" : ); // expected-error {{invalid % escape in inline assembly string}} |
76 | |
77 | asm ("%[somename]" :: [somename] "i"(4)); // ok |
78 | asm ("%[somename]" :: "i"(4)); // expected-error {{unknown symbolic operand name in inline assembly string}} |
79 | asm ("%[somename" :: "i"(4)); // expected-error {{unterminated symbolic operand name in inline assembly string}} |
80 | asm ("%[]" :: "i"(4)); // expected-error {{empty symbolic operand name in inline assembly string}} |
81 | |
82 | // PR3258 |
83 | asm("%9" :: "i"(4)); // expected-error {{invalid operand number in inline asm string}} |
84 | asm("%1" : "+r"(i)); // ok, referring to input. |
85 | } |
86 | |
87 | // PR4077 |
88 | int test7(unsigned long long b) { |
89 | int a; |
90 | asm volatile("foo %0 %1" : "=a" (a) :"0" (b)); // expected-error {{input with type 'unsigned long long' matching output with type 'int'}} |
91 | return a; |
92 | } |
93 | |
94 | // <rdar://problem/7574870> |
95 | asm volatile (""); // expected-warning {{meaningless 'volatile' on asm outside function}} |
96 | |
97 | // PR3904 |
98 | void test8(int i) { |
99 | // A number in an input constraint can't point to a read-write constraint. |
100 | asm("" : "+r" (i), "=r"(i) : "0" (i)); // expected-error{{invalid input constraint '0' in asm}} |
101 | } |
102 | |
103 | // PR3905 |
104 | void test9(int i) { |
105 | asm("" : [foo] "=r" (i), "=r"(i) : "1[foo]"(i)); // expected-error{{invalid input constraint '1[foo]' in asm}} |
106 | asm("" : [foo] "=r" (i), "=r"(i) : "[foo]1"(i)); // expected-error{{invalid input constraint '[foo]1' in asm}} |
107 | } |
108 | |
109 | void test10(void){ |
110 | static int g asm ("g_asm") = 0; |
111 | extern int gg asm ("gg_asm"); |
112 | __private_extern__ int ggg asm ("ggg_asm"); |
113 | |
114 | int a asm ("a_asm"); // expected-warning{{ignored asm label 'a_asm' on automatic variable}} |
115 | auto int aa asm ("aa_asm"); // expected-warning{{ignored asm label 'aa_asm' on automatic variable}} |
116 | |
117 | register int r asm ("cx"); |
118 | register int rr asm ("rr_asm"); // expected-error{{unknown register name 'rr_asm' in asm}} |
119 | register int rrr asm ("%"); // expected-error{{unknown register name '%' in asm}} |
120 | } |
121 | |
122 | // This is just an assert because of the boolean conversion. |
123 | // Feel free to change the assembly to something sensible if it causes a problem. |
124 | // rdar://problem/9414925 |
125 | void test11(void) { |
126 | _Bool b; |
127 | asm volatile ("movb %%gs:%P2,%b0" : "=q"(b) : "0"(0), "i"(5L)); |
128 | } |
129 | |
130 | void test12(void) { |
131 | register int cc __asm ("cc"); // expected-error{{unknown register name 'cc' in asm}} |
132 | } |
133 | |
134 | // PR10223 |
135 | void test13(void) { |
136 | void *esp; |
137 | __asm__ volatile ("mov %%esp, %o" : "=r"(esp) : : ); // expected-error {{invalid % escape in inline assembly string}} |
138 | } |
139 | |
140 | // <rdar://problem/12700799> |
141 | struct S; // expected-note 2 {{forward declaration of 'struct S'}} |
142 | void test14(struct S *s) { |
143 | __asm("": : "a"(*s)); // expected-error {{dereference of pointer to incomplete type 'struct S'}} |
144 | __asm("": "=a" (*s) :); // expected-error {{dereference of pointer to incomplete type 'struct S'}} |
145 | } |
146 | |
147 | // PR15759. |
148 | double test15() { |
149 | double ret = 0; |
150 | __asm("0.0":"="(ret)); // expected-error {{invalid output constraint '=' in asm}} |
151 | __asm("0.0":"=&"(ret)); // expected-error {{invalid output constraint '=&' in asm}} |
152 | __asm("0.0":"+?"(ret)); // expected-error {{invalid output constraint '+?' in asm}} |
153 | __asm("0.0":"+!"(ret)); // expected-error {{invalid output constraint '+!' in asm}} |
154 | __asm("0.0":"+#"(ret)); // expected-error {{invalid output constraint '+#' in asm}} |
155 | __asm("0.0":"+*"(ret)); // expected-error {{invalid output constraint '+*' in asm}} |
156 | __asm("0.0":"=%"(ret)); // expected-error {{invalid output constraint '=%' in asm}} |
157 | __asm("0.0":"=,="(ret)); // expected-error {{invalid output constraint '=,=' in asm}} |
158 | __asm("0.0":"=,g"(ret)); // no-error |
159 | __asm("0.0":"=g"(ret)); // no-error |
160 | return ret; |
161 | } |
162 | |
163 | void iOutputConstraint(int x){ |
164 | __asm ("nop" : "=ir" (x) : :); // no-error |
165 | __asm ("nop" : "=ri" (x) : :); // no-error |
166 | __asm ("nop" : "=ig" (x) : :); // no-error |
167 | __asm ("nop" : "=im" (x) : :); // no-error |
168 | __asm ("nop" : "=imr" (x) : :); // no-error |
169 | __asm ("nop" : "=i" (x) : :); // expected-error{{invalid output constraint '=i' in asm}} |
170 | __asm ("nop" : "+i" (x) : :); // expected-error{{invalid output constraint '+i' in asm}} |
171 | __asm ("nop" : "=ii" (x) : :); // expected-error{{invalid output constraint '=ii' in asm}} |
172 | __asm ("nop" : "=nr" (x) : :); // no-error |
173 | __asm ("nop" : "=rn" (x) : :); // no-error |
174 | __asm ("nop" : "=ng" (x) : :); // no-error |
175 | __asm ("nop" : "=nm" (x) : :); // no-error |
176 | __asm ("nop" : "=nmr" (x) : :); // no-error |
177 | __asm ("nop" : "=n" (x) : :); // expected-error{{invalid output constraint '=n' in asm}} |
178 | __asm ("nop" : "+n" (x) : :); // expected-error{{invalid output constraint '+n' in asm}} |
179 | __asm ("nop" : "=nn" (x) : :); // expected-error{{invalid output constraint '=nn' in asm}} |
180 | __asm ("nop" : "=Fr" (x) : :); // no-error |
181 | __asm ("nop" : "=rF" (x) : :); // no-error |
182 | __asm ("nop" : "=Fg" (x) : :); // no-error |
183 | __asm ("nop" : "=Fm" (x) : :); // no-error |
184 | __asm ("nop" : "=Fmr" (x) : :); // no-error |
185 | __asm ("nop" : "=F" (x) : :); // expected-error{{invalid output constraint '=F' in asm}} |
186 | __asm ("nop" : "+F" (x) : :); // expected-error{{invalid output constraint '+F' in asm}} |
187 | __asm ("nop" : "=FF" (x) : :); // expected-error{{invalid output constraint '=FF' in asm}} |
188 | __asm ("nop" : "=Er" (x) : :); // no-error |
189 | __asm ("nop" : "=rE" (x) : :); // no-error |
190 | __asm ("nop" : "=Eg" (x) : :); // no-error |
191 | __asm ("nop" : "=Em" (x) : :); // no-error |
192 | __asm ("nop" : "=Emr" (x) : :); // no-error |
193 | __asm ("nop" : "=E" (x) : :); // expected-error{{invalid output constraint '=E' in asm}} |
194 | __asm ("nop" : "+E" (x) : :); // expected-error{{invalid output constraint '+E' in asm}} |
195 | __asm ("nop" : "=EE" (x) : :); // expected-error{{invalid output constraint '=EE' in asm}} |
196 | } |
197 | |
198 | // PR19837 |
199 | struct foo { |
200 | int a; |
201 | }; |
202 | register struct foo bar asm("esp"); // expected-error {{bad type for named register variable}} |
203 | register float baz asm("esp"); // expected-error {{bad type for named register variable}} |
204 | |
205 | register int r0 asm ("edi"); // expected-error {{register 'edi' unsuitable for global register variables on this target}} |
206 | register long long r1 asm ("esp"); // expected-error {{size of register 'esp' does not match variable size}} |
207 | register int r2 asm ("esp"); |
208 | |
209 | double f_output_constraint(void) { |
210 | double result; |
211 | __asm("foo1": "=f" (result)); // expected-error {{invalid output constraint '=f' in asm}} |
212 | return result; |
213 | } |
214 | |
215 | void fn1() { |
216 | int l; |
217 | __asm__("" |
218 | : [l] "=r"(l) |
219 | : "[l],m"(l)); // expected-error {{asm constraint has an unexpected number of alternatives: 1 vs 2}} |
220 | } |
221 | |
222 | void fn2() { |
223 | int l; |
224 | __asm__("" |
225 | : "+&m"(l)); // expected-error {{invalid output constraint '+&m' in asm}} |
226 | } |
227 | |
228 | void fn3() { |
229 | int l; |
230 | __asm__("" |
231 | : "+#r"(l)); // expected-error {{invalid output constraint '+#r' in asm}} |
232 | } |
233 | |
234 | void fn4() { |
235 | int l; |
236 | __asm__("" |
237 | : "=r"(l) |
238 | : "m#"(l)); |
239 | } |
240 | |
241 | void fn5() { |
242 | int l; |
243 | __asm__("" |
244 | : [g] "+r"(l) |
245 | : "[g]"(l)); // expected-error {{invalid input constraint '[g]' in asm}} |
246 | } |
247 | |
248 | void fn6() { |
249 | int a; |
250 | __asm__("" |
251 | : "=rm"(a), "=rm"(a) |
252 | : "11m"(a)); // expected-error {{invalid input constraint '11m' in asm}} |
253 | } |
254 | |
255 | // PR14269 |
256 | typedef struct test16_foo { |
257 | unsigned int field1 : 1; |
258 | unsigned int field2 : 2; |
259 | unsigned int field3 : 3; |
260 | } test16_foo; |
261 | typedef __attribute__((vector_size(16))) int test16_bar; |
262 | register int test16_baz asm("esp"); |
263 | |
264 | void test16() |
265 | { |
266 | test16_foo a; |
267 | test16_bar b; |
268 | |
269 | __asm__("movl $5, %0" |
270 | : "=rm" (a.field2)); // expected-error {{reference to a bit-field in asm input with a memory constraint '=rm'}} |
271 | __asm__("movl $5, %0" |
272 | : |
273 | : "m" (a.field3)); // expected-error {{reference to a bit-field in asm output with a memory constraint 'm'}} |
274 | __asm__("movl $5, %0" |
275 | : "=rm" (b[2])); // expected-error {{reference to a vector element in asm input with a memory constraint '=rm'}} |
276 | __asm__("movl $5, %0" |
277 | : |
278 | : "m" (b[3])); // expected-error {{reference to a vector element in asm output with a memory constraint 'm'}} |
279 | __asm__("movl $5, %0" |
280 | : "=rm" (test16_baz)); // expected-error {{reference to a global register variable in asm input with a memory constraint '=rm'}} |
281 | __asm__("movl $5, %0" |
282 | : |
283 | : "m" (test16_baz)); // expected-error {{reference to a global register variable in asm output with a memory constraint 'm'}} |
284 | } |
285 | |
286 | int test17(int t0) |
287 | { |
288 | int r0, r1; |
289 | __asm ("addl %2, %2\n\t" |
290 | "movl $123, %0" |
291 | : "=a" (r0), |
292 | "=&r" (r1) |
293 | : "1" (t0), // expected-note {{constraint '1' is already present here}} |
294 | "1" (t0)); // expected-error {{more than one input constraint matches the same output '1'}} |
295 | return r0 + r1; |
296 | } |
297 | |
298 | |