| 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 | |