1 // REQUIRES: x86-registered-target
2 // RUN: %clang_cc1 %s -triple i386-apple-darwin10 -fasm-blocks -emit-llvm -o - | FileCheck %s
3 
4 void t1() {
5 // CHECK: @t1
6 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"()
7 // CHECK: ret void
8   __asm {}
9 }
10 
11 void t2() {
12 // CHECK: @t2
13 // CHECK: call void asm sideeffect inteldialect "nop\0A\09nop\0A\09nop", "~{dirflag},~{fpsr},~{flags}"()
14 // CHECK: ret void
15   __asm nop
16   __asm nop
17   __asm nop
18 }
19 
20 void t3() {
21 // CHECK: @t3
22 // CHECK: call void asm sideeffect inteldialect "nop\0A\09nop\0A\09nop", "~{dirflag},~{fpsr},~{flags}"()
23 // CHECK: ret void
24   __asm nop __asm nop __asm nop
25 }
26 
27 void t4(void) {
28 // CHECK: @t4
29 // CHECK: call void asm sideeffect inteldialect "mov ebx, eax\0A\09mov ecx, ebx", "~{ebx},~{ecx},~{dirflag},~{fpsr},~{flags}"()
30 // CHECK: ret void
31   __asm mov ebx, eax
32   __asm mov ecx, ebx
33 }
34 
35 void t5(void) {
36 // CHECK: @t5
37 // CHECK: call void asm sideeffect inteldialect "mov ebx, eax\0A\09mov ecx, ebx", "~{ebx},~{ecx},~{dirflag},~{fpsr},~{flags}"()
38 // CHECK: ret void
39   __asm mov ebx, eax __asm mov ecx, ebx
40 }
41 
42 void t6(void) {
43   __asm int 0x2c
44 // CHECK: t6
45 // CHECK: call void asm sideeffect inteldialect "int $$0x2c", "~{dirflag},~{fpsr},~{flags}"()
46 }
47 
48 void t7() {
49   __asm {
50     int 0x2cU ; } asm comments are fun! }{
51   }
52   __asm {
53     {
54       int 0x2c ; } asm comments are fun! }{
55     }
56   }
57   __asm {}
58   __asm {
59     ;
60     ; label
61     mov eax, ebx
62   }
63 // CHECK: t7
64 // CHECK: call void asm sideeffect inteldialect "int $$0x2cU", "~{dirflag},~{fpsr},~{flags}"()
65 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"()
66 // CHECK: call void asm sideeffect inteldialect "mov eax, ebx", "~{eax},~{dirflag},~{fpsr},~{flags}"()
67 }
68 
69 int t8() {
70   __asm int 4 ; } comments for single-line asm
71   __asm {}
72   __asm { int 5}
73   __asm int 6
74   __asm int 7
75   __asm {
76     int 8
77   }
78   return 10;
79 // CHECK: t8
80 // CHECK: call i32 asm sideeffect inteldialect "int $$4", "={eax},~{dirflag},~{fpsr},~{flags}"()
81 // CHECK: call i32 asm sideeffect inteldialect "", "={eax},~{dirflag},~{fpsr},~{flags}"()
82 // CHECK: call i32 asm sideeffect inteldialect "int $$5", "={eax},~{dirflag},~{fpsr},~{flags}"()
83 // CHECK: call i32 asm sideeffect inteldialect "int $$6\0A\09int $$7", "={eax},~{dirflag},~{fpsr},~{flags}"()
84 // CHECK: call i32 asm sideeffect inteldialect "int $$8", "={eax},~{dirflag},~{fpsr},~{flags}"()
85 // CHECK: ret i32 10
86 }
87 
88 void t9() {
89   __asm {
90     push ebx
91     { mov ebx, 0x07 }
92     __asm { pop ebx }
93   }
94 // CHECK: t9
95 // CHECK: call void asm sideeffect inteldialect "push ebx\0A\09mov ebx, $$0x07\0A\09pop ebx\0A\09", "~{ebx},~{esp},~{dirflag},~{fpsr},~{flags}"()
96 }
97 
98 unsigned t10(void) {
99   unsigned i = 1, j;
100   __asm {
101     mov eax, i
102     mov j, eax
103   }
104   return j;
105 // CHECK: t10
106 // CHECK: [[r:%[a-zA-Z0-9]+]] = alloca i32, align 4
107 // CHECK: [[I:%[a-zA-Z0-9]+]] = alloca i32, align 4
108 // CHECK: [[J:%[a-zA-Z0-9]+]] = alloca i32, align 4
109 // CHECK: store i32 1, i32* [[I]], align 4
110 // CHECK: call i32 asm sideeffect inteldialect "mov eax, dword ptr $2\0A\09mov dword ptr $0, eax", "=*m,={eax},*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}})
111 // CHECK: [[RET:%[a-zA-Z0-9]+]] = load i32, i32* [[J]], align 4
112 // CHECK: ret i32 [[RET]]
113 }
114 
115 void t11(void) {
116   __asm mov eax, 1
117 // CHECK: t11
118 // CHECK: call void asm sideeffect inteldialect "mov eax, $$1", "~{eax},~{dirflag},~{fpsr},~{flags}"()
119 }
120 
121 unsigned t12(void) {
122   unsigned i = 1, j, l = 1, m;
123   __asm {
124     mov eax, i
125     mov j, eax
126     mov eax, l
127     mov m, eax
128   }
129   return j + m;
130 // CHECK: t12
131 // CHECK: call i32 asm sideeffect inteldialect "mov eax, dword ptr $3\0A\09mov dword ptr $0, eax\0A\09mov eax, dword ptr $4\0A\09mov dword ptr $1, eax", "=*m,=*m,={eax},*m,*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}})
132 }
133 
134 void t13() {
135   char i = 1;
136   short j = 2;
137   __asm movzx eax, i
138   __asm movzx eax, j
139 // CHECK: t13
140 // CHECK: call void asm sideeffect inteldialect "movzx eax, byte ptr $0\0A\09movzx eax, word ptr $1", "*m,*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i8* %{{.*}}i, i16* %{{.*}}j)
141 }
142 
143 void t14() {
144   unsigned i = 1, j = 2;
145   __asm {
146     .if 1
147     { mov eax, i }
148     .else
149     mov ebx, j
150     .endif
151   }
152 // CHECK: t14
153 // CHECK: call void asm sideeffect inteldialect ".if 1\0A\09mov eax, dword ptr $0\0A\09.else\0A\09mov ebx, j\0A\09.endif", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
154 }
155 
156 int gvar = 10;
157 void t15() {
158 // CHECK: t15
159   int lvar = 10;
160   __asm mov eax, lvar        ; eax = 10
161 // CHECK: mov eax, dword ptr $0
162   __asm mov eax, offset lvar ; eax = address of lvar
163 // CHECK: mov eax, $1
164   __asm mov eax, offset gvar ; eax = address of gvar
165 // CHECK: mov eax, $2
166 // CHECK: "*m,r,r,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}}, i32* @{{.*}})
167 }
168 
169 void t16() {
170   int var = 10;
171   __asm mov [eax], offset var
172 // CHECK: t16
173 // CHECK: call void asm sideeffect inteldialect "mov [eax], $0", "r,~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
174 }
175 
176 void t17() {
177 // CHECK: t17
178   __asm _emit 0x4A
179 // CHECK: .byte 0x4A
180   __asm _emit 0x43L
181 // CHECK: .byte 0x43L
182   __asm _emit 0x4B
183 // CHECK: .byte 0x4B
184   __asm _EMIT 0x4B
185 // CHECK: .byte 0x4B
186 // CHECK:  "~{dirflag},~{fpsr},~{flags}"()
187 }
188 
189 void t20() {
190 // CHECK: t20
191   char bar;
192   int foo;
193   char _bar[2];
194   int _foo[4];
195 
196   __asm mov eax, LENGTH foo
197 // CHECK: mov eax, $$1
198   __asm mov eax, LENGTH bar
199 // CHECK: mov eax, $$1
200   __asm mov eax, LENGTH _foo
201 // CHECK: mov eax, $$4
202   __asm mov eax, LENGTH _bar
203 // CHECK: mov eax, $$2
204 
205   __asm mov eax, TYPE foo
206 // CHECK: mov eax, $$4
207   __asm mov eax, TYPE bar
208 // CHECK: mov eax, $$1
209   __asm mov eax, TYPE _foo
210 // CHECK: mov eax, $$4
211   __asm mov eax, TYPE _bar
212 // CHECK: mov eax, $$1
213 
214   __asm mov eax, SIZE foo
215 // CHECK: mov eax, $$4
216   __asm mov eax, SIZE bar
217 // CHECK: mov eax, $$1
218   __asm mov eax, SIZE _foo
219 // CHECK: mov eax, $$16
220   __asm mov eax, SIZE _bar
221 // CHECK: mov eax, $$2
222 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
223 }
224 
225 void t21() {
226   __asm {
227     __asm push ebx
228     __asm mov ebx, 07H
229     __asm pop ebx
230   }
231 // CHECK: t21
232 // CHECK: call void asm sideeffect inteldialect "push ebx\0A\09mov ebx, $$07H\0A\09pop ebx", "~{ebx},~{esp},~{dirflag},~{fpsr},~{flags}"()
233 }
234 
235 extern void t22_helper(int x);
236 void t22() {
237   int x = 0;
238   __asm {
239     __asm push ebx
240     __asm mov ebx, esp
241   }
242   t22_helper(x);
243   __asm {
244     __asm mov esp, ebx
245     __asm pop ebx
246   }
247 // CHECK: t22
248 // CHECK: call void asm sideeffect inteldialect "push ebx\0A\09mov ebx, esp", "~{ebx},~{esp},~{dirflag},~{fpsr},~{flags}"()
249 // CHECK: call void @t22_helper
250 // CHECK: call void asm sideeffect inteldialect "mov esp, ebx\0A\09pop ebx", "~{ebx},~{esp},~{dirflag},~{fpsr},~{flags}"()
251 }
252 
253 void t23() {
254   __asm {
255   the_label:
256   }
257 // CHECK: t23
258 // CHECK: call void asm sideeffect inteldialect "{{.*}}__MSASMLABEL_.${:uid}__the_label:", "~{dirflag},~{fpsr},~{flags}"()
259 }
260 
261 void t24_helper(void) {}
262 void t24() {
263   __asm call t24_helper
264 // CHECK: t24
265 // CHECK: call void asm sideeffect inteldialect "call dword ptr $0", "*m,~{dirflag},~{fpsr},~{flags}"(void ()* @t24_helper)
266 }
267 
268 void t25() {
269 // CHECK: t25
270   __asm mov eax, 0ffffffffh
271 // CHECK: mov eax, $$0ffffffffh
272   __asm mov eax, 0fhU
273 // CHECK: mov eax, $$15
274   __asm mov eax, 0a2h
275 // CHECK: mov eax, $$0a2h
276   __asm mov eax, 10100010b
277 // CHECK: mov eax, $$10100010b
278   __asm mov eax, 10100010BU
279 // CHECK: mov eax, $$162
280 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
281 }
282 
283 void t26() {
284 // CHECK: t26
285   __asm pushad
286 // CHECK: pushad
287   __asm mov eax, 0
288 // CHECK: mov eax, $$0
289   __asm __emit 0fh
290 // CHECK: .byte 0fh
291   __asm __emit 0a2h
292 // CHECK: .byte 0a2h
293   __asm __EMIT 0a2h
294 // CHECK: .byte 0a2h
295   __asm popad
296 // CHECK: popad
297 // CHECK: "~{eax},~{ebp},~{ebx},~{ecx},~{edi},~{edx},~{esi},~{esp},~{dirflag},~{fpsr},~{flags}"()
298 }
299 
300 void t27() {
301   __asm mov eax, fs:[0h]
302 // CHECK: t27
303 // CHECK: call void asm sideeffect inteldialect "mov eax, fs:[$$0h]", "~{eax},~{dirflag},~{fpsr},~{flags}"()
304 }
305 
306 void t28() {
307 // CHECK: t28
308   __asm align 8
309 // CHECK: .align 3
310   __asm align 16;
311 // CHECK: .align 4
312   __asm align 128;
313 // CHECK: .align 7
314   __asm ALIGN 256;
315 // CHECK: .align 8
316 // CHECK: "~{dirflag},~{fpsr},~{flags}"()
317 }
318 
319 void t29() {
320 // CHECK: t29
321   int arr[2] = {0, 0};
322   int olen = 0, osize = 0, otype = 0;
323   __asm mov olen, LENGTH arr
324 // CHECK: mov dword ptr $0, $$2
325   __asm mov osize, SIZE arr
326 // CHECK: mov dword ptr $1, $$8
327   __asm mov otype, TYPE arr
328 // CHECK: mov dword ptr $2, $$4
329 // CHECK: "=*m,=*m,=*m,~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}})
330 }
331 
332 int results[2] = {13, 37};
333 int *t30()
334 // CHECK: t30
335 {
336   int *res;
337   __asm lea edi, results
338 // CHECK: lea edi, dword ptr $2
339   __asm mov res, edi
340 // CHECK: mov dword ptr $0, edi
341   return res;
342 // CHECK: "=*m,={eax},*m,~{edi},~{dirflag},~{fpsr},~{flags}"(i32** %{{.*}}, [2 x i32]* @{{.*}})
343 }
344 
345 void t31() {
346 // CHECK: t31
347   __asm pushad
348 // CHECK: pushad
349   __asm popad
350 // CHECK: popad
351 // CHECK: "~{eax},~{ebp},~{ebx},~{ecx},~{edi},~{edx},~{esi},~{esp},~{dirflag},~{fpsr},~{flags}"()
352 }
353 
354 void t32() {
355 // CHECK: t32
356   int i;
357   __asm mov eax, i
358 // CHECK: mov eax, dword ptr $0
359   __asm mov eax, dword ptr i
360 // CHECK: mov eax, dword ptr $1
361   __asm mov ax, word ptr i
362 // CHECK: mov ax, word ptr $2
363   __asm mov al, byte ptr i
364 // CHECK: mov al, byte ptr $3
365 // CHECK: "*m,*m,*m,*m,~{al},~{ax},~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}})
366 }
367 
368 void t33() {
369 // CHECK: t33
370   int i;
371   __asm mov eax, [i]
372 // CHECK: mov eax, dword ptr $0
373   __asm mov eax, dword ptr [i]
374 // CHECK: mov eax, dword ptr $1
375   __asm mov ax, word ptr [i]
376 // CHECK: mov ax, word ptr $2
377   __asm mov al, byte ptr [i]
378 // CHECK: mov al, byte ptr $3
379 // CHECK: "*m,*m,*m,*m,~{al},~{ax},~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}}, i32* %{{.*}})
380 }
381 
382 void t34() {
383 // CHECK: t34
384   __asm prefetchnta 64[eax]
385 // CHECK: prefetchnta $$64[eax]
386   __asm mov eax, dword ptr 4[eax]
387 // CHECK: mov eax, dword ptr $$4[eax]
388 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
389 }
390 
391 void t35() {
392 // CHECK: t35
393   __asm prefetchnta [eax + (200*64)]
394 // CHECK: prefetchnta [eax + ($$200*$$64)]
395   __asm mov eax, dword ptr [eax + (200*64)]
396 // CHECK: mov eax, dword ptr [eax + ($$200*$$64)]
397 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
398 }
399 
400 void t36() {
401 // CHECK: t36
402   int arr[4];
403   // Work around PR20368: These should be single line blocks
404   __asm { mov eax, 4[arr] }
405 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
406   __asm { mov eax, 4[arr + 4] }
407 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
408   __asm { mov eax, 8[arr + 4 + 32*2 - 4] }
409 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$72$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
410   __asm { mov eax, 12[4 + arr] }
411 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$16$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
412   __asm { mov eax, 4[4 + arr + 4] }
413 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$12$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
414   __asm { mov eax, 4[64 + arr + (2*32)] }
415 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$132$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
416   __asm { mov eax, 4[64 + arr - 2*32] }
417 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
418   __asm { mov eax, [arr + 4] }
419 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
420   __asm { mov eax, [arr + 4 + 32*2 - 4] }
421 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$64$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
422   __asm { mov eax, [4 + arr] }
423 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
424   __asm { mov eax, [4 + arr + 4] }
425 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
426   __asm { mov eax, [64 + arr + (2*32)] }
427 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$128$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
428   __asm { mov eax, [64 + arr - 2*32] }
429 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
430 }
431 
432 void t37() {
433 // CHECK: t37
434   __asm mov eax, 4 + 8
435 // CHECK: mov eax, $$12
436   __asm mov eax, 4 + 8 * 16
437 // CHECK: mov eax, $$132
438   __asm mov eax, -4 + 8 * 16
439 // CHECK: mov eax, $$124
440   __asm mov eax, (4 + 4) * 16
441 // CHECK: mov eax, $$128
442   __asm mov eax, 4 + 8 * -16
443 // CHECK: mov eax, $$4294967172
444   __asm mov eax, 4 + 16 / -8
445 // CHECK: mov eax, $$2
446   __asm mov eax, (16 + 16) / -8
447 // CHECK: mov eax, $$4294967292
448   __asm mov eax, ~15
449 // CHECK: mov eax, $$4294967280
450   __asm mov eax, 6 ^ 3
451 // CHECK: mov eax, $$5
452 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
453 }
454 
455 void t38() {
456 // CHECK: t38
457   int arr[4];
458   // Work around PR20368: These should be single line blocks
459   __asm { mov eax, 4+4[arr] }
460 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
461   __asm { mov eax, (4+4)[arr + 4] }
462 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$12$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
463   __asm { mov eax, 8*2[arr + 4 + 32*2 - 4] }
464 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$80$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
465   __asm { mov eax, 12+20[4 + arr] }
466 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$36$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
467   __asm { mov eax, 4*16+4[4 + arr + 4] }
468 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$76$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
469   __asm { mov eax, 4*4[64 + arr + (2*32)] }
470 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$144$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
471   __asm { mov eax, 4*(4-2)[64 + arr - 2*32] }
472 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
473   __asm { mov eax, 32*(4-2)[arr - 2*32] }
474 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$0$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %{{.*}})
475 }
476 
477 void cpuid() {
478   __asm cpuid
479 // CHECK-LABEL: define void @cpuid
480 // CHECK: call void asm sideeffect inteldialect "cpuid", "~{eax},~{ebx},~{ecx},~{edx},~{dirflag},~{fpsr},~{flags}"()
481 }
482 
483 typedef struct {
484   int a;
485   int b;
486 } A;
487 
488 typedef struct {
489   int b1;
490   A   b2;
491 } B;
492 
493 typedef struct {
494   int c1;
495   A   c2;
496   int c3;
497   B   c4;
498 } C;
499 
500 void t39() {
501 // CHECK-LABEL: define void @t39
502   __asm mov eax, [eax].A.b
503 // CHECK: mov eax, [eax].4
504   __asm mov eax, [eax] A.b
505 // CHECK: mov eax, [eax] .4
506   __asm mov eax, fs:[0] A.b
507 // CHECK: mov eax, fs:[$$0] .4
508   __asm mov eax, [eax].B.b2.a
509 // CHECK: mov eax, [eax].4
510   __asm mov eax, [eax] B.b2.b
511 // CHECK: mov eax, [eax] .8
512   __asm mov eax, fs:[0] C.c2.b
513 // CHECK: mov eax, fs:[$$0] .8
514   __asm mov eax, [eax]C.c4.b2.b
515 // CHECK: mov eax, [eax].24
516 // CHECK: "~{eax},~{dirflag},~{fpsr},~{flags}"()
517 }
518 
519 void t40(float a) {
520 // CHECK-LABEL: define void @t40
521   int i;
522   __asm fld a
523 // CHECK: fld dword ptr $1
524   __asm fistp i
525 // CHECK: fistp dword ptr $0
526 // CHECK: "=*m,*m,~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}}, float* %{{.*}})
527 }
528 
529 void t41(unsigned short a) {
530 // CHECK-LABEL: define void @t41(i16 zeroext %a)
531   __asm mov cs, a;
532 // CHECK: mov cs, word ptr $0
533   __asm mov ds, a;
534 // CHECK: mov ds, word ptr $1
535   __asm mov es, a;
536 // CHECK: mov es, word ptr $2
537   __asm mov fs, a;
538 // CHECK: mov fs, word ptr $3
539   __asm mov gs, a;
540 // CHECK: mov gs, word ptr $4
541   __asm mov ss, a;
542 // CHECK: mov ss, word ptr $5
543 // CHECK: "*m,*m,*m,*m,*m,*m,~{dirflag},~{fpsr},~{flags}"(i16* {{.*}}, i16* {{.*}}, i16* {{.*}}, i16* {{.*}}, i16* {{.*}}, i16* {{.*}})
544 }
545 
546 void t42() {
547 // CHECK-LABEL: define void @t42
548   int flags;
549   __asm mov flags, eax
550 // CHECK: mov dword ptr $0, eax
551 // CHECK: "=*m,~{dirflag},~{fpsr},~{flags}"(i32* %flags)
552 }
553 
554 void t43() {
555 // CHECK-LABEL: define void @t43
556   C strct;
557 // Work around PR20368: These should be single line blocks
558  __asm { mov eax, 4[strct.c1] }
559 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
560   __asm { mov eax, 4[strct.c3 + 4] }
561 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
562   __asm { mov eax, 8[strct.c2.a + 4 + 32*2 - 4] }
563 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$72$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
564   __asm { mov eax, 12[4 + strct.c2.b] }
565 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$16$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
566   __asm { mov eax, 4[4 + strct.c4.b2.b + 4] }
567 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$12$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
568   __asm { mov eax, 4[64 + strct.c1 + (2*32)] }
569 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$132$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
570   __asm { mov eax, 4[64 + strct.c2.a - 2*32] }
571 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
572   __asm { mov eax, [strct.c4.b1 + 4] }
573 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
574   __asm { mov eax, [strct.c4.b2.a + 4 + 32*2 - 4] }
575 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$64$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
576   __asm { mov eax, [4 + strct.c1] }
577 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$4$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
578   __asm { mov eax, [4 + strct.c2.b + 4] }
579 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$8$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
580   __asm { mov eax, [64 + strct.c3 + (2*32)] }
581 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $$128$0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
582   __asm { mov eax, [64 + strct.c4.b2.b - 2*32] }
583 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr $0", "*m,~{eax},~{dirflag},~{fpsr},~{flags}"(i32* %{{.*}})
584 }
585 
586 void call_clobber() {
587   __asm call t41
588   // CHECK-LABEL: define void @call_clobber
589   // CHECK: call void asm sideeffect inteldialect "call dword ptr $0", "*m,~{dirflag},~{fpsr},~{flags}"(void (i16)* @t41)
590 }
591 
592 void xgetbv() {
593   __asm xgetbv
594 }
595 // CHECK-LABEL: define void @xgetbv()
596 // CHECK: call void asm sideeffect inteldialect "xgetbv", "~{eax},~{edx},~{dirflag},~{fpsr},~{flags}"()
597 
598 void label1() {
599   __asm {
600     label:
601     jmp label
602   }
603   // CHECK-LABEL: define void @label1()
604   // CHECK: call void asm sideeffect inteldialect "{{.*}}__MSASMLABEL_.${:uid}__label:\0A\09jmp {{.*}}__MSASMLABEL_.${:uid}__label", "~{dirflag},~{fpsr},~{flags}"() [[ATTR1:#[0-9]+]]
605 }
606 
607 void label2() {
608   __asm {
609     jmp label
610     label:
611   }
612   // CHECK-LABEL: define void @label2
613   // CHECK: call void asm sideeffect inteldialect "jmp {{.*}}__MSASMLABEL_.${:uid}__label\0A\09{{.*}}__MSASMLABEL_.${:uid}__label:", "~{dirflag},~{fpsr},~{flags}"()
614 }
615 
616 void label3() {
617   __asm {
618     label:
619     mov eax, label
620   }
621   // CHECK-LABEL: define void @label3
622   // CHECK: call void asm sideeffect inteldialect "{{.*}}__MSASMLABEL_.${:uid}__label:\0A\09mov eax, {{.*}}__MSASMLABEL_.${:uid}__label", "~{eax},~{dirflag},~{fpsr},~{flags}"()
623 }
624 
625 void label4() {
626   __asm {
627     label:
628     mov eax, [label]
629   }
630   // CHECK-LABEL: define void @label4
631   // CHECK: call void asm sideeffect inteldialect "{{.*}}__MSASMLABEL_.${:uid}__label:\0A\09mov eax, {{.*}}__MSASMLABEL_.${:uid}__label", "~{eax},~{dirflag},~{fpsr},~{flags}"()
632 }
633 
634 void label5() {
635   __asm {
636     jmp dollar_label$
637     dollar_label$:
638   }
639   // CHECK-LABEL: define void @label5
640   // CHECK: call void asm sideeffect inteldialect "jmp {{.*}}__MSASMLABEL_.${:uid}__dollar_label$$\0A\09{{.*}}__MSASMLABEL_.${:uid}__dollar_label$$:", "~{dirflag},~{fpsr},~{flags}"()
641 }
642 
643 void label6(){
644   __asm {
645       jmp short label
646     label:
647   }
648   // CHECK-LABEL: define void @label6
649   // CHECK: call void asm sideeffect inteldialect "jmp {{.*}}__MSASMLABEL_.${:uid}__label\0A\09{{.*}}__MSASMLABEL_.${:uid}__label:", "~{dirflag},~{fpsr},~{flags}"()
650 }
651 
652 typedef union _LARGE_INTEGER {
653   struct {
654     unsigned int LowPart;
655     unsigned int  HighPart;
656   };
657   struct {
658     unsigned int LowPart;
659     unsigned int  HighPart;
660   } u;
661   unsigned long long QuadPart;
662 } LARGE_INTEGER, *PLARGE_INTEGER;
663 
664 int test_indirect_field(LARGE_INTEGER LargeInteger) {
665     __asm mov     eax, LargeInteger.LowPart
666 }
667 // CHECK-LABEL: define i32 @test_indirect_field(
668 // CHECK: call i32 asm sideeffect inteldialect "mov eax, dword ptr $1",
669 
670 // MS ASM containing labels must not be duplicated (PR23715).
671 // CHECK: attributes [[ATTR1]] = {
672 // CHECK-NOT: noduplicate
673 // CHECK-SAME: }{{$}}
674