1 // RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -O0 -fms-extensions -fenable-experimental-ms-inline-asm -w -emit-llvm -o - | FileCheck %s
2 
3 void t1() {
4 // CHECK: @t1
5 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
6 // CHECK: ret void
7   __asm {}
8 }
9 
10 void t2() {
11 // CHECK: @t2
12 // CHECK: call void asm sideeffect inteldialect "nop", "~{dirflag},~{fpsr},~{flags}"() nounwind
13 // CHECK: call void asm sideeffect inteldialect "nop", "~{dirflag},~{fpsr},~{flags}"() nounwind
14 // CHECK: call void asm sideeffect inteldialect "nop", "~{dirflag},~{fpsr},~{flags}"() nounwind
15 // CHECK: ret void
16   __asm nop
17   __asm nop
18   __asm nop
19 }
20 
21 void t3() {
22 // CHECK: @t3
23 // CHECK: call void asm sideeffect inteldialect "nop\0A\09nop\0A\09nop", "~{dirflag},~{fpsr},~{flags}"() nounwind
24 // CHECK: ret void
25   __asm nop __asm nop __asm nop
26 }
27 
28 void t4(void) {
29 // CHECK: @t4
30 // CHECK: call void asm sideeffect inteldialect "mov ebx, eax", "~{ebx},~{dirflag},~{fpsr},~{flags}"() nounwind
31 // CHECK: call void asm sideeffect inteldialect "mov ecx, ebx", "~{ecx},~{dirflag},~{fpsr},~{flags}"() nounwind
32 // CHECK: ret void
33   __asm mov ebx, eax
34   __asm mov ecx, ebx
35 }
36 
37 void t5(void) {
38 // CHECK: @t5
39 // CHECK: call void asm sideeffect inteldialect "mov ebx, eax\0A\09mov ecx, ebx", "~{ebx},~{ecx},~{dirflag},~{fpsr},~{flags}"() nounwind
40 // CHECK: ret void
41   __asm mov ebx, eax __asm mov ecx, ebx
42 }
43 
44 void t6(void) {
45   __asm int 0x2c
46 // CHECK: t6
47 // CHECK: call void asm sideeffect inteldialect "int $$0x2c", "~{dirflag},~{fpsr},~{flags}"() nounwind
48 }
49 
50 void t7() {
51   __asm {
52     int 0x2c ; } asm comments are fun! }{
53   }
54   __asm {}
55 // CHECK: t7
56 // CHECK: call void asm sideeffect inteldialect "int $$0x2c", "~{dirflag},~{fpsr},~{flags}"() nounwind
57 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
58 }
59 int t8() {
60   __asm int 3 ; } comments for single-line asm
61   __asm {}
62   __asm int 4
63   return 10;
64 // CHECK: t8
65 // CHECK: call void asm sideeffect inteldialect "int $$3", "~{dirflag},~{fpsr},~{flags}"() nounwind
66 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
67 // CHECK: call void asm sideeffect inteldialect "int $$4", "~{dirflag},~{fpsr},~{flags}"() nounwind
68 // CHECK: ret i32 10
69 }
70 void t9() {
71   __asm {
72     push ebx
73     mov ebx, 0x07
74     pop ebx
75   }
76 // CHECK: t9
77 // CHECK: call void asm sideeffect inteldialect "push ebx\0A\09mov ebx, $$0x07\0A\09pop ebx", "~{ebx},~{dirflag},~{fpsr},~{flags}"() nounwind
78 }
79 
80 unsigned t10(void) {
81   unsigned i = 1, j;
82   __asm {
83     mov eax, i
84     mov j, eax
85   }
86   return j;
87 // CHECK: t10
88 // CHECK: [[I:%[a-zA-Z0-9]+]] = alloca i32, align 4
89 // CHECK: [[J:%[a-zA-Z0-9]+]] = alloca i32, align 4
90 // CHECK: store i32 1, i32* [[I]], align 4
91 // CHECK: call i32 asm sideeffect inteldialect "mov eax, $1\0A\09mov $0, eax", "=r,r,~{eax},~{dirflag},~{fpsr},~{flags}"(i32 %{{.*}}) nounwind
92 // CHECK: [[RET:%[a-zA-Z0-9]+]] = load i32* [[J]], align 4
93 // CHECK: ret i32 [[RET]]
94 }
95 
96 void t11(void) {
97   __asm EVEN
98   __asm ALIGN
99 // CHECK: t11
100 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
101 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
102 }
103 
104 void t12(void) {
105   __asm {
106     _emit 0x4A
107     _emit 0x43
108     _emit 0x4B
109   }
110 // CHECK: t12
111 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
112 }
113 
114 void t13(void) {
115   unsigned arr[10];
116   __asm LENGTH arr ; sizeof(arr)/sizeof(arr[0])
117   __asm SIZE arr   ; sizeof(arr)
118   __asm TYPE arr   ; sizeof(arr[0])
119 // CHECK: t13
120 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
121 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
122 // CHECK: call void asm sideeffect inteldialect "", "~{dirflag},~{fpsr},~{flags}"() nounwind
123 }
124 
125 void t14(void) {
126   __asm mov eax, 1
127 // CHECK: t14
128 // CHECK: call void asm sideeffect inteldialect "mov eax, $$1", "~{eax},~{dirflag},~{fpsr},~{flags}"() nounwind
129 }
130 
131 void t15(void) {
132   __asm mov eax, DWORD PTR [eax]
133 // CHECK: t15
134 // CHECK: call void asm sideeffect inteldialect "mov eax, DWORD PTR [eax]", "~{eax},~{dirflag},~{fpsr},~{flags}"() nounwind
135 }
136 
137 void t16(unsigned long long V) {
138   __asm mov eax, DWORD PTR [V]
139 // CHECK: t16
140 // CHECK: call void asm sideeffect inteldialect "mov eax, DWORD PTR [$0]", "r,~{eax},~{dirflag},~{fpsr},~{flags}"(i64 %{{.*}}) nounwind
141 }
142 
143 void t17(void) {
144   __asm mov eax, dword ptr [eax]
145 // CHECK: t17
146 // CHECK: call void asm sideeffect inteldialect "mov eax, dword ptr [eax]", "~{eax},~{dirflag},~{fpsr},~{flags}"() nounwind
147 }
148 
149 void t18(void) {
150   __asm mov dword ptr [eax], eax
151 // CHECK: t18
152 // CHECK: call void asm sideeffect inteldialect "mov dword ptr [eax], eax", "~{dirflag},~{fpsr},~{flags}"() nounwind
153 }
154 
155 unsigned t19(void) {
156   unsigned i = 1, j, l = 1, m;
157   __asm {
158     mov eax, i
159     mov j, eax
160     mov eax, l
161     mov m, eax
162   }
163   return j + m;
164 // CHECK: t19
165 // CHECK: call { i32, i32 } asm sideeffect inteldialect "mov eax, $2\0A\09mov $0, eax\0A\09mov eax, $3\0A\09mov $1, eax", "=r,=r,r,r,~{eax},~{dirflag},~{fpsr},~{flags}"(i32 %{{.*}}, i32 %{{.*}}) nounwind
166 }
167