1 // RUN: clang-cc -triple i386-unknown-unknown -emit-llvm %s -o %t &&
2 void t1(int len) {
3   __asm__ volatile("" : "=&r"(len), "+&r"(len));
4 }
5 
6 void t2(unsigned long long t)  {
7   __asm__ volatile("" : "+m"(t));
8 }
9 
10 void t3(unsigned char *src, unsigned long long temp) {
11   __asm__ volatile("" : "+m"(temp), "+r"(src));
12 }
13 
14 void t4() {
15   unsigned long long a;
16   struct reg { unsigned long long a, b; } b;
17 
18 	__asm__ volatile ("":: "m"(a), "m"(b));
19 }
20 
21 // PR3417
22 void t5(int i) {
23   asm("nop" : "=r"(i) : "0"(t5));
24 }
25 
26 // PR3641
27 void t6(void) {
28   __asm__ volatile("" : : "i" (t6));
29 }
30 
31 // RUN: grep "T7 NAMED: \$1" %t &&
32 void t7(int a) {
33   __asm__ volatile("T7 NAMED: %[input]" : "+r"(a): [input] "i" (4));
34 }
35 
36 // RUN: grep "T8 NAMED MODIFIER: \${0:c}" %t &&
37 void t8() {
38   __asm__ volatile("T8 NAMED MODIFIER: %c[input]" :: [input] "i" (4));
39 }
40 
41 // PR3682
42 unsigned t9(unsigned int a) {
43   asm("bswap %0 %1" : "+r" (a));
44   return a;
45 }
46 
47 // PR3908
48 // RUN: grep "PR3908 \$1 \$3 \$2 \$0" %t
49 void t10(int r) {
50   __asm__("PR3908 %[lf] %[xx] %[li] %[r]" : [r] "+r" (r) : [lf] "mx" (0), [li] "mr" (0), [xx] "x" ((double)(0)));
51 }
52 
53 
54 // PR3373
55 unsigned t11(signed char input) {
56   unsigned  output;
57   __asm__("xyz"
58           : "=a" (output)
59           : "0" (input));
60   return output;
61 }
62 
63 // PR3373
64 unsigned char t12(unsigned input) {
65   unsigned char output;
66   __asm__("xyz"
67           : "=a" (output)
68           : "0" (input));
69   return output;
70 }
71 
72 unsigned char t13(unsigned input) {
73   unsigned char output;
74   __asm__("xyz %1"
75           : "=a" (output)
76           : "0" (input));
77   return output;
78 }
79 
80 struct large {
81   int x[1000];
82 };
83 
84 unsigned long t15(int x, struct large *P) {
85   __asm__("xyz "
86           : "=r" (x)
87           : "m" (*P), "0" (x));
88   return x;
89 }
90 
91 
92 
93 
94 // bitfield destination of an asm.
95 struct S {
96   int a : 4;
97 };
98 
99 void t14(struct S *P) {
100   __asm__("abc %0" : "=r"(P->a) );
101 }
102 
103 
104