asm-goto.cpp
1.75 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s
int zoo ()
{
int x,cond,*e;
// expected-error@+1 {{expected ')'}}
asm ("mov %[e], %[e]" : : [e] "rm" (*e)::a)
// expected-error@+1 {{'asm goto' cannot have output constraints}}
asm goto ("decl %0; jnz %l[a]" :"=r"(x): "m"(x) : "memory" : a);
// expected-error@+1 {{expected identifie}}
asm goto ("decl %0;" :: "m"(x) : "memory" : );
// expected-error@+1 {{expected ':'}}
asm goto ("decl %0;" :: "m"(x) : "memory" );
// expected-error@+1 {{use of undeclared label 'x'}}
asm goto ("decl %0;" :: "m"(x) : "memory" :x);
// expected-error@+1 {{use of undeclared label 'b'}}
asm goto ("decl %0;" :: "m"(x) : "memory" :b);
// expected-error@+1 {{invalid operand number in inline asm string}}
asm goto ("testl %0, %0; jne %l3;" :: "r"(cond)::label_true, loop);
// expected-error@+1 {{unknown symbolic operand name in inline assembly string}}
asm goto ("decl %0; jnz %l[b]" :: "m"(x) : "memory" : a);
label_true:
loop:
a:
return 0;
}
int a, b, c, d, e, f, g, h, i, j, k, l;
void
fgoto1 (void)
{
__asm__ volatile goto (""
:: [a] "r" (a), [b] "r" (b), [c] "r" (c), [d] "r" (d),
[e] "r" (e), [f] "r" (f), [g] "r" (g), [h] "r" (h),
[i] "r" (i), [j] "r" (j), [k] "r" (k), [l] "r" (l)
::lab1,lab2);
lab1: return;
lab2: return;
}
void
fgoto2 (void)
{
__asm__ volatile goto (""
:: [a] "r,m" (a), [b] "r,m" (b), [c] "r,m" (c), [d] "r,m" (d),
[e] "r,m" (e), [f] "r,m" (f), [g] "r,m" (g), [h] "r,m" (h),
[i] "r,m" (i), [j] "r,m" (j), [k] "r,m" (k), [l] "r,m" (l)
:: lab);
lab: return;
}