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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
void t1(int len) {
__asm__ volatile("" : "=&r"(len), "+&r"(len));
}
void t2(unsigned long long t) {
__asm__ volatile("" : "+m"(t));
}
void t3(unsigned char *src, unsigned long long temp) {
__asm__ volatile("" : "+m"(temp), "+r"(src));
}
void t4() {
unsigned long long a;
struct reg { unsigned long long a, b; } b;
__asm__ volatile ("":: "m"(a), "m"(b));
}
// PR3417
void t5(int i) {
asm("nop" : "=r"(i) : "0"(t5));
}
// PR3641
void t6(void) {
__asm__ volatile("" : : "i" (t6));
}
void t7(int a) {
__asm__ volatile("T7 NAMED: %[input]" : "+r"(a): [input] "i" (4));
// CHECK: @t7(i32
// CHECK: T7 NAMED: $1
}
void t8() {
__asm__ volatile("T8 NAMED MODIFIER: %c[input]" :: [input] "i" (4));
// CHECK: @t8()
// CHECK: T8 NAMED MODIFIER: ${0:c}
}
// PR3682
unsigned t9(unsigned int a) {
asm("bswap %0 %1" : "+r" (a));
return a;
}
// PR3908
void t10(int r) {
__asm__("PR3908 %[lf] %[xx] %[li] %[r]" : [r] "+r" (r) : [lf] "mx" (0), [li] "mr" (0), [xx] "x" ((double)(0)));
// CHECK: @t10(
// CHECK:PR3908 $1 $3 $2 $0
}
// PR3373
unsigned t11(signed char input) {
unsigned output;
__asm__("xyz"
: "=a" (output)
: "0" (input));
return output;
}
// PR3373
unsigned char t12(unsigned input) {
unsigned char output;
__asm__("xyz"
: "=a" (output)
: "0" (input));
return output;
}
unsigned char t13(unsigned input) {
unsigned char output;
__asm__("xyz %1"
: "=a" (output)
: "0" (input));
return output;
}
struct large {
int x[1000];
};
unsigned long t15(int x, struct large *P) {
__asm__("xyz "
: "=r" (x)
: "m" (*P), "0" (x));
return x;
}
// bitfield destination of an asm.
struct S {
int a : 4;
};
void t14(struct S *P) {
__asm__("abc %0" : "=r"(P->a) );
}
// PR4938
int t16() {
int a,b;
asm ( "nop;"
:"=%c" (a)
: "r" (b)
);
return 0;
}
// PR6475
void t17() {
int i;
__asm__ ( "nop": "=m"(i));
// CHECK: @t17()
// CHECK: call void asm "nop", "=*m,
}
// <rdar://problem/6841383>
int t18(unsigned data) {
int a, b;
asm("xyz" :"=a"(a), "=d"(b) : "a"(data));
return a + b;
// CHECK: t18(i32
// CHECK: = call {{.*}}asm "xyz"
// CHECK-NEXT: extractvalue
// CHECK-NEXT: extractvalue
}
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