1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
// REQUIRES: x86-registered-target
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S -O2 -o - %s | FileCheck %s
// CHECK-LABEL: f:
// CHECK: movl $1, %eax
// CHECK-NEXT: #APP
// CHECK-NEXT: outl %eax, $1
// CHECK-NEXT: #NO_APP
static inline void pr41027(unsigned a, unsigned b) {
if (__builtin_constant_p(a)) {
__asm__ volatile("outl %0,%w1" : : "a"(b), "n"(a));
} else {
__asm__ volatile("outl %0,%w1" : : "a"(b), "d"(a));
}
}
void f(unsigned port) {
pr41027(1, 1);
}
|
