File: pr41027.c

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (20 lines) | stat: -rw-r--r-- 508 bytes parent folder | download | duplicates (25) 
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);
}