#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */
struct utmp {
  char *ut_user;
  char *ut_line;
  char *ut_host;
  int /*<<< orphan*/ ut_time;
};

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
extern void show_info(struct utmp *utmp_record) {
  printf("%-8.8s", utmp_record->ut_user);
  printf(" ");
  printf("%-8.8s", utmp_record->ut_line);
  printf(" ");
  printf("%10ld", utmp_record->ut_time);
  printf(" ");
  printf("(%s)", utmp_record->ut_host);
  printf("\n");
}


x86 assembly (clang, -O0):
<show_info>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    (%rax),%rsi
lea    0xed6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    0x8(%rax),%rsi
lea    0xeb2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeab(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    0x18(%rax),%esi
lea    0xe98(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe88(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
mov    0x10(%rax),%rsi
lea    0xe7a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe71(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<show_info>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%rbx
mov    (%rdi),%rsi
lea    0xecf(%rip),%r14
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x20,%edi
call   1030 <putchar@plt>
mov    0x8(%rbx),%rsi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x20,%edi
call   1030 <putchar@plt>
mov    0x18(%rbx),%esi
lea    0xea0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x20,%edi
call   1030 <putchar@plt>
mov    0x10(%rbx),%rsi
lea    0xe8a(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
add    $0x8,%rsp
pop    %rbx
pop    %r14
jmp    1030 <putchar@plt>

LLVM IR (-O0):
%struct.utmp = type { i8*, i8*, i8*, i32 }
@.str = [7 x i8] c"%-8.8s\00"
@.str.1 = [2 x i8] c" \00"
@.str.2 = [6 x i8] c"%10ld\00"
@.str.3 = [5 x i8] c"(%s)\00"
@.str.4 = [2 x i8] c"\0A\00"
define void @show_info(%struct.utmp* %0) {
%2 = alloca %struct.utmp*
store %struct.utmp* %0, %struct.utmp** %2
%3 = load %struct.utmp*, %struct.utmp** %2
%4 = getelementptr inbounds %struct.utmp, %struct.utmp* %3, i32 0, i32 0
%5 = load i8*, i8** %4
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %5)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%8 = load %struct.utmp*, %struct.utmp** %2
%9 = getelementptr inbounds %struct.utmp, %struct.utmp* %8, i32 0, i32 1
%10 = load i8*, i8** %9
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %10)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%13 = load %struct.utmp*, %struct.utmp** %2
%14 = getelementptr inbounds %struct.utmp, %struct.utmp* %13, i32 0, i32 3
%15 = load i32, i32* %14
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 %15)
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%18 = load %struct.utmp*, %struct.utmp** %2
%19 = getelementptr inbounds %struct.utmp, %struct.utmp* %18, i32 0, i32 2
%20 = load i8*, i8** %19
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0), i8* %20)
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
%struct.utmp = type { i8*, i8*, i8*, i32 }
@.str = [7 x i8] c"%-8.8s\00"
@.str.2 = [6 x i8] c"%10ld\00"
@.str.3 = [5 x i8] c"(%s)\00"
define void @show_info(%struct.utmp* nocapture %0) {
%2 = getelementptr inbounds %struct.utmp, %struct.utmp* %0, i64 0, i32 0
%3 = load i8*, i8** %2
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = tail call i32 @putchar(i32 32)
%6 = getelementptr inbounds %struct.utmp, %struct.utmp* %0, i64 0, i32 1
%7 = load i8*, i8** %6
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %7)
%9 = tail call i32 @putchar(i32 32)
%10 = getelementptr inbounds %struct.utmp, %struct.utmp* %0, i64 0, i32 3
%11 = load i32, i32* %10
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i32 %11)
%13 = tail call i32 @putchar(i32 32)
%14 = getelementptr inbounds %struct.utmp, %struct.utmp* %0, i64 0, i32 2
%15 = load i8*, i8** %14
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0), i8* %15)
%17 = tail call i32 @putchar(i32 10)
ret void
}