#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 */

/* Variables and functions */
int atoi(char *);
int /*<<< orphan*/ exit(int);
int getpid();
int getppid();
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  int i;
  if (argv[1] == NULL) {
    printf("argument missing\n");
    exit(-1);
  } else
    i = atoi(argv[1]);
  printf("\n... ich bin das Kind %d mit i %d, ", getpid(), i);
  printf("meine Eltern sind %d \n", getppid());
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
cmpq   $0x0,0x8(%rax)
jne    118d <main+0x3d>
lea    0xe84(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0xffffffff,%edi
call   1070 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    $0x0,%al
call   1030 <getpid@plt>
mov    %eax,%esi
mov    -0x14(%rbp),%edx
lea    0xe62(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1060 <getppid@plt>
mov    %eax,%esi
lea    0xe6f(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %edi,%edi
call   1070 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    0x8(%rsi),%rdi
test   %rdi,%rdi
jne    1180 <main+0x20>
lea    0xeca(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%edi
call   1080 <exit@plt>
call   1060 <atoi@plt>
mov    %eax,%ebx
xor    %eax,%eax
call   1040 <getpid@plt>
lea    0xe6b(%rip),%rdi
mov    %eax,%esi
mov    %ebx,%edx
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
call   1070 <getppid@plt>
lea    0xe76(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %edi,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@.str = [18 x i8] c"argument missing\0A\00"
@.str.1 = [36 x i8] c"\0A... ich bin das Kind %d mit i %d, \00"
@.str.2 = [23 x i8] c"meine Eltern sind %d \0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i8**, i8*** %5
%8 = getelementptr inbounds i8*, i8** %7, i64 1
%9 = load i8*, i8** %8
%10 = icmp eq i8* %9, null
br i1 %10, label %11, label %14
11: ; preds = %2
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%13 = call i32 @exit(i32 -1)
unreachable
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i32 @atoi(i8* %17)
store i32 %18, i32* %6
br label %19
19: ; preds = %14
%20 = call i32 (...) @getpid()
%21 = load i32, i32* %6
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.1, i64 0, i64 0), i32 %20, i32 %21)
%23 = call i32 (...) @getppid()
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %23)
%25 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str.1 = [36 x i8] c"\0A... ich bin das Kind %d mit i %d, \00"
@.str.2 = [23 x i8] c"meine Eltern sind %d \0A\00"
@str = [17 x i8] c"argument missing\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = getelementptr inbounds i8*, i8** %1, i64 1
%4 = load i8*, i8** %3
%5 = icmp eq i8* %4, null
br i1 %5, label %6, label %9
6: ; preds = %2
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str, i64 0, i64 0))
%8 = tail call i32 @exit(i32 -1)
unreachable
9: ; preds = %2
%10 = tail call i32 @atoi(i8* %4)
%11 = tail call i32 (...) @getpid()
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @.str.1, i64 0, i64 0), i32 %11, i32 %10)
%13 = tail call i32 (...) @getppid()
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %13)
%15 = tail call i32 @exit(i32 0)
unreachable
}