#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 /*<<< orphan*/);
int fibonacci(int);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  int n;
  int i;
  if (argc != 2) {
    printf("Number required!\n");
  }
  n = atoi(argv[1]);
  for (i = 0; i <= n; i++) {
    printf("%d ", fibonacci(i));
  }
  printf("\n");
  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)
cmpl   $0x2,-0x8(%rbp)
je     116e <main+0x2e>
lea    0xe99(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x14(%rbp)
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jg     11b7 <main+0x77>
mov    -0x18(%rbp),%edi
call   1040 <fibonacci@plt>
mov    %eax,%esi
lea    0xe70(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    1185 <main+0x45>
lea    0xe52(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %edi,%edi
call   1060 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
je     1178 <main+0x18>
lea    0xe91(%rip),%rdi
call   1040 <puts@plt>
mov    0x8(%rbx),%rdi
call   1070 <atoi@plt>
test   %eax,%eax
js     11ba <main+0x5a>
mov    %eax,%ebx
add    $0x1,%ebx
lea    0xe6f(%rip),%r14
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    %ebp,%edi
call   1060 <fibonacci@plt>
mov    %r14,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%ebp
cmp    %ebp,%ebx
jne    11a0 <main+0x40>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %edi,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@.str = [18 x i8] c"Number required!\0A\00"
@.str.1 = [4 x i8] c"%d \00"
@.str.2 = [2 x i8] c"\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 2
br i1 %9, label %10, label %12
10: ; preds = %2
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
br label %12
12: ; preds = %10, %2
%13 = load i8**, i8*** %5
%14 = getelementptr inbounds i8*, i8** %13, i64 1
%15 = load i8*, i8** %14
%16 = call i32 @atoi(i8* %15)
store i32 %16, i32* %6
store i32 0, i32* %7
br label %17
17: ; preds = %25, %12
%18 = load i32, i32* %7
%19 = load i32, i32* %6
%20 = icmp sle i32 %18, %19
br i1 %20, label %21, label %28
21: ; preds = %17
%22 = load i32, i32* %7
%23 = call i32 @fibonacci(i32 %22)
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %23)
br label %25
25: ; preds = %21
%26 = load i32, i32* %7
%27 = add nsw i32 %26, 1
store i32 %27, i32* %7
br label %17
28: ; preds = %17
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%30 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str.1 = [4 x i8] c"%d \00"
@str = [17 x i8] c"Number required!\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %6, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str, i64 0, i64 0))
br label %6
6: ; preds = %4, %2
%7 = getelementptr inbounds i8*, i8** %1, i64 1
%8 = load i8*, i8** %7
%9 = tail call i32 @atoi(i8* %8)
%10 = icmp slt i32 %9, 0
br i1 %10, label %17, label %11
11: ; preds = %6, %11
%12 = phi i32 [ %15, %11 ], [ 0, %6 ]
%13 = tail call i32 @fibonacci(i32 %12)
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %13)
%15 = add nuw i32 %12, 1
%16 = icmp eq i32 %12, %9
br i1 %16, label %17, label %11
17: ; preds = %11, %6
%18 = tail call i32 @putchar(i32 10)
%19 = tail call i32 @exit(i32 0)
unreachable
}