#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 /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int fib1 = 0, fib2 = 1, fib, n, i;
  printf("Enter the numbers of number from series you want to see(should be "
         "less than 45): ");
  scanf("%d", &n);
  printf("%d ", fib1);
  printf("%d ", fib2);
  for (i = 0; i < n; i++) {
    fib = fib1 + fib2;
    printf("%d ", fib);
    fib1 = fib2;
    fib2 = fib;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x1,-0xc(%rbp)
lea    0xebc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf00(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%esi
lea    0xef0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%esi
lea    0xedf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11c4 <main+0xa4>
mov    -0x8(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%esi
lea    0xeb2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
mov    %eax,-0x8(%rbp)
mov    -0x10(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    1184 <main+0x64>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
lea    0xed2(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xf16(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
lea    0xf08(%rip),%rbp
mov    %rbp,%rdi
xor    %esi,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    $0x1,%r15d
mov    %rbp,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1030 <printf@plt>
cmpl   $0x0,0x4(%rsp)
jle    11a0 <main+0x80>
lea    0xed9(%rip),%r14
xor    %ebx,%ebx
xor    %eax,%eax
mov    %eax,%ebp
add    %r15d,%ebp
mov    %r14,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%ebx
mov    %r15d,%eax
mov    %ebp,%r15d
cmp    0x4(%rsp),%ebx
jl     1180 <main+0x60>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [82 x i8] c"Enter the numbers of number from series you want to see(should be less than 45): \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 1, i32* %3
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([82 x i8], [82 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %5)
%9 = load i32, i32* %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %9)
%11 = load i32, i32* %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %11)
store i32 0, i32* %6
br label %13
13: ; preds = %25, %0
%14 = load i32, i32* %6
%15 = load i32, i32* %5
%16 = icmp slt i32 %14, %15
br i1 %16, label %17, label %28
17: ; preds = %13
%18 = load i32, i32* %2
%19 = load i32, i32* %3
%20 = add nsw i32 %18, %19
store i32 %20, i32* %4
%21 = load i32, i32* %4
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %21)
%23 = load i32, i32* %3
store i32 %23, i32* %2
%24 = load i32, i32* %4
store i32 %24, i32* %3
br label %25
25: ; preds = %17
%26 = load i32, i32* %6
%27 = add nsw i32 %26, 1
store i32 %27, i32* %6
br label %13
28: ; preds = %13
ret i32 0
}

LLVM IR (-O2):
@.str = [82 x i8] c"Enter the numbers of number from series you want to see(should be less than 45): \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d \00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([82 x i8], [82 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 0)
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 1)
%7 = load i32, i32* %1
%8 = icmp sgt i32 %7, 0
br i1 %8, label %9, label %18
9: ; preds = %0, %9
%10 = phi i32 [ %15, %9 ], [ 0, %0 ]
%11 = phi i32 [ %12, %9 ], [ 0, %0 ]
%12 = phi i32 [ %13, %9 ], [ 1, %0 ]
%13 = add nsw i32 %11, %12
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %13)
%15 = add nuw nsw i32 %10, 1
%16 = load i32, i32* %1
%17 = icmp slt i32 %15, %16
br i1 %17, label %9, label %18
18: ; preds = %9, %0
ret i32 0
}