#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() {
  int range, next, prev1, prev2;
  printf("%s", "Enter the range number: ");
  scanf("%d", &range);
  prev1 = 1;
  prev2 = 0;
  next = 0;
  do {
    printf("%d\t", next);
    next = prev1 + prev2;
    prev1 = prev2;
    prev2 = next;
  } while (next < range);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    0xec6(%rip),%rsi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed1(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x1,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0xc(%rbp),%esi
lea    0xeac(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    -0x14(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x14(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0xc(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jl     1169 <main+0x49>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
lea    0xecd(%rip),%rsi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xed8(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1040 <scanf@plt>
mov    $0x1,%ebx
lea    0xec5(%rip),%r14
xor    %ebp,%ebp
nopl   0x0(%rax)
mov    %r14,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %ebx,%eax
add    %ebp,%eax
mov    %ebp,%ebx
mov    %eax,%ebp
cmp    0xc(%rsp),%eax
jl     1160 <main+0x40>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [25 x i8] c"Enter the range number: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [4 x i8] c"%d\09\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %2)
store i32 1, i32* %4
store i32 0, i32* %5
store i32 0, i32* %3
br label %8
8: ; preds = %16, %0
%9 = load i32, i32* %3
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %9)
%11 = load i32, i32* %4
%12 = load i32, i32* %5
%13 = add nsw i32 %11, %12
store i32 %13, i32* %3
%14 = load i32, i32* %5
store i32 %14, i32* %4
%15 = load i32, i32* %3
store i32 %15, i32* %5
br label %16
16: ; preds = %8
%17 = load i32, i32* %3
%18 = load i32, i32* %2
%19 = icmp slt i32 %17, %18
br i1 %19, label %8, label %20
20: ; preds = %16
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
@.str.1 = [25 x i8] c"Enter the range number: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [4 x i8] c"%d\09\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
br label %5
5: ; preds = %5, %0
%6 = phi i32 [ 1, %0 ], [ %7, %5 ]
%7 = phi i32 [ 0, %0 ], [ %9, %5 ]
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = add nsw i32 %7, %6
%10 = load i32, i32* %1
%11 = icmp slt i32 %9, %10
br i1 %11, label %5, label %12
12: ; preds = %5
ret i32 0
}