#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 n, i;
  printf("Enter n: ");
  scanf("%d", &n);
  for (i = 1; i <= n; i++) {
    if (i == n) {
      printf("%d\n", i);
      break;
    }
    printf("%d ", i);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec6(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x1,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     11a1 <main+0x81>
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jne    1182 <main+0x62>
mov    -0xc(%rbp),%esi
lea    0xe97(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11a1 <main+0x81>
mov    -0xc(%rbp),%esi
lea    0xe85(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1154 <main+0x34>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
lea    0xed6(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xed2(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jle    118b <main+0x6b>
lea    0xec0(%rip),%rbx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
add    $0x1,%ebp
cmp    %esi,%ebp
je     117d <main+0x5d>
mov    %rbx,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x4(%rsp),%esi
cmp    %esi,%ebp
jl     1160 <main+0x40>
jmp    118b <main+0x6b>
lea    0xe89(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [10 x i8] c"Enter n: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
@.str.3 = [4 x i8] c"%d \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
store i32 1, i32* %3
br label %6
6: ; preds = %20, %0
%7 = load i32, i32* %3
%8 = load i32, i32* %2
%9 = icmp sle i32 %7, %8
br i1 %9, label %10, label %23
10: ; preds = %6
%11 = load i32, i32* %3
%12 = load i32, i32* %2
%13 = icmp eq i32 %11, %12
br i1 %13, label %14, label %17
14: ; preds = %10
%15 = load i32, i32* %3
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %15)
br label %23
17: ; preds = %10
%18 = load i32, i32* %3
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %18)
br label %20
20: ; preds = %17
%21 = load i32, i32* %3
%22 = add nsw i32 %21, 1
store i32 %22, i32* %3
br label %6
23: ; preds = %14, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"Enter n: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
@.str.3 = [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 ([10 x i8], [10 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 = load i32, i32* %1
%6 = icmp slt i32 %5, 1
br i1 %6, label %18, label %7
7: ; preds = %0, %13
%8 = phi i32 [ %16, %13 ], [ %5, %0 ]
%9 = phi i32 [ %15, %13 ], [ 1, %0 ]
%10 = icmp eq i32 %9, %8
br i1 %10, label %11, label %13
11: ; preds = %7
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %8)
br label %18
13: ; preds = %7
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %9)
%15 = add nuw nsw i32 %9, 1
%16 = load i32, i32* %1
%17 = icmp slt i32 %9, %16
br i1 %17, label %7, label %18
18: ; preds = %13, %0, %11
ret i32 0
}