#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 main() {
  int i = 123;
  for (i = 0; i < 10; i++) {
    int j = 0;
    while (j < 10) {
      printf("1\n");
      j++;
    }
    while (j < 20) {
      printf("2\n");
      j++;
    }
  }
  printf("3\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x7b,-0x8(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    119e <main+0x8e>
movl   $0x0,-0xc(%rbp)
cmpl   $0xa,-0xc(%rbp)
jge    1162 <main+0x52>
lea    0xeb1(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    113e <main+0x2e>
jmp    1167 <main+0x57>
cmpl   $0x14,-0xc(%rbp)
jge    118b <main+0x7b>
lea    0xe8b(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1167 <main+0x57>
jmp    1190 <main+0x80>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    112d <main+0x1d>
lea    0xe61(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
mov    $0xa,%ebp
lea    0xee4(%rip),%r14
lea    0xedb(%rip),%rbx
nopw   0x0(%rax,%rax,1)
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
add    $0xffffffff,%ebp
jne    1130 <main+0x20>
lea    0xe20(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"1\0A\00"
@.str.1 = [3 x i8] c"2\0A\00"
@.str.2 = [3 x i8] c"3\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 123, i32* %2
store i32 0, i32* %2
br label %4
4: ; preds = %24, %0
%5 = load i32, i32* %2
%6 = icmp slt i32 %5, 10
br i1 %6, label %7, label %27
7: ; preds = %4
store i32 0, i32* %3
br label %8
8: ; preds = %11, %7
%9 = load i32, i32* %3
%10 = icmp slt i32 %9, 10
br i1 %10, label %11, label %15
11: ; preds = %8
%12 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%13 = load i32, i32* %3
%14 = add nsw i32 %13, 1
store i32 %14, i32* %3
br label %8
15: ; preds = %8
br label %16
16: ; preds = %19, %15
%17 = load i32, i32* %3
%18 = icmp slt i32 %17, 20
br i1 %18, label %19, label %23
19: ; preds = %16
%20 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%21 = load i32, i32* %3
%22 = add nsw i32 %21, 1
store i32 %22, i32* %3
br label %16
23: ; preds = %16
br label %24
24: ; preds = %23
%25 = load i32, i32* %2
%26 = add nsw i32 %25, 1
store i32 %26, i32* %2
br label %4
27: ; preds = %4
%28 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@str = [2 x i8] c"3\00"
@str.3 = [2 x i8] c"2\00"
@str.4 = [2 x i8] c"1\00"
define i32 @main() {
br label %1
1: ; preds = %0, %1
%2 = phi i32 [ 0, %0 ], [ %23, %1 ]
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%12 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.4, i64 0, i64 0))
%13 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%14 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%16 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%17 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%18 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%19 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%20 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%21 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%22 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str.3, i64 0, i64 0))
%23 = add nuw nsw i32 %2, 1
%24 = icmp eq i32 %23, 10
br i1 %24, label %25, label %1
25: ; preds = %1
%26 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
ret i32 0
}