#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, j;
  for (i = 1; i <= 5; i++) {
    for (j = 1; j <= i; j++) {
      printf("x");
    }
    printf("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0x8(%rbp)
cmpl   $0x5,-0x8(%rbp)
jg     1177 <main+0x67>
movl   $0x1,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     115d <main+0x4d>
lea    0xeb6(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1137 <main+0x27>
lea    0xe9e(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1126 <main+0x16>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0x78,%edi
call   1030 <putchar@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
pop    %rcx
ret

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

LLVM IR (-O2):
define i32 @main() {
%1 = tail call i32 @putchar(i32 120)
%2 = tail call i32 @putchar(i32 10)
%3 = tail call i32 @putchar(i32 120)
%4 = tail call i32 @putchar(i32 120)
%5 = tail call i32 @putchar(i32 10)
%6 = tail call i32 @putchar(i32 120)
%7 = tail call i32 @putchar(i32 120)
%8 = tail call i32 @putchar(i32 120)
%9 = tail call i32 @putchar(i32 10)
%10 = tail call i32 @putchar(i32 120)
%11 = tail call i32 @putchar(i32 120)
%12 = tail call i32 @putchar(i32 120)
%13 = tail call i32 @putchar(i32 120)
%14 = tail call i32 @putchar(i32 10)
%15 = tail call i32 @putchar(i32 120)
%16 = tail call i32 @putchar(i32 120)
%17 = tail call i32 @putchar(i32 120)
%18 = tail call i32 @putchar(i32 120)
%19 = tail call i32 @putchar(i32 120)
%20 = tail call i32 @putchar(i32 10)
ret i32 0
}