#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 x, y;
  for (y = 1; y <= 5; y++) {
    for (x = 1; x <= y; x++)
      printf(". ");
    for (x = 5 - y; x >= 1; x--)
      printf("@ ");
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0xc(%rbp)
cmpl   $0x5,-0xc(%rbp)
jg     11a6 <main+0x96>
movl   $0x1,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jg     115d <main+0x4d>
lea    0xeb6(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1137 <main+0x27>
mov    $0x5,%eax
sub    -0xc(%rbp),%eax
mov    %eax,-0x8(%rbp)
cmpl   $0x1,-0x8(%rbp)
jl     118c <main+0x7c>
lea    0xe8a(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0x8(%rbp)
jmp    1168 <main+0x58>
lea    0xe73(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1126 <main+0x16>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed5(%rip),%rbx
mov    %rbx,%rdi
call   1040 <printf@plt>
lea    0xec9(%rip),%r14
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %r14,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [3 x i8] c". \00"
@.str.1 = [3 x i8] c"@ \00"
@.str.2 = [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* %3
br label %4
4: ; preds = %30, %0
%5 = load i32, i32* %3
%6 = icmp sle i32 %5, 5
br i1 %6, label %7, label %33
7: ; preds = %4
store i32 1, i32* %2
br label %8
8: ; preds = %14, %7
%9 = load i32, i32* %2
%10 = load i32, i32* %3
%11 = icmp sle i32 %9, %10
br i1 %11, label %12, label %17
12: ; preds = %8
%13 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
br label %14
14: ; preds = %12
%15 = load i32, i32* %2
%16 = add nsw i32 %15, 1
store i32 %16, i32* %2
br label %8
17: ; preds = %8
%18 = load i32, i32* %3
%19 = sub nsw i32 5, %18
store i32 %19, i32* %2
br label %20
20: ; preds = %25, %17
%21 = load i32, i32* %2
%22 = icmp sge i32 %21, 1
br i1 %22, label %23, label %28
23: ; preds = %20
%24 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
br label %25
25: ; preds = %23
%26 = load i32, i32* %2
%27 = add nsw i32 %26, -1
store i32 %27, i32* %2
br label %20
28: ; preds = %20
%29 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %30
30: ; preds = %28
%31 = load i32, i32* %3
%32 = add nsw i32 %31, 1
store i32 %32, i32* %3
br label %4
33: ; preds = %4
%34 = load i32, i32* %1
ret i32 %34
}

LLVM IR (-O2):
@.str = [3 x i8] c". \00"
@.str.1 = [3 x i8] c"@ \00"
define i32 @main() {
%1 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%5 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%6 = tail call i32 @putchar(i32 10)
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%8 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%9 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%10 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%11 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%12 = tail call i32 @putchar(i32 10)
%13 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%14 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%15 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%16 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%17 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%18 = tail call i32 @putchar(i32 10)
%19 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%20 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%21 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%22 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%23 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%24 = tail call i32 @putchar(i32 10)
%25 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%26 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%27 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%28 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%29 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%30 = tail call i32 @putchar(i32 10)
ret i32 0
}