#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 numero = 1;
  while (numero != 0) {
    do {
      printf("digite um número maior que 1 ou 0 para sair: ");
      scanf("%d", &numero);
    } while (numero < 0);
    printf("%d\n", numero *= numero);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
je     118a <main+0x6a>
jmp    1145 <main+0x25>
lea    0xeb4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jl     1145 <main+0x25>
mov    -0x8(%rbp),%esi
imul   -0x8(%rbp),%esi
mov    %esi,-0x8(%rbp)
lea    0xeb4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1136 <main+0x16>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
movl   $0x1,0x4(%rsp)
lea    0xec9(%rip),%r14
lea    0xef1(%rip),%r15
lea    0x4(%rsp),%rbx
lea    0xee8(%rip),%r12
nopw   0x0(%rax,%rax,1)
mov    %r14,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %r15,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
js     1150 <main+0x30>
imul   %esi,%esi
mov    %esi,0x4(%rsp)
mov    %r12,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
cmpl   $0x0,0x4(%rsp)
jne    1150 <main+0x30>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [47 x i8] c"digite um n\C3\BAmero maior que 1 ou 0 para sair: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 1, i32* %2
br label %3
3: ; preds = %13, %0
%4 = load i32, i32* %2
%5 = icmp ne i32 %4, 0
br i1 %5, label %6, label %18
6: ; preds = %3
br label %7
7: ; preds = %10, %6
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
br label %10
10: ; preds = %7
%11 = load i32, i32* %2
%12 = icmp slt i32 %11, 0
br i1 %12, label %7, label %13
13: ; preds = %10
%14 = load i32, i32* %2
%15 = load i32, i32* %2
%16 = mul nsw i32 %15, %14
store i32 %16, i32* %2
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %16)
br label %3
18: ; preds = %3
ret i32 0
}

LLVM IR (-O2):
@.str = [47 x i8] c"digite um n\C3\BAmero maior que 1 ou 0 para sair: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 1, i32* %1
br label %3
3: ; preds = %8, %0
%4 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 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* %1)
%6 = load i32, i32* %1
%7 = icmp slt i32 %6, 0
br i1 %7, label %8, label %9
8: ; preds = %3, %9
br label %3
9: ; preds = %3
%10 = mul nsw i32 %6, %6
store i32 %10, i32* %1
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %10)
%12 = load i32, i32* %1
%13 = icmp eq i32 %12, 0
br i1 %13, label %14, label %8
14: ; preds = %9
ret i32 0
}