#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*/ copia();
int obtenlinea();
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ voltea();
int main(void) {
  int longitud;
  extern int max;
  extern char linea_max[1000];
  max = 0;
  while ((longitud = obtenlinea()) > 0) {
    max = longitud;
    copia();
    voltea();
    printf("%s", linea_max);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2e82(%rip),%rax
movl   $0x0,(%rax)
mov    $0x0,%al
call   1030 <obtenlinea@plt>
mov    %eax,-0x8(%rbp)
cmp    $0x0,%eax
jle    11a1 <main+0x61>
mov    -0x8(%rbp),%ecx
mov    0x2e5f(%rip),%rax
mov    %ecx,(%rax)
mov    $0x0,%al
call   1040 <copia@plt>
mov    $0x0,%al
call   1060 <voltea@plt>
lea    0xe70(%rip),%rdi
mov    0x2e49(%rip),%rsi
call   1050 <printf@plt>
jmp    115c <main+0x1c>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
mov    0x2e8c(%rip),%r15
movl   $0x0,(%r15)
xor    %eax,%eax
call   1030 <obtenlinea@plt>
test   %eax,%eax
jle    1197 <main+0x57>
lea    0xe9b(%rip),%r14
mov    0x2e74(%rip),%rbx
nopl   0x0(%rax)
mov    %eax,(%r15)
xor    %eax,%eax
call   1040 <copia@plt>
xor    %eax,%eax
call   1060 <voltea@plt>
mov    %r14,%rdi
mov    %rbx,%rsi
call   1050 <printf@plt>
xor    %eax,%eax
call   1030 <obtenlinea@plt>
test   %eax,%eax
jg     1170 <main+0x30>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@max = external global i32
@.str = [3 x i8] c"%s\00"
@linea_max = external global [1000 x i8]
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* @max
br label %3
3: ; preds = %6, %0
%4 = call i32 (...) @obtenlinea()
store i32 %4, i32* %2
%5 = icmp sgt i32 %4, 0
br i1 %5, label %6, label %11
6: ; preds = %3
%7 = load i32, i32* %2
store i32 %7, i32* @max
%8 = call i32 (...) @copia()
%9 = call i32 (...) @voltea()
%10 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1000 x i8], [1000 x i8]* @linea_max, i64 0, i64 0))
br label %3
11: ; preds = %3
ret i32 0
}

LLVM IR (-O2):
@max = external global i32
@.str = [3 x i8] c"%s\00"
@linea_max = external global [1000 x i8]
define i32 @main() {
store i32 0, i32* @max
%1 = tail call i32 (...) @obtenlinea()
%2 = icmp sgt i32 %1, 0
br i1 %2, label %3, label %10
3: ; preds = %0, %3
%4 = phi i32 [ %8, %3 ], [ %1, %0 ]
store i32 %4, i32* @max
%5 = tail call i32 (...) @copia()
%6 = tail call i32 (...) @voltea()
%7 = tail call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1000 x i8], [1000 x i8]* @linea_max, i64 0, i64 0))
%8 = tail call i32 (...) @obtenlinea()
%9 = icmp sgt i32 %8, 0
br i1 %9, label %3, label %10
10: ; preds = %3, %0
ret i32 0
}