#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*/ suma_resta(int, int, int, int);
int /*<<< orphan*/ suma_resta2(int, int, int *, int *);
int main() {
  int v1 = 2, v2 = 3, v3 = 0, v4 = 0;
  printf("Paso por valor:\n");
  suma_resta(v1, v2, v3, v4);
  printf("v3=%d y v4=%d\n", v3, v4);
  printf("\nPaso por referencia:\n");
  suma_resta2(v1, v2, &v3, &v4);
  printf("v3=%d y v4=%d\n", v3, v4);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x2,-0x8(%rbp)
movl   $0x3,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
lea    0xe9e(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
mov    -0x10(%rbp),%edx
mov    -0x14(%rbp),%ecx
call   1030 <suma_resta@plt>
mov    -0x10(%rbp),%esi
mov    -0x14(%rbp),%edx
lea    0xe8a(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe8b(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
lea    -0x10(%rbp),%rdx
lea    -0x14(%rbp),%rcx
call   1050 <suma_resta2@plt>
mov    -0x10(%rbp),%esi
mov    -0x14(%rbp),%edx
lea    0xe55(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0x0,0xc(%rsp)
movl   $0x0,0x8(%rsp)
lea    0xeb3(%rip),%rdi
call   1030 <puts@plt>
mov    $0x2,%edi
mov    $0x3,%esi
xor    %edx,%edx
xor    %ecx,%ecx
call   1040 <suma_resta@plt>
lea    0xe85(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
xor    %edx,%edx
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xe8f(%rip),%rdi
call   1030 <puts@plt>
lea    0xc(%rsp),%rdx
lea    0x8(%rsp),%rcx
mov    $0x2,%edi
mov    $0x3,%esi
call   1060 <suma_resta2@plt>
mov    0xc(%rsp),%esi
mov    0x8(%rsp),%edx
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Paso por valor:\0A\00"
@.str.1 = [15 x i8] c"v3=%d y v4=%d\0A\00"
@.str.2 = [23 x i8] c"\0APaso por referencia:\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
store i32 2, i32* %2
store i32 3, i32* %3
store i32 0, i32* %4
store i32 0, i32* %5
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
%7 = load i32, i32* %2
%8 = load i32, i32* %3
%9 = load i32, i32* %4
%10 = load i32, i32* %5
%11 = call i32 @suma_resta(i32 %7, i32 %8, i32 %9, i32 %10)
%12 = load i32, i32* %4
%13 = load i32, i32* %5
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %12, i32 %13)
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0))
%16 = load i32, i32* %2
%17 = load i32, i32* %3
%18 = call i32 @suma_resta2(i32 %16, i32 %17, i32* %4, i32* %5)
%19 = load i32, i32* %4
%20 = load i32, i32* %5
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %19, i32 %20)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [15 x i8] c"v3=%d y v4=%d\0A\00"
@str = [16 x i8] c"Paso por valor:\00"
@str.3 = [22 x i8] c"\0APaso por referencia:\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 0, i32* %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str, i64 0, i64 0))
%6 = tail call i32 @suma_resta(i32 2, i32 3, i32 0, i32 0)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 0, i32 0)
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.3, i64 0, i64 0))
%9 = call i32 @suma_resta2(i32 2, i32 3, i32* %1, i32* %2)
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %10, i32 %11)
ret i32 0
}