#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 f1(int, int);
int f2(int *, int *);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  int a = 5;
  int b = 13;
  int rez = 0;
  rez = f1(a, b);
  printf("rez = %d;\n", rez);
  printf("\nafter f1:\na = %d; b = %d;\n", a, b);
  printf("-------------------\n");
  rez = 0;
  rez = f2(&a, &b);
  printf("rez = %d;\n", rez);
  printf("\nafter f2:\na = %d; b = %d;\n", a, b);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x5,-0x8(%rbp)
movl   $0xd,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x8(%rbp),%edi
mov    -0xc(%rbp),%esi
call   1050 <f1@plt>
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe8b(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe99(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0x10(%rbp)
lea    -0x8(%rbp),%rdi
lea    -0xc(%rbp),%rsi
call   1030 <f2@plt>
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%esi
lea    0xe4a(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe72(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
movl   $0x5,0xc(%rsp)
movl   $0xd,0x8(%rsp)
mov    $0x5,%edi
mov    $0xd,%esi
call   1060 <f1@plt>
lea    0xe95(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xe8d(%rip),%rdi
mov    $0x5,%esi
mov    $0xd,%edx
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xead(%rip),%rdi
call   1040 <puts@plt>
lea    0xc(%rsp),%rdi
lea    0x8(%rsp),%rsi
call   1030 <f2@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0xc(%rsp),%esi
mov    0x8(%rsp),%edx
lea    0xe62(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [11 x i8] c"rez = %d;\0A\00"
@.str.1 = [28 x i8] c"\0Aafter f1:\0Aa = %d; b = %d;\0A\00"
@.str.2 = [21 x i8] c"-------------------\0A\00"
@.str.3 = [28 x i8] c"\0Aafter f2:\0Aa = %d; b = %d;\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
store i32 5, i32* %2
store i32 13, i32* %3
store i32 0, i32* %4
%5 = load i32, i32* %2
%6 = load i32, i32* %3
%7 = call i32 @f1(i32 %5, i32 %6)
store i32 %7, i32* %4
%8 = load i32, i32* %4
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = load i32, i32* %2
%11 = load i32, i32* %3
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.1, i64 0, i64 0), i32 %10, i32 %11)
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %4
%14 = call i32 @f2(i32* %2, i32* %3)
store i32 %14, i32* %4
%15 = load i32, i32* %4
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %15)
%17 = load i32, i32* %2
%18 = load i32, i32* %3
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0), i32 %17, i32 %18)
ret i32 0
}

LLVM IR (-O2):
@.str = [11 x i8] c"rez = %d;\0A\00"
@.str.1 = [28 x i8] c"\0Aafter f1:\0Aa = %d; b = %d;\0A\00"
@.str.3 = [28 x i8] c"\0Aafter f2:\0Aa = %d; b = %d;\0A\00"
@str = [20 x i8] c"-------------------\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 5, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 13, i32* %2
%5 = tail call i32 @f1(i32 5, i32 13)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.1, i64 0, i64 0), i32 5, i32 13)
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str, i64 0, i64 0))
%9 = call i32 @f2(i32* %1, i32* %2)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %9)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0), i32 %11, i32 %12)
ret i32 0
}