#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*/ testCall1();
int /*<<< orphan*/ testCall2();
int /*<<< orphan*/ testCall3();
int main() {
  printf("The return values of the system calls are:\n");
  printf("\tcs3013_syscall1: %ld\n", testCall1());
  printf("\tcs3013_syscall2: %ld\n", testCall2());
  printf("\tcs3013_syscall3: %ld\n", testCall3());
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1060 <testCall1@plt>
mov    %eax,%esi
lea    0xebf(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1030 <testCall2@plt>
mov    %eax,%esi
lea    0xebf(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x0,%al
call   1050 <testCall3@plt>
mov    %eax,%esi
lea    0xebf(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xeed(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
call   1070 <testCall1@plt>
lea    0xe95(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
call   1030 <testCall2@plt>
lea    0xe95(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
call   1060 <testCall3@plt>
lea    0xe95(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [44 x i8] c"The return values of the system calls are:\0A\00"
@.str.1 = [23 x i8] c"\09cs3013_syscall1: %ld\0A\00"
@.str.2 = [23 x i8] c"\09cs3013_syscall2: %ld\0A\00"
@.str.3 = [23 x i8] c"\09cs3013_syscall3: %ld\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str, i64 0, i64 0))
%3 = call i32 (...) @testCall1()
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%5 = call i32 (...) @testCall2()
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = call i32 (...) @testCall3()
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.3, i64 0, i64 0), i32 %7)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [23 x i8] c"\09cs3013_syscall1: %ld\0A\00"
@.str.2 = [23 x i8] c"\09cs3013_syscall2: %ld\0A\00"
@.str.3 = [23 x i8] c"\09cs3013_syscall3: %ld\0A\00"
@str = [43 x i8] c"The return values of the system calls are:\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 (...) @testCall1()
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %2)
%4 = tail call i32 (...) @testCall2()
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.2, i64 0, i64 0), i32 %4)
%6 = tail call i32 (...) @testCall3()
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.3, i64 0, i64 0), i32 %6)
ret i32 0
}