#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*/ atoi(char *);
int /*<<< orphan*/ exit(int);
int os_getprime(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char **argv) {
  if (!argv[1]) {
    printf("%s <int>\n", argv[0]);
    exit(1);
  }
  printf("Value: %d\n", os_getprime(atoi(argv[1])));
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
cmpq   $0x0,0x8(%rax)
jne    1184 <main+0x44>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe8d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,%edi
call   1040 <os_getprime@plt>
mov    %eax,%esi
lea    0xe69(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
mov    0x8(%rsi),%rdi
test   %rdi,%rdi
je     116a <main+0x2a>
call   1050 <atoi@plt>
mov    %eax,%edi
call   1040 <os_getprime@plt>
lea    0xead(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret
mov    (%rsi),%rsi
lea    0xe8c(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [10 x i8] c"%s <int>\0A\00"
@.str.1 = [11 x i8] c"Value: %d\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i8**, i8*** %5
%7 = getelementptr inbounds i8*, i8** %6, i64 1
%8 = load i8*, i8** %7
%9 = icmp ne i8* %8, null
br i1 %9, label %16, label %10
10: ; preds = %2
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = call i32 @exit(i32 1)
unreachable
16: ; preds = %2
%17 = load i8**, i8*** %5
%18 = getelementptr inbounds i8*, i8** %17, i64 1
%19 = load i8*, i8** %18
%20 = call i32 @atoi(i8* %19)
%21 = call i32 @os_getprime(i32 %20)
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %21)
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"%s <int>\0A\00"
@.str.1 = [11 x i8] c"Value: %d\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = getelementptr inbounds i8*, i8** %1, i64 1
%4 = load i8*, i8** %3
%5 = icmp eq i8* %4, null
br i1 %5, label %6, label %10
6: ; preds = %2
%7 = load i8*, i8** %1
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* %7)
%9 = tail call i32 @exit(i32 1)
unreachable
10: ; preds = %2
%11 = tail call i32 @atoi(i8* %4)
%12 = tail call i32 @os_getprime(i32 %11)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %12)
ret i32 0
}