#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 atoi(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int primes(int);
int /*<<< orphan*/ stderr;
int main(int argc, char *argv[]) {
  if (argc < 2) {
    fprintf(stderr, "Usage: %s <n>\n", argv[0]);
    return 0;
  }
  int n = atoi(argv[1]);
  int sum = primes(n);
  fprintf(stderr, "The sum is %d\n", sum);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    117a <main+0x4a>
mov    0x2e89(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe99(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
movl   $0x0,-0x4(%rbp)
jmp    11b6 <main+0x86>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1040 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%edi
call   1050 <primes@plt>
mov    %eax,-0x18(%rbp)
mov    0x2e44(%rip),%rax
mov    (%rax),%edi
mov    -0x18(%rbp),%edx
lea    0xe67(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x1,%edi
jg     1152 <main+0x22>
mov    0x2ea3(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xeb7(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
jmp    117b <main+0x4b>
mov    0x8(%rsi),%rdi
call   1040 <atoi@plt>
mov    %eax,%edi
call   1050 <primes@plt>
mov    0x2e77(%rip),%rcx
mov    (%rcx),%edi
lea    0xe9d(%rip),%rsi
mov    %eax,%edx
xor    %eax,%eax
call   1030 <fprintf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [15 x i8] c"Usage: %s <n>\0A\00"
@.str.1 = [15 x i8] c"The sum is %d\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp slt i32 %8, 2
br i1 %9, label %10, label %16
10: ; preds = %2
%11 = load i32, i32* @stderr
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 0
%14 = load i8*, i8** %13
%15 = call i32 (i32, i8*, ...) @fprintf(i32 %11, i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i8* %14)
store i32 0, i32* %3
br label %26
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)
store i32 %20, i32* %6
%21 = load i32, i32* %6
%22 = call i32 @primes(i32 %21)
store i32 %22, i32* %7
%23 = load i32, i32* @stderr
%24 = load i32, i32* %7
%25 = call i32 (i32, i8*, ...) @fprintf(i32 %23, i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %24)
store i32 0, i32* %3
br label %26
26: ; preds = %16, %10
%27 = load i32, i32* %3
ret i32 %27
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [15 x i8] c"Usage: %s <n>\0A\00"
@.str.1 = [15 x i8] c"The sum is %d\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %8
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 (i32, i8*, ...) @fprintf(i32 %5, i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %15
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i32 @atoi(i8* %10)
%12 = tail call i32 @primes(i32 %11)
%13 = load i32, i32* @stderr
%14 = tail call i32 (i32, i8*, ...) @fprintf(i32 %13, i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %12)
br label %15
15: ; preds = %8, %4
ret i32 0
}