#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*/ factorize(int);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ sscanf(char *, char *, int *);
int main(int argc, char **argv) {
  int number;
  if (argc < 2) {
    printf("ERROR: Need exactly one argument\n");
    return -1;
  }
  sscanf(argv[1], "%d", &number);
  factorize(number);
  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    1168 <main+0x38>
lea    0xea9(%rip),%rdi
call   1030 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    118f <main+0x5f>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
lea    0xeab(%rip),%rsi
lea    -0x14(%rbp),%rdx
call   1040 <sscanf@plt>
mov    -0x14(%rbp),%edi
call   1050 <factorize@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     1149 <main+0x19>
lea    0xec6(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%eax
pop    %rcx
ret
mov    0x8(%rsi),%rdi
lea    0xeac(%rip),%rsi
lea    0x4(%rsp),%rdx
call   1040 <sscanf@plt>
mov    0x4(%rsp),%edi
call   1050 <factorize@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [34 x i8] c"ERROR: Need exactly one argument\0A\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp slt i32 %7, 2
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %3
br label %18
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = call i32 @sscanf(i8* %14, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %6)
%16 = load i32, i32* %6
%17 = call i32 @factorize(i32 %16)
store i32 0, i32* %3
br label %18
18: ; preds = %11, %9
%19 = load i32, i32* %3
ret i32 %19
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@str = [33 x i8] c"ERROR: Need exactly one argument\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca i32
%4 = bitcast i32* %3 to i8*
%5 = icmp slt i32 %0, 2
br i1 %5, label %6, label %8
6: ; preds = %2
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @str, i64 0, i64 0))
br label %14
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = call i32 @sscanf(i8* %10, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%12 = load i32, i32* %3
%13 = call i32 @factorize(i32 %12)
br label %14
14: ; preds = %8, %6
%15 = phi i32 [ -1, %6 ], [ 0, %8 ]
ret i32 %15
}