#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 */
unsigned long lcm(unsigned long, int);
int /*<<< orphan*/ printf(char *, unsigned long);
int main() {
  unsigned long int val = 1;
  for (int i = 2; i < 20; i++) {
    val = lcm(val, i);
  }
  printf("%lu\n", val);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movq   $0x1,-0x10(%rbp)
movl   $0x2,-0x14(%rbp)
cmpl   $0x14,-0x14(%rbp)
jge    1166 <main+0x46>
mov    -0x10(%rbp),%rdi
mov    -0x14(%rbp),%esi
call   1040 <lcm@plt>
mov    %rax,-0x10(%rbp)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    113e <main+0x1e>
mov    -0x10(%rbp),%rsi
lea    0xe8f(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
mov    $0x1,%edi
mov    $0x2,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x3,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x4,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x5,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x6,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x7,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x8,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x9,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xa,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xb,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xc,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xd,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xe,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0xf,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x10,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x11,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x12,%esi
call   1040 <lcm@plt>
mov    %rax,%rdi
mov    $0x13,%esi
call   1040 <lcm@plt>
lea    0xdec(%rip),%rdi
mov    %rax,%rsi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [5 x i8] c"%lu\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i64
%3 = alloca i32
store i32 0, i32* %1
store i64 1, i64* %2
store i32 2, i32* %3
br label %4
4: ; preds = %11, %0
%5 = load i32, i32* %3
%6 = icmp slt i32 %5, 20
br i1 %6, label %7, label %14
7: ; preds = %4
%8 = load i64, i64* %2
%9 = load i32, i32* %3
%10 = call i64 @lcm(i64 %8, i32 %9)
store i64 %10, i64* %2
br label %11
11: ; preds = %7
%12 = load i32, i32* %3
%13 = add nsw i32 %12, 1
store i32 %13, i32* %3
br label %4
14: ; preds = %4
%15 = load i64, i64* %2
%16 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i64 %15)
ret i32 0
}

LLVM IR (-O2):
@.str = [5 x i8] c"%lu\0A\00"
define i32 @main() {
%1 = tail call i64 @lcm(i64 1, i32 2)
%2 = tail call i64 @lcm(i64 %1, i32 3)
%3 = tail call i64 @lcm(i64 %2, i32 4)
%4 = tail call i64 @lcm(i64 %3, i32 5)
%5 = tail call i64 @lcm(i64 %4, i32 6)
%6 = tail call i64 @lcm(i64 %5, i32 7)
%7 = tail call i64 @lcm(i64 %6, i32 8)
%8 = tail call i64 @lcm(i64 %7, i32 9)
%9 = tail call i64 @lcm(i64 %8, i32 10)
%10 = tail call i64 @lcm(i64 %9, i32 11)
%11 = tail call i64 @lcm(i64 %10, i32 12)
%12 = tail call i64 @lcm(i64 %11, i32 13)
%13 = tail call i64 @lcm(i64 %12, i32 14)
%14 = tail call i64 @lcm(i64 %13, i32 15)
%15 = tail call i64 @lcm(i64 %14, i32 16)
%16 = tail call i64 @lcm(i64 %15, i32 17)
%17 = tail call i64 @lcm(i64 %16, i32 18)
%18 = tail call i64 @lcm(i64 %17, i32 19)
%19 = tail call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i64 %18)
ret i32 0
}