#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 check(int, int, int);
int main(int argc, char **argv) {
  int prev = 0, next = 1, sum = 0, cur = 0;
  do {
    cur = prev + next;
    if (cur % 2 == 0) {
      sum += cur;
    }
    prev = next;
    next = cur;
  } while (cur < 4000000);
  return check(2, 4613732, sum);
}


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)
movl   $0x0,-0x14(%rbp)
movl   $0x1,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
movl   $0x0,-0x20(%rbp)
mov    -0x14(%rbp),%eax
add    -0x18(%rbp),%eax
mov    %eax,-0x20(%rbp)
mov    -0x20(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1168 <main+0x58>
mov    -0x20(%rbp),%eax
add    -0x1c(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0x20(%rbp),%eax
mov    %eax,-0x18(%rbp)
cmpl   $0x3d0900,-0x20(%rbp)
jl     1142 <main+0x32>
mov    -0x1c(%rbp),%edx
mov    $0x2,%edi
mov    $0x466664,%esi
call   1030 <check@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
mov    $0x1,%eax
xor    %ecx,%ecx
xor    %edx,%edx
nopl   0x0(%rax)
mov    %ecx,%esi
add    %eax,%esi
test   $0x1,%sil
mov    $0x0,%ecx
cmove  %esi,%ecx
add    %ecx,%edx
mov    %eax,%ecx
mov    %esi,%eax
cmp    $0x3d0900,%esi
jl     1120 <main+0x10>
mov    $0x2,%edi
mov    $0x466664,%esi
jmp    1030 <check@plt>

LLVM IR (-O0):
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 0, i32* %6
store i32 1, i32* %7
store i32 0, i32* %8
store i32 0, i32* %9
br label %10
10: ; preds = %24, %2
%11 = load i32, i32* %6
%12 = load i32, i32* %7
%13 = add nsw i32 %11, %12
store i32 %13, i32* %9
%14 = load i32, i32* %9
%15 = srem i32 %14, 2
%16 = icmp eq i32 %15, 0
br i1 %16, label %17, label %21
17: ; preds = %10
%18 = load i32, i32* %9
%19 = load i32, i32* %8
%20 = add nsw i32 %19, %18
store i32 %20, i32* %8
br label %21
21: ; preds = %17, %10
%22 = load i32, i32* %7
store i32 %22, i32* %6
%23 = load i32, i32* %9
store i32 %23, i32* %7
br label %24
24: ; preds = %21
%25 = load i32, i32* %9
%26 = icmp slt i32 %25, 4000000
br i1 %26, label %10, label %27
27: ; preds = %24
%28 = load i32, i32* %8
%29 = call i32 @check(i32 2, i32 4613732, i32 %28)
ret i32 %29
}

LLVM IR (-O2):
define i32 @main(i32 %0, i8** nocapture readnone %1) {
br label %3
3: ; preds = %3, %2
%4 = phi i32 [ 0, %2 ], [ %5, %3 ]
%5 = phi i32 [ 1, %2 ], [ %7, %3 ]
%6 = phi i32 [ 0, %2 ], [ %11, %3 ]
%7 = add nsw i32 %5, %4
%8 = and i32 %7, 1
%9 = icmp eq i32 %8, 0
%10 = select i1 %9, i32 %7, i32 0
%11 = add nsw i32 %10, %6
%12 = icmp slt i32 %7, 4000000
br i1 %12, label %3, label %13
13: ; preds = %3
%14 = tail call i32 @check(i32 2, i32 4613732, i32 %11)
ret i32 %14
}