#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 */
typedef int uint32_t;

/* Variables and functions */
int /*<<< orphan*/ printf(char *, int);
int main() {
  uint32_t x = 0;
  uint32_t y = 1;
  uint32_t z;
  uint32_t sum = 0;
  do {
    z = x + y;
    x = y;
    y = z;
    if (!(y & 0x01))
      sum += y;
  } while (y <= 4000000);
  printf("%lu\n", sum);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x1,-0xc(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x8(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0xc(%rbp),%eax
mov    %eax,-0x8(%rbp)
mov    -0x10(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0xc(%rbp),%eax
and    $0x1,%eax
cmp    $0x0,%eax
jne    1161 <main+0x51>
mov    -0xc(%rbp),%eax
add    -0x14(%rbp),%eax
mov    %eax,-0x14(%rbp)
jmp    1166 <main+0x56>
cmpl   $0x3d0900,-0xc(%rbp)
jle    1134 <main+0x24>
mov    -0x14(%rbp),%esi
lea    0xe83(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
xor    %eax,%eax
mov    $0x1,%ecx
xor    %esi,%esi
nopl   0x0(%rax)
mov    %ecx,%edx
add    %ecx,%eax
test   $0x1,%al
mov    $0x0,%ecx
cmove  %eax,%ecx
add    %ecx,%esi
mov    %eax,%ecx
cmp    $0x3d0901,%eax
mov    %edx,%eax
jl     1120 <main+0x10>
push   %rax
lea    0xebd(%rip),%rdi
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 i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 1, i32* %3
store i32 0, i32* %5
br label %6
6: ; preds = %20, %0
%7 = load i32, i32* %2
%8 = load i32, i32* %3
%9 = add nsw i32 %7, %8
store i32 %9, i32* %4
%10 = load i32, i32* %3
store i32 %10, i32* %2
%11 = load i32, i32* %4
store i32 %11, i32* %3
%12 = load i32, i32* %3
%13 = and i32 %12, 1
%14 = icmp ne i32 %13, 0
br i1 %14, label %19, label %15
15: ; preds = %6
%16 = load i32, i32* %3
%17 = load i32, i32* %5
%18 = add nsw i32 %17, %16
store i32 %18, i32* %5
br label %19
19: ; preds = %15, %6
br label %20
20: ; preds = %19
%21 = load i32, i32* %3
%22 = icmp sle i32 %21, 4000000
br i1 %22, label %6, label %23
23: ; preds = %20
%24 = load i32, i32* %5
%25 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %24)
ret i32 0
}

LLVM IR (-O2):
@.str = [5 x i8] c"%lu\0A\00"
define i32 @main() {
br label %1
1: ; preds = %1, %0
%2 = phi i32 [ 1, %0 ], [ %5, %1 ]
%3 = phi i32 [ 0, %0 ], [ %2, %1 ]
%4 = phi i32 [ 0, %0 ], [ %9, %1 ]
%5 = add nsw i32 %3, %2
%6 = and i32 %5, 1
%7 = icmp eq i32 %6, 0
%8 = select i1 %7, i32 %5, i32 0
%9 = add nsw i32 %8, %4
%10 = icmp slt i32 %5, 4000001
br i1 %10, label %1, label %11
11: ; preds = %1
%12 = tail call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 %9)
ret i32 0
}