#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*/ printf(char *, int);
int main(void) {
  int result = 0;
  for (int i = 0; i < 1000; i++) {
    if (i % 3 == 0) {
      result += i;
    } else if (i % 5 == 0) {
      result += i;
    }
  }
  printf("result: %d", result);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
cmpl   $0x3e8,-0xc(%rbp)
jge    1191 <main+0x81>
mov    -0xc(%rbp),%eax
mov    $0x3,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    115c <main+0x4c>
mov    -0xc(%rbp),%eax
add    -0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
jmp    117e <main+0x6e>
mov    -0xc(%rbp),%eax
mov    $0x5,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1179 <main+0x69>
mov    -0xc(%rbp),%eax
add    -0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
jmp    117e <main+0x6e>
jmp    1183 <main+0x73>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    112d <main+0x1d>
mov    -0x8(%rbp),%esi
lea    0xe65(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
movdqa 0xee6(%rip),%xmm8
pxor   %xmm1,%xmm1
movdqa 0xeea(%rip),%xmm2
mov    $0x3e8,%eax
movdqa 0xf0c(%rip),%xmm15
movdqa 0xf13(%rip),%xmm10
movdqa 0xf1a(%rip),%xmm11
movdqa 0xf22(%rip),%xmm3
movdqa 0xf29(%rip),%xmm12
movdqa 0xf30(%rip),%xmm13
movdqa 0xf37(%rip),%xmm14
pxor   %xmm7,%xmm7
pxor   %xmm6,%xmm6
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
movdqa %xmm8,%xmm0
pmullw 0xea3(%rip),%xmm0
movdqa %xmm0,%xmm5
psubusw %xmm15,%xmm5
pcmpeqw %xmm1,%xmm5
movdqa %xmm8,%xmm4
pmullw %xmm11,%xmm4
movdqa %xmm4,%xmm9
psubusw %xmm3,%xmm9
pcmpeqw %xmm1,%xmm9
por    %xmm5,%xmm9
paddw  %xmm10,%xmm0
psubusw %xmm15,%xmm0
pcmpeqw %xmm1,%xmm0
paddw  %xmm12,%xmm4
psubusw %xmm3,%xmm4
pcmpeqw %xmm1,%xmm4
por    %xmm0,%xmm4
punpcklwd %xmm9,%xmm0
psrad  $0x10,%xmm0
pand   %xmm2,%xmm0
paddd  %xmm0,%xmm7
movdqa %xmm2,%xmm0
paddd  0xe2b(%rip),%xmm0
punpcklwd %xmm4,%xmm4
psrad  $0x10,%xmm4
pand   %xmm0,%xmm4
paddd  %xmm4,%xmm6
paddd  %xmm13,%xmm2
paddw  %xmm14,%xmm8
add    $0xfffffff8,%eax
jne    1180 <main+0x70>
paddd  %xmm7,%xmm6
pshufd $0xee,%xmm6,%xmm0
paddd  %xmm6,%xmm0
pshufd $0x55,%xmm0,%xmm1
paddd  %xmm0,%xmm1
movd   %xmm1,%esi
lea    0xe76(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [11 x i8] c"result: %d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 0, i32* %3
br label %4
4: ; preds = %25, %0
%5 = load i32, i32* %3
%6 = icmp slt i32 %5, 1000
br i1 %6, label %7, label %28
7: ; preds = %4
%8 = load i32, i32* %3
%9 = srem i32 %8, 3
%10 = icmp eq i32 %9, 0
br i1 %10, label %11, label %15
11: ; preds = %7
%12 = load i32, i32* %3
%13 = load i32, i32* %2
%14 = add nsw i32 %13, %12
store i32 %14, i32* %2
br label %24
15: ; preds = %7
%16 = load i32, i32* %3
%17 = srem i32 %16, 5
%18 = icmp eq i32 %17, 0
br i1 %18, label %19, label %23
19: ; preds = %15
%20 = load i32, i32* %3
%21 = load i32, i32* %2
%22 = add nsw i32 %21, %20
store i32 %22, i32* %2
br label %23
23: ; preds = %19, %15
br label %24
24: ; preds = %23, %11
br label %25
25: ; preds = %24
%26 = load i32, i32* %3
%27 = add nsw i32 %26, 1
store i32 %27, i32* %3
br label %4
28: ; preds = %4
%29 = load i32, i32* %2
%30 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %29)
ret i32 0
}

LLVM IR (-O2):
@.str = [11 x i8] c"result: %d\00"
define i32 @main() {
br label %1
1: ; preds = %1, %0
%2 = phi i32 [ 0, %0 ], [ %23, %1 ]
%3 = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %0 ], [ %24, %1 ]
%4 = phi <4 x i32> [ zeroinitializer, %0 ], [ %21, %1 ]
%5 = phi <4 x i32> [ zeroinitializer, %0 ], [ %22, %1 ]
%6 = phi <4 x i16> [ <i16 0, i16 1, i16 2, i16 3>, %0 ], [ %25, %1 ]
%7 = add <4 x i32> %3, <i32 4, i32 4, i32 4, i32 4>
%8 = add <4 x i16> %6, <i16 4, i16 4, i16 4, i16 4>
%9 = urem <4 x i16> %6, <i16 3, i16 3, i16 3, i16 3>
%10 = urem <4 x i16> %8, <i16 3, i16 3, i16 3, i16 3>
%11 = icmp eq <4 x i16> %9, zeroinitializer
%12 = icmp eq <4 x i16> %10, zeroinitializer
%13 = urem <4 x i16> %6, <i16 5, i16 5, i16 5, i16 5>
%14 = urem <4 x i16> %8, <i16 5, i16 5, i16 5, i16 5>
%15 = icmp eq <4 x i16> %13, zeroinitializer
%16 = icmp eq <4 x i16> %14, zeroinitializer
%17 = or <4 x i1> %11, %15
%18 = select <4 x i1> %17, <4 x i32> %3, <4 x i32> zeroinitializer
%19 = or <4 x i1> %12, %16
%20 = select <4 x i1> %19, <4 x i32> %7, <4 x i32> zeroinitializer
%21 = add <4 x i32> %18, %4
%22 = add <4 x i32> %20, %5
%23 = add nuw i32 %2, 8
%24 = add <4 x i32> %3, <i32 8, i32 8, i32 8, i32 8>
%25 = add <4 x i16> %6, <i16 8, i16 8, i16 8, i16 8>
%26 = icmp eq i32 %23, 1000
br i1 %26, label %27, label %1
27: ; preds = %1
%28 = add <4 x i32> %22, %21
%29 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %28)
%30 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %29)
ret i32 0
}