#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 /*<<< orphan*/ FILE;

/* Variables and functions */
scalar_t__ EOF;
int __builtin_popcount(unsigned int);
int /*<<< orphan*/ *fopen(char *, char *);
scalar_t__ fscanf(int /*<<< orphan*/ *, char *, unsigned int *);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  FILE *fp;
  unsigned a;
  if (argc != 2) {
    printf("Usage: %s [FILE]\n", argv[0]);
    return 1;
  }
  fp = fopen(*++argv, "r");
  while (fscanf(fp, "%u", &a) != EOF)
    printf("%u\n", __builtin_popcount(a) % 3);
  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)
je     1171 <main+0x41>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xea2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    1211 <main+0xe1>
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x8,%rcx
mov    %rcx,-0x10(%rbp)
mov    0x8(%rax),%rdi
lea    0xe87(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
lea    0xe75(%rip),%rsi
lea    -0x1c(%rbp),%rdx
call   1040 <fscanf@plt>
mov    0x2e39(%rip),%rcx
cmp    (%rcx),%rax
je     120a <main+0xda>
mov    -0x1c(%rbp),%ecx
mov    %ecx,%eax
shr    %eax
and    $0x55555555,%eax
sub    %eax,%ecx
mov    %ecx,%eax
and    $0x33333333,%eax
shr    $0x2,%ecx
and    $0x33333333,%ecx
add    %ecx,%eax
mov    %eax,%ecx
shr    $0x4,%ecx
add    %ecx,%eax
and    $0xf0f0f0f,%eax
imul   $0x1010101,%eax,%eax
shr    $0x18,%eax
mov    $0x3,%ecx
cltd
idiv   %ecx
mov    %edx,%esi
lea    0xe19(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1194 <main+0x64>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
cmp    $0x2,%edi
jne    1209 <main+0xd9>
mov    0x8(%rsi),%rdi
lea    0xec3(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,%rbx
lea    0xeb6(%rip),%rsi
lea    0x4(%rsp),%rdx
mov    %rax,%rdi
call   1040 <fscanf@plt>
mov    0x2e76(%rip),%r13
xor    %ebp,%ebp
cmp    0x0(%r13),%rax
je     121f <main+0xef>
lea    0xe92(%rip),%r14
lea    0xe88(%rip),%r15
lea    0x4(%rsp),%r12
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    0x4(%rsp),%eax
mov    %eax,%ecx
shr    %ecx
and    $0x55555555,%ecx
sub    %ecx,%eax
mov    %eax,%ecx
and    $0x33333333,%ecx
shr    $0x2,%eax
and    $0x33333333,%eax
add    %ecx,%eax
mov    %eax,%ecx
shr    $0x4,%ecx
add    %eax,%ecx
and    $0xf0f0f0f,%ecx
imul   $0x1010101,%ecx,%eax
shr    $0x18,%eax
imul   $0xab,%eax,%ecx
shr    $0x9,%ecx
lea    (%rcx,%rcx,2),%ecx
sub    %cl,%al
movzbl %al,%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
mov    %r12,%rdx
call   1040 <fscanf@plt>
cmp    0x0(%r13),%rax
jne    11a0 <main+0x70>
jmp    121f <main+0xef>
mov    (%rsi),%rsi
lea    0xded(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    $0x1,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [18 x i8] c"Usage: %s [FILE]\0A\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%u\00"
@EOF = global i64 0
@.str.3 = [4 x i8] c"%u\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32*
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 2
br i1 %9, label %10, label %15
10: ; preds = %2
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i8* %13)
store i32 1, i32* %3
br label %31
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i32 1
store i8** %17, i8*** %5
%18 = load i8*, i8** %17
%19 = call i32* @fopen(i8* %18, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %19, i32** %6
br label %20
20: ; preds = %25, %15
%21 = load i32*, i32** %6
%22 = call i64 @fscanf(i32* %21, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %7)
%23 = load i64, i64* @EOF
%24 = icmp ne i64 %22, %23
br i1 %24, label %25, label %30
25: ; preds = %20
%26 = load i32, i32* %7
%27 = call i32 @llvm.ctpop.i32(i32 %26)
%28 = srem i32 %27, 3
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %28)
br label %20
30: ; preds = %20
store i32 0, i32* %3
br label %31
31: ; preds = %30, %10
%32 = load i32, i32* %3
ret i32 %32
}

LLVM IR (-O2):
@.str = [18 x i8] c"Usage: %s [FILE]\0A\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [3 x i8] c"%u\00"
@EOF = global i64 0
@.str.3 = [4 x i8] c"%u\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca i32
%4 = bitcast i32* %3 to i8*
%5 = icmp eq i32 %0, 2
br i1 %5, label %9, label %6
6: ; preds = %2
%7 = load i8*, i8** %1
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i8* %7)
br label %26
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = tail call i32* @fopen(i8* %11, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%13 = call i64 @fscanf(i32* %12, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%14 = load i64, i64* @EOF
%15 = icmp eq i64 %13, %14
br i1 %15, label %26, label %16
16: ; preds = %9, %16
%17 = load i32, i32* %3
%18 = call i32 @llvm.ctpop.i32(i32 %17)
%19 = trunc i32 %18 to i8
%20 = urem i8 %19, 3
%21 = zext i8 %20 to i32
%22 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %21)
%23 = call i64 @fscanf(i32* %12, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%24 = load i64, i64* @EOF
%25 = icmp eq i64 %23, %24
br i1 %25, label %26, label %16
26: ; preds = %16, %9, %6
%27 = phi i32 [ 1, %6 ], [ 0, %9 ], [ 0, %16 ]
ret i32 %27
}