#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 hamdist(int, int);
int /*<<< orphan*/ printf(char *, int, int, int);
int main() {
  printf("Hamming Distance between %d & %d is %d\n", 7, 2, hamdist(7, 2));
  printf("Hamming Distance between %d & %d is %d\n", 4, 3, hamdist(4, 3));
  printf("Hamming Distance between %d & %d is %d\n", 128, 256,
         hamdist(128, 256));
  printf("Hamming Distance between %d & %d is %d\n", 127, 256,
         hamdist(127, 256));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x7,%edi
mov    $0x2,%esi
call   1040 <hamdist@plt>
mov    %eax,%ecx
lea    0xeb9(%rip),%rdi
mov    $0x7,%esi
mov    $0x2,%edx
call   1030 <printf@plt>
mov    $0x4,%edi
mov    $0x3,%esi
call   1040 <hamdist@plt>
mov    %eax,%ecx
lea    0xe92(%rip),%rdi
mov    $0x4,%esi
mov    $0x3,%edx
call   1030 <printf@plt>
mov    $0x80,%edi
mov    $0x100,%esi
call   1040 <hamdist@plt>
mov    %eax,%ecx
lea    0xe6b(%rip),%rdi
mov    $0x80,%esi
mov    $0x100,%edx
call   1030 <printf@plt>
mov    $0x7f,%edi
mov    $0x100,%esi
call   1040 <hamdist@plt>
mov    %eax,%ecx
lea    0xe44(%rip),%rdi
mov    $0x7f,%esi
mov    $0x100,%edx
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    $0x7,%edi
mov    $0x2,%esi
call   1040 <hamdist@plt>
lea    0xec9(%rip),%rbx
mov    %rbx,%rdi
mov    $0x7,%esi
mov    $0x2,%edx
mov    %eax,%ecx
call   1030 <printf@plt>
mov    $0x4,%edi
mov    $0x3,%esi
call   1040 <hamdist@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    $0x3,%edx
mov    %eax,%ecx
call   1030 <printf@plt>
mov    $0x80,%edi
mov    $0x100,%esi
call   1040 <hamdist@plt>
mov    %rbx,%rdi
mov    $0x80,%esi
mov    $0x100,%edx
mov    %eax,%ecx
call   1030 <printf@plt>
mov    $0x7f,%edi
mov    $0x100,%esi
call   1040 <hamdist@plt>
mov    %rbx,%rdi
mov    $0x7f,%esi
mov    $0x100,%edx
mov    %eax,%ecx
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [40 x i8] c"Hamming Distance between %d & %d is %d\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @hamdist(i32 7, i32 2)
%3 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 7, i32 2, i32 %2)
%4 = call i32 @hamdist(i32 4, i32 3)
%5 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 4, i32 3, i32 %4)
%6 = call i32 @hamdist(i32 128, i32 256)
%7 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 128, i32 256, i32 %6)
%8 = call i32 @hamdist(i32 127, i32 256)
%9 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 127, i32 256, i32 %8)
ret i32 0
}

LLVM IR (-O2):
@.str = [40 x i8] c"Hamming Distance between %d & %d is %d\0A\00"
define i32 @main() {
%1 = tail call i32 @hamdist(i32 7, i32 2)
%2 = tail call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 7, i32 2, i32 %1)
%3 = tail call i32 @hamdist(i32 4, i32 3)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 4, i32 3, i32 %3)
%5 = tail call i32 @hamdist(i32 128, i32 256)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 128, i32 256, i32 %5)
%7 = tail call i32 @hamdist(i32 127, i32 256)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str, i64 0, i64 0), i32 127, i32 256, i32 %7)
ret i32 0
}