#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 /*<<< orphan*/ scanf(char *, int *);
int main() {
  int a, count = 0;
  printf("Enter the number \n");
  scanf("%d", &a);
  if ((a & (a - 1)) == 0)
    printf("The number is power of 2 \n");
  else
    printf("The number is not the power of 2 \n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xec3(%rip),%rdi
call   1030 <printf@plt>
lea    0xeca(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    -0x8(%rbp),%ecx
sub    $0x1,%ecx
and    %ecx,%eax
cmp    $0x0,%eax
jne    1177 <main+0x57>
lea    0xea9(%rip),%rdi
call   1030 <printf@plt>
jmp    1183 <main+0x63>
lea    0xeb3(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xedb(%rip),%rdi
call   1030 <puts@plt>
lea    0xecc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
lea    -0x1(%rax),%ecx
test   %ecx,%eax
lea    0xee9(%rip),%rax
lea    0xec0(%rip),%rdi
cmove  %rax,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [19 x i8] c"Enter the number \0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [27 x i8] c"The number is power of 2 \0A\00"
@.str.3 = [35 x i8] c"The number is not the power of 2 \0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
%4 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%6 = load i32, i32* %2
%7 = load i32, i32* %2
%8 = sub nsw i32 %7, 1
%9 = and i32 %6, %8
%10 = icmp eq i32 %9, 0
br i1 %10, label %11, label %13
11: ; preds = %0
%12 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
br label %15
13: ; preds = %0
%14 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0))
br label %15
15: ; preds = %13, %11
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@str = [18 x i8] c"Enter the number \00"
@str.4 = [34 x i8] c"The number is not the power of 2 \00"
@str.5 = [26 x i8] c"The number is power of 2 \00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = call i32 @llvm.ctpop.i32(i32 %5)
%7 = icmp ult i32 %6, 2
%8 = select i1 %7, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @str.5, i64 0, i64 0), i8* getelementptr inbounds ([34 x i8], [34 x i8]* @str.4, i64 0, i64 0)
%9 = call i32 @puts(i8* dereferenceable(1) %8)
ret i32 0
}