#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, b, rev = 0, n;
  printf("Enter any number\n");
  scanf("%d", &n);
  a = n;
  while (a > 0) {
    b = a % 10;
    rev = rev * 10 + b;
    a = a / 10;
  }
  if (rev == n) {
    printf("%d is pallindrome\n\n", n);
  } else {
    printf("%d is not pallindrome\n\n", n);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x10(%rbp)
lea    0xec3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec7(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x14(%rbp),%eax
mov    %eax,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
jle    118f <main+0x6f>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %edx,-0xc(%rbp)
imul   $0xa,-0x10(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
jmp    115a <main+0x3a>
mov    -0x10(%rbp),%eax
cmp    -0x14(%rbp),%eax
jne    11b1 <main+0x91>
mov    -0x14(%rbp),%esi
lea    0xe70(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c2 <main+0xa2>
mov    -0x14(%rbp),%esi
lea    0xe6e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xef7(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%esi
xor    %edx,%edx
test   %esi,%esi
jle    1183 <main+0x53>
mov    $0xcccccccd,%r8d
mov    %esi,%ecx
lea    (%rdx,%rdx,4),%r9d
mov    %ecx,%edi
imul   %r8,%rdi
shr    $0x23,%rdi
lea    (%rdi,%rdi,1),%eax
lea    (%rax,%rax,4),%eax
mov    %ecx,%edx
sub    %eax,%edx
lea    (%rdx,%r9,2),%edx
cmp    $0x9,%ecx
mov    %edi,%ecx
ja     1160 <main+0x30>
cmp    %esi,%edx
lea    0xe77(%rip),%rax
lea    0xe84(%rip),%rdi
cmove  %rax,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [18 x i8] c"Enter any number\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"%d is pallindrome\0A\0A\00"
@.str.3 = [24 x i8] c"%d is not pallindrome\0A\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* %4
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %5)
%8 = load i32, i32* %5
store i32 %8, i32* %2
br label %9
9: ; preds = %12, %0
%10 = load i32, i32* %2
%11 = icmp sgt i32 %10, 0
br i1 %11, label %12, label %21
12: ; preds = %9
%13 = load i32, i32* %2
%14 = srem i32 %13, 10
store i32 %14, i32* %3
%15 = load i32, i32* %4
%16 = mul nsw i32 %15, 10
%17 = load i32, i32* %3
%18 = add nsw i32 %16, %17
store i32 %18, i32* %4
%19 = load i32, i32* %2
%20 = sdiv i32 %19, 10
store i32 %20, i32* %2
br label %9
21: ; preds = %9
%22 = load i32, i32* %4
%23 = load i32, i32* %5
%24 = icmp eq i32 %22, %23
br i1 %24, label %25, label %28
25: ; preds = %21
%26 = load i32, i32* %5
%27 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %26)
br label %31
28: ; preds = %21
%29 = load i32, i32* %5
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %29)
br label %31
31: ; preds = %28, %25
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"%d is pallindrome\0A\0A\00"
@.str.3 = [24 x i8] c"%d is not pallindrome\0A\0A\00"
@str = [17 x i8] c"Enter any number\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 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 = icmp sgt i32 %5, 0
br i1 %6, label %7, label %15
7: ; preds = %0, %7
%8 = phi i32 [ %12, %7 ], [ 0, %0 ]
%9 = phi i32 [ %13, %7 ], [ %5, %0 ]
%10 = urem i32 %9, 10
%11 = mul nsw i32 %8, 10
%12 = add nsw i32 %11, %10
%13 = udiv i32 %9, 10
%14 = icmp ult i32 %9, 10
br i1 %14, label %15, label %7
15: ; preds = %7, %0
%16 = phi i32 [ 0, %0 ], [ %12, %7 ]
%17 = icmp eq i32 %16, %5
%18 = select i1 %17, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0)
%19 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) %18, i32 %5)
ret i32 0
}