#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 cnt_leading_cleared_bits(int);
int cnt_leading_set_bits(int);
int cnt_trailing_cleared_bits(int);
int cnt_trailing_set_bits(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int /*<<< orphan*/ showbit(int);
int main(void) {
  int num;
  printf("Enter a number to count the number of leading or trailing bits\n");
  scanf("%d", &num);
  showbit(num);
  printf(" No. of leading set bits: %d\n", cnt_leading_set_bits(num));
  printf("No. of leading clear bits: %d\n", cnt_leading_cleared_bits(num));
  printf("No. of trailing clear bits: %d\n", cnt_trailing_cleared_bits(num));
  printf("No. of trailing set bits are %d\n", cnt_trailing_set_bits(num));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe7a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeac(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1070 <scanf@plt>
mov    -0x8(%rbp),%edi
call   1080 <showbit@plt>
mov    -0x8(%rbp),%edi
call   1050 <cnt_leading_set_bits@plt>
mov    %eax,%esi
lea    0xe8d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
call   1060 <cnt_leading_cleared_bits@plt>
mov    %eax,%esi
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
call   1040 <cnt_trailing_cleared_bits@plt>
mov    %eax,%esi
lea    0xe9a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
call   1090 <cnt_trailing_set_bits@plt>
mov    %eax,%esi
lea    0xea2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xef9(%rip),%rdi
call   1030 <puts@plt>
lea    0xe6c(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1080 <scanf@plt>
mov    0x4(%rsp),%edi
call   1090 <showbit@plt>
mov    0x4(%rsp),%edi
call   1060 <cnt_leading_set_bits@plt>
lea    0xe4c(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%edi
call   1070 <cnt_leading_cleared_bits@plt>
lea    0xe51(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%edi
call   1050 <cnt_trailing_cleared_bits@plt>
lea    0xe57(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%edi
call   10a0 <cnt_trailing_set_bits@plt>
lea    0xe5e(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [64 x i8] c"Enter a number to count the number of leading or trailing bits\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [30 x i8] c" No. of leading set bits: %d\0A\00"
@.str.3 = [31 x i8] c"No. of leading clear bits: %d\0A\00"
@.str.4 = [32 x i8] c"No. of trailing clear bits: %d\0A\00"
@.str.5 = [33 x i8] c"No. of trailing set bits are %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([64 x i8], [64 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* %2)
%5 = load i32, i32* %2
%6 = call i32 @showbit(i32 %5)
%7 = load i32, i32* %2
%8 = call i32 @cnt_leading_set_bits(i32 %7)
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.2, i64 0, i64 0), i32 %8)
%10 = load i32, i32* %2
%11 = call i32 @cnt_leading_cleared_bits(i32 %10)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0), i32 %11)
%13 = load i32, i32* %2
%14 = call i32 @cnt_trailing_cleared_bits(i32 %13)
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.4, i64 0, i64 0), i32 %14)
%16 = load i32, i32* %2
%17 = call i32 @cnt_trailing_set_bits(i32 %16)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.5, i64 0, i64 0), i32 %17)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [30 x i8] c" No. of leading set bits: %d\0A\00"
@.str.3 = [31 x i8] c"No. of leading clear bits: %d\0A\00"
@.str.4 = [32 x i8] c"No. of trailing clear bits: %d\0A\00"
@.str.5 = [33 x i8] c"No. of trailing set bits are %d\0A\00"
@str = [63 x i8] c"Enter a number to count the number of leading or trailing bits\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([63 x i8], [63 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 @showbit(i32 %5)
%7 = load i32, i32* %1
%8 = call i32 @cnt_leading_set_bits(i32 %7)
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @.str.2, i64 0, i64 0), i32 %8)
%10 = load i32, i32* %1
%11 = call i32 @cnt_leading_cleared_bits(i32 %10)
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0), i32 %11)
%13 = load i32, i32* %1
%14 = call i32 @cnt_trailing_cleared_bits(i32 %13)
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @.str.4, i64 0, i64 0), i32 %14)
%16 = load i32, i32* %1
%17 = call i32 @cnt_trailing_set_bits(i32 %16)
%18 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @.str.5, i64 0, i64 0), i32 %17)
ret i32 0
}