#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 *, unsigned int *, ...);
int setbits(unsigned int, unsigned int, unsigned int, unsigned int);
int main() {
  unsigned int x, y, p, n;
  printf("Please enter number x and y, separate by a space: ");
  scanf("%u %u", &x, &y);
  printf("Please enter the begin position: ");
  scanf("%d", &p);
  printf("Please enter number of bits: ");
  scanf("%d", &n);
  printf("The number after setbits is %u\n", setbits(x, p, n, y));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xedf(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xecf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee3(%rip),%rdi
lea    -0x10(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
lea    0xed4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec3(%rip),%rdi
lea    -0x14(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%esi
mov    -0x14(%rbp),%edx
mov    -0xc(%rbp),%ecx
call   1040 <setbits@plt>
mov    %eax,%esi
lea    0xebf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xec4(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee9(%rip),%rdi
lea    0xc(%rsp),%rsi
lea    0x8(%rsp),%rdx
xor    %eax,%eax
call   1050 <scanf@plt>
lea    0xed7(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeeb(%rip),%rbx
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <scanf@plt>
lea    0xed8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rsp,%rsi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <scanf@plt>
mov    0xc(%rsp),%edi
mov    0x4(%rsp),%esi
mov    (%rsp),%edx
mov    0x8(%rsp),%ecx
call   1040 <setbits@plt>
lea    0xec7(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [51 x i8] c"Please enter number x and y, separate by a space: \00"
@.str.1 = [6 x i8] c"%u %u\00"
@.str.2 = [34 x i8] c"Please enter the begin position: \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [30 x i8] c"Please enter number of bits: \00"
@.str.5 = [32 x i8] c"The number after setbits is %u\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
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str, i64 0, i64 0))
%7 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3)
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %4)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
%11 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %5)
%12 = load i32, i32* %2
%13 = load i32, i32* %4
%14 = load i32, i32* %5
%15 = load i32, i32* %3
%16 = call i32 @setbits(i32 %12, i32 %13, i32 %14, i32 %15)
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.5, i64 0, i64 0), i32 %16)
ret i32 0
}

LLVM IR (-O2):
@.str = [51 x i8] c"Please enter number x and y, separate by a space: \00"
@.str.1 = [6 x i8] c"%u %u\00"
@.str.2 = [34 x i8] c"Please enter the begin position: \00"
@.str.3 = [3 x i8] c"%d\00"
@.str.4 = [30 x i8] c"Please enter number of bits: \00"
@.str.5 = [32 x i8] c"The number after setbits is %u\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast i32* %3 to i8*
%8 = bitcast i32* %4 to i8*
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([51 x i8], [51 x i8]* @.str, i64 0, i64 0))
%10 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([34 x i8], [34 x i8]* @.str.2, i64 0, i64 0))
%12 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %3)
%13 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
%14 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i32* %4)
%15 = load i32, i32* %1
%16 = load i32, i32* %3
%17 = load i32, i32* %4
%18 = load i32, i32* %2
%19 = call i32 @setbits(i32 %15, i32 %16, i32 %17, i32 %18)
%20 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @.str.5, i64 0, i64 0), i32 %19)
ret i32 0
}