#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 main(void) {
  int iLen = 0;
  unsigned int i = ~0;
  printf("\n*************************************************");
  printf("\n*\tPROGRAM TO CALCULATE WORD LENGTH\t*\n");
  printf("*************************************************");
  for (i = 1; i != 0; i = i << 1) {
    iLen++;
  }
  printf("\n\nThe Word length of the host machine is %d\n\n", iLen);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0xffffffff,-0xc(%rbp)
lea    0xecc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
je     117f <main+0x6f>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
mov    -0xc(%rbp),%eax
shl    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    115e <main+0x4e>
mov    -0x8(%rbp),%esi
lea    0xed1(%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    0xed8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xf2b(%rip),%rdi
call   1030 <puts@plt>
lea    0xebf(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xee3(%rip),%rdi
mov    $0x20,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [51 x i8] c"\0A*************************************************\00"
@.str.1 = [39 x i8] c"\0A*\09PROGRAM TO CALCULATE WORD LENGTH\09*\0A\00"
@.str.2 = [50 x i8] c"*************************************************\00"
@.str.3 = [46 x i8] c"\0A\0AThe Word length of the host machine is %d\0A\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 -1, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([50 x i8], [50 x i8]* @.str.2, i64 0, i64 0))
store i32 1, i32* %3
br label %7
7: ; preds = %13, %0
%8 = load i32, i32* %3
%9 = icmp ne i32 %8, 0
br i1 %9, label %10, label %16
10: ; preds = %7
%11 = load i32, i32* %2
%12 = add nsw i32 %11, 1
store i32 %12, i32* %2
br label %13
13: ; preds = %10
%14 = load i32, i32* %3
%15 = shl i32 %14, 1
store i32 %15, i32* %3
br label %7
16: ; preds = %7
%17 = load i32, i32* %2
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.3, i64 0, i64 0), i32 %17)
ret i32 0
}

LLVM IR (-O2):
@.str = [51 x i8] c"\0A*************************************************\00"
@.str.2 = [50 x i8] c"*************************************************\00"
@.str.3 = [46 x i8] c"\0A\0AThe Word length of the host machine is %d\0A\0A\00"
@str = [38 x i8] c"\0A*\09PROGRAM TO CALCULATE WORD LENGTH\09*\00"
define i32 @main() {
%1 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([51 x i8], [51 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @str, i64 0, i64 0))
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @.str.3, i64 0, i64 0), i32 32)
ret i32 0
}