#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 EOF;
int getchar();
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ putchar(int);
main() {
  int c, blanks = 0, tabs = 0, newlines = 0;
  while ((c = getchar()) != EOF) {
    if (c == '\b') {
      printf("\\b");
    } else if (c == '\t') {
      printf("\\t");
    } else if (c == '\\') {
      printf("\\\\");
    } else {
      putchar(c);
    }
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    $0x0,%al
call   1050 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2e83(%rip),%rcx
cmp    (%rcx),%eax
je     11d5 <main+0xa5>
cmpl   $0x8,-0x8(%rbp)
jne    1188 <main+0x58>
lea    0xe82(%rip),%rdi
call   1040 <printf@plt>
jmp    11d0 <main+0xa0>
cmpl   $0x9,-0x8(%rbp)
jne    11a3 <main+0x73>
lea    0xe6a(%rip),%rdi
call   1040 <printf@plt>
jmp    11cb <main+0x9b>
cmpl   $0x5c,-0x8(%rbp)
jne    11be <main+0x8e>
lea    0xe52(%rip),%rdi
call   1040 <printf@plt>
jmp    11c6 <main+0x96>
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
jmp    11cb <main+0x9b>
jmp    11d0 <main+0xa0>
jmp    1154 <main+0x24>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
xor    %eax,%eax
call   1050 <getchar@plt>
mov    0x2ea2(%rip),%rbx
cmp    (%rbx),%eax
jne    1158 <main+0x28>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret
lea    0xea7(%rip),%r14
lea    0xe9d(%rip),%r12
lea    0xe93(%rip),%r15
jmp    1183 <main+0x53>
nop
mov    %r12,%rdi
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
cmp    (%rbx),%eax
je     114a <main+0x1a>
cmp    $0x5c,%eax
je     11a0 <main+0x70>
cmp    $0x9,%eax
je     1170 <main+0x40>
cmp    $0x8,%eax
jne    11b0 <main+0x80>
mov    %r15,%rdi
jmp    1173 <main+0x43>
nopw   0x0(%rax,%rax,1)
mov    %r14,%rdi
jmp    1173 <main+0x43>
cs nopw 0x0(%rax,%rax,1)
nop
mov    %eax,%edi
call   1030 <putchar@plt>
jmp    1178 <main+0x48>

LLVM IR (-O0):
@EOF = global i32 0
@.str = [3 x i8] c"\\b\00"
@.str.1 = [3 x i8] c"\\t\00"
@.str.2 = [3 x i8] c"\\\\\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* %3
store i32 0, i32* %4
store i32 0, i32* %5
br label %6
6: ; preds = %30, %0
%7 = call i32 (...) @getchar()
store i32 %7, i32* %2
%8 = load i32, i32* @EOF
%9 = icmp ne i32 %7, %8
br i1 %9, label %10, label %31
10: ; preds = %6
%11 = load i32, i32* %2
%12 = icmp eq i32 %11, 8
br i1 %12, label %13, label %15
13: ; preds = %10
%14 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
br label %30
15: ; preds = %10
%16 = load i32, i32* %2
%17 = icmp eq i32 %16, 9
br i1 %17, label %18, label %20
18: ; preds = %15
%19 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
br label %29
20: ; preds = %15
%21 = load i32, i32* %2
%22 = icmp eq i32 %21, 92
br i1 %22, label %23, label %25
23: ; preds = %20
%24 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %28
25: ; preds = %20
%26 = load i32, i32* %2
%27 = call i32 @putchar(i32 %26)
br label %28
28: ; preds = %25, %23
br label %29
29: ; preds = %28, %18
br label %30
30: ; preds = %29, %13
br label %6
31: ; preds = %6
%32 = load i32, i32* %1
ret i32 %32
}

LLVM IR (-O2):
@EOF = global i32 0
@.str = [3 x i8] c"\\b\00"
@.str.1 = [3 x i8] c"\\t\00"
@.str.2 = [3 x i8] c"\\\\\00"
define i32 @main() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %18, label %4
4: ; preds = %0, %14
%5 = phi i32 [ %15, %14 ], [ %1, %0 ]
switch i32 %5, label %12 [
i32 8, label %6
i32 9, label %8
i32 92, label %10
]
6: ; preds = %4
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
br label %14
8: ; preds = %4
%9 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
br label %14
10: ; preds = %4
%11 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %14
12: ; preds = %4
%13 = tail call i32 @putchar(i32 %5)
br label %14
14: ; preds = %8, %12, %10, %6
%15 = tail call i32 (...) @getchar()
%16 = load i32, i32* @EOF
%17 = icmp eq i32 %15, %16
br i1 %17, label %18, label %4
18: ; preds = %14, %0
ret i32 0
}