#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 main(void) {
  int c;
  while ((c = getchar()) != EOF)
    if (c == '\t')
      printf("\\t");
    else if (c == '\b')
      printf("\\t");
    else if (c == '\\')
      printf("\\\\");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2ea8(%rip),%rcx
cmp    (%rcx),%eax
je     11a3 <main+0x83>
cmpl   $0x9,-0x8(%rbp)
jne    1163 <main+0x43>
lea    0xea7(%rip),%rdi
call   1030 <printf@plt>
jmp    119e <main+0x7e>
cmpl   $0x8,-0x8(%rbp)
jne    117e <main+0x5e>
lea    0xe8c(%rip),%rdi
call   1030 <printf@plt>
jmp    1199 <main+0x79>
cmpl   $0x5c,-0x8(%rbp)
jne    1194 <main+0x74>
lea    0xe74(%rip),%rdi
call   1030 <printf@plt>
jmp    1199 <main+0x79>
jmp    119e <main+0x7e>
jmp    112f <main+0xf>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb5(%rip),%r14
cmp    (%r14),%eax
jne    1140 <main+0x20>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret
lea    0xeb9(%rip),%rbx
lea    0xeb5(%rip),%r15
jmp    1161 <main+0x41>
call   1030 <printf@plt>
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%r14),%eax
je     1138 <main+0x18>
lea    -0x8(%rax),%ecx
mov    %rbx,%rdi
cmp    $0x2,%ecx
jb     1150 <main+0x30>
cmp    $0x5c,%eax
jne    1155 <main+0x35>
mov    %r15,%rdi
jmp    1150 <main+0x30>

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

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