#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*/ putchar(char);
int showin() {
  int ch;
  int state = 0;
  while ((ch = getchar()) != EOF) {
    if ((ch != ' ') && (ch != '\n') && (ch != '\t')) {
      putchar(ch);
      state = 1;
    } else if (state == 1) {
      putchar('\n');
      state = 0;
    }
  }
}


x86 assembly (clang, -O0):
<showin>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0xc(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2ea8(%rip),%rcx
cmp    (%rcx),%eax
je     11a2 <showin+0x82>
cmpl   $0x20,-0x8(%rbp)
je     117d <showin+0x5d>
cmpl   $0xa,-0x8(%rbp)
je     117d <showin+0x5d>
cmpl   $0x9,-0x8(%rbp)
je     117d <showin+0x5d>
mov    -0x8(%rbp),%eax
movsbl %al,%edi
call   1030 <putchar@plt>
movl   $0x1,-0xc(%rbp)
jmp    119d <showin+0x7d>
cmpl   $0x1,-0xc(%rbp)
jne    1198 <showin+0x78>
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x0,-0xc(%rbp)
jmp    119d <showin+0x7d>
jmp    112f <showin+0xf>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<showin>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb3(%rip),%r15
cmp    (%r15),%eax
jne    1145 <showin+0x25>
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret
movabs $0x100000600,%r14
xor    %ebp,%ebp
jmp    117b <showin+0x5b>
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    $0x1,%ebx
movsbl %al,%edi
call   1030 <putchar@plt>
mov    %ebx,%ebp
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%r15),%eax
je     113a <showin+0x1a>
cmp    $0x20,%eax
ja     1160 <showin+0x40>
mov    %eax,%ecx
bt     %rcx,%r14
jae    1160 <showin+0x40>
xor    %ebx,%ebx
mov    $0xa,%al
cmp    $0x1,%ebp
mov    $0x0,%ebp
je     1165 <showin+0x45>
jmp    116f <showin+0x4f>

LLVM IR (-O0):
@EOF = global i32 0
define i32 @showin() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %3
br label %4
4: ; preds = %27, %0
%5 = call i32 (...) @getchar()
store i32 %5, i32* %2
%6 = load i32, i32* @EOF
%7 = icmp ne i32 %5, %6
br i1 %7, label %8, label %28
8: ; preds = %4
%9 = load i32, i32* %2
%10 = icmp ne i32 %9, 32
br i1 %10, label %11, label %21
11: ; preds = %8
%12 = load i32, i32* %2
%13 = icmp ne i32 %12, 10
br i1 %13, label %14, label %21
14: ; preds = %11
%15 = load i32, i32* %2
%16 = icmp ne i32 %15, 9
br i1 %16, label %17, label %21
17: ; preds = %14
%18 = load i32, i32* %2
%19 = trunc i32 %18 to i8
%20 = call i32 @putchar(i8 signext %19)
store i32 1, i32* %3
br label %27
21: ; preds = %14, %11, %8
%22 = load i32, i32* %3
%23 = icmp eq i32 %22, 1
br i1 %23, label %24, label %26
24: ; preds = %21
%25 = call i32 @putchar(i8 signext 10)
store i32 0, i32* %3
br label %26
26: ; preds = %24, %21
br label %27
27: ; preds = %26, %17
br label %4
28: ; preds = %4
%29 = load i32, i32* %1
ret i32 %29
}

LLVM IR (-O2):
@EOF = global i32 0
define i32 @showin() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %20, label %4
4: ; preds = %0, %15
%5 = phi i32 [ %17, %15 ], [ %1, %0 ]
%6 = phi i32 [ %16, %15 ], [ 0, %0 ]
switch i32 %5, label %7 [
i32 32, label %9
i32 10, label %9
i32 9, label %9
]
7: ; preds = %4
%8 = trunc i32 %5 to i8
br label %11
9: ; preds = %4, %4, %4
%10 = icmp eq i32 %6, 1
br i1 %10, label %11, label %15
11: ; preds = %9, %7
%12 = phi i8 [ %8, %7 ], [ 10, %9 ]
%13 = phi i32 [ 1, %7 ], [ 0, %9 ]
%14 = tail call i32 @putchar(i8 signext %12)
br label %15
15: ; preds = %11, %9
%16 = phi i32 [ 0, %9 ], [ %13, %11 ]
%17 = tail call i32 (...) @getchar()
%18 = load i32, i32* @EOF
%19 = icmp eq i32 %17, %18
br i1 %19, label %20, label %4
20: ; preds = %15, %0
ret i32 undef
}