#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(int);
int main() {
  int c, state = 0;
  while ((c = getchar()) != EOF) {
    if (c == ' ' || c == '\n' || c == '\t') {
      if (state != 0)
        putchar('\n');
      state = 0;
    } else if (state == 0) {
      state = 1;
    }
    if (c != ' ')
      putchar(c);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2ea1(%rip),%rcx
cmp    (%rcx),%eax
je     11ba <main+0x9a>
cmpl   $0x20,-0x8(%rbp)
je     116d <main+0x4d>
cmpl   $0xa,-0x8(%rbp)
je     116d <main+0x4d>
cmpl   $0x9,-0x8(%rbp)
jne    118d <main+0x6d>
cmpl   $0x0,-0xc(%rbp)
je     1181 <main+0x61>
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x0,-0xc(%rbp)
jmp    11a3 <main+0x83>
cmpl   $0x0,-0xc(%rbp)
jne    119e <main+0x7e>
movl   $0x1,-0xc(%rbp)
jmp    11a3 <main+0x83>
cmpl   $0x20,-0x8(%rbp)
je     11b5 <main+0x95>
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
jmp    1136 <main+0x16>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb2(%rip),%r14
cmp    (%r14),%eax
jne    1146 <main+0x26>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret
mov    %eax,%ebx
mov    $0x1,%r15d
movabs $0x100000600,%r12
xor    %ebp,%ebp
jmp    1175 <main+0x55>
nopl   0x0(%rax)
mov    %ebx,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
call   1040 <getchar@plt>
mov    %eax,%ebx
cmp    (%r14),%eax
je     113b <main+0x1b>
cmp    $0x20,%ebx
ja     11a0 <main+0x80>
mov    %ebx,%eax
bt     %rax,%r12
jae    11a0 <main+0x80>
test   %ebp,%ebp
je     1190 <main+0x70>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %ebp,%ebp
cmp    $0x20,%ebx
je     1167 <main+0x47>
jmp    1160 <main+0x40>
nopl   0x0(%rax)
test   %ebp,%ebp
cmove  %r15d,%ebp
cmp    $0x20,%ebx
je     1167 <main+0x47>
jmp    1160 <main+0x40>

LLVM IR (-O0):
@EOF = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
br label %4
4: ; preds = %34, %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 %35
8: ; preds = %4
%9 = load i32, i32* %2
%10 = icmp eq i32 %9, 32
br i1 %10, label %17, label %11
11: ; preds = %8
%12 = load i32, i32* %2
%13 = icmp eq i32 %12, 10
br i1 %13, label %17, label %14
14: ; preds = %11
%15 = load i32, i32* %2
%16 = icmp eq i32 %15, 9
br i1 %16, label %17, label %23
17: ; preds = %14, %11, %8
%18 = load i32, i32* %3
%19 = icmp ne i32 %18, 0
br i1 %19, label %20, label %22
20: ; preds = %17
%21 = call i32 @putchar(i32 10)
br label %22
22: ; preds = %20, %17
store i32 0, i32* %3
br label %28
23: ; preds = %14
%24 = load i32, i32* %3
%25 = icmp eq i32 %24, 0
br i1 %25, label %26, label %27
26: ; preds = %23
store i32 1, i32* %3
br label %27
27: ; preds = %26, %23
br label %28
28: ; preds = %27, %22
%29 = load i32, i32* %2
%30 = icmp ne i32 %29, 32
br i1 %30, label %31, label %34
31: ; preds = %28
%32 = load i32, i32* %2
%33 = call i32 @putchar(i32 %32)
br label %34
34: ; preds = %31, %28
br label %4
35: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@EOF = global i32 0
define i32 @main() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %23, label %4
4: ; preds = %0, %19
%5 = phi i32 [ %20, %19 ], [ %1, %0 ]
%6 = phi i32 [ %15, %19 ], [ 0, %0 ]
switch i32 %5, label %11 [
i32 32, label %7
i32 10, label %7
i32 9, label %7
]
7: ; preds = %4, %4, %4
%8 = icmp eq i32 %6, 0
br i1 %8, label %14, label %9
9: ; preds = %7
%10 = tail call i32 @putchar(i32 10)
br label %14
11: ; preds = %4
%12 = icmp eq i32 %6, 0
%13 = select i1 %12, i32 1, i32 %6
br label %14
14: ; preds = %7, %9, %11
%15 = phi i32 [ %13, %11 ], [ 0, %9 ], [ 0, %7 ]
%16 = icmp eq i32 %5, 32
br i1 %16, label %19, label %17
17: ; preds = %14
%18 = tail call i32 @putchar(i32 %5)
br label %19
19: ; preds = %17, %14
%20 = tail call i32 (...) @getchar()
%21 = load i32, i32* @EOF
%22 = icmp eq i32 %20, %21
br i1 %22, label %23, label %4
23: ; preds = %19, %0
ret i32 0
}