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


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     11ab <main+0x8b>
cmpl   $0x20,-0x8(%rbp)
je     116d <main+0x4d>
cmpl   $0x9,-0x8(%rbp)
je     116d <main+0x4d>
cmpl   $0xa,-0x8(%rbp)
jne    118d <main+0x6d>
cmpl   $0x0,-0xc(%rbp)
je     1188 <main+0x68>
movl   $0x0,-0xc(%rbp)
mov    $0xa,%edi
call   1030 <putchar@plt>
jmp    11a6 <main+0x86>
cmpl   $0x0,-0xc(%rbp)
jne    119e <main+0x7e>
movl   $0x1,-0xc(%rbp)
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
jmp    1136 <main+0x16>
mov    -0x4(%rbp),%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),%r12
cmp    (%r12),%eax
jne    1147 <main+0x27>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret
mov    $0x1,%r14d
movabs $0x100000600,%r15
xor    %ebp,%ebp
jmp    117e <main+0x5e>
nopl   0x0(%rax,%rax,1)
test   %ebp,%ebp
cmove  %r14d,%ebp
mov    %ebp,%ebx
mov    %eax,%edi
call   1030 <putchar@plt>
mov    %ebx,%ebp
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%r12),%eax
je     113c <main+0x1c>
cmp    $0x20,%eax
ja     1160 <main+0x40>
mov    %eax,%ecx
bt     %rcx,%r15
jae    1160 <main+0x40>
mov    $0xa,%eax
xor    %ebx,%ebx
test   %ebp,%ebp
mov    $0x0,%ebp
jne    1168 <main+0x48>
jmp    1171 <main+0x51>

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 = %30, %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 %31
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, 9
br i1 %13, label %17, label %14
14: ; preds = %11
%15 = load i32, i32* %2
%16 = icmp eq i32 %15, 10
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
store i32 0, i32* %3
%21 = call i32 @putchar(i32 10)
br label %22
22: ; preds = %20, %17
br label %30
23: ; preds = %14
%24 = load i32, i32* %3
%25 = icmp ne i32 %24, 0
br i1 %25, label %27, label %26
26: ; preds = %23
store i32 1, i32* %3
br label %27
27: ; preds = %26, %23
%28 = load i32, i32* %2
%29 = call i32 @putchar(i32 %28)
br label %30
30: ; preds = %27, %22
br label %4
31: ; preds = %4
%32 = load i32, i32* %1
ret i32 %32
}

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 %21, label %4
4: ; preds = %0, %16
%5 = phi i32 [ %18, %16 ], [ %1, %0 ]
%6 = phi i32 [ %17, %16 ], [ 0, %0 ]
switch i32 %5, label %9 [
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 %16, label %12
9: ; preds = %4
%10 = icmp eq i32 %6, 0
%11 = select i1 %10, i32 1, i32 %6
br label %12
12: ; preds = %7, %9
%13 = phi i32 [ %5, %9 ], [ 10, %7 ]
%14 = phi i32 [ %11, %9 ], [ 0, %7 ]
%15 = tail call i32 @putchar(i32 %13)
br label %16
16: ; preds = %12, %7
%17 = phi i32 [ 0, %7 ], [ %14, %12 ]
%18 = tail call i32 (...) @getchar()
%19 = load i32, i32* @EOF
%20 = icmp eq i32 %18, %19
br i1 %20, label %21, label %4
21: ; preds = %16, %0
ret i32 0
}