#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);
int main(void) {
  int c;
  int newline = 0;
  while ((c = getchar()) != EOF) {
    if (c == ' ' || c == '\n' || c == '\t') {
      if (!newline) {
        putchar('\n');
        newline = 1;
      }
    } else {
      putchar(c);
      newline = 0;
    }
  }
  printf("\n");
}


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   1050 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2e91(%rip),%rcx
cmp    (%rcx),%eax
je     11b1 <main+0x81>
cmpl   $0x20,-0x8(%rbp)
je     117d <main+0x4d>
cmpl   $0xa,-0x8(%rbp)
je     117d <main+0x4d>
cmpl   $0x9,-0x8(%rbp)
jne    119d <main+0x6d>
cmpl   $0x0,-0xc(%rbp)
jne    1198 <main+0x68>
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x1,-0xc(%rbp)
jmp    11ac <main+0x7c>
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
movl   $0x0,-0xc(%rbp)
jmp    1146 <main+0x16>
lea    0xe48(%rip),%rdi
call   1040 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb6(%rip),%rbx
cmp    (%rbx),%eax
jne    1147 <main+0x27>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
movabs $0x100000600,%r14
xor    %ecx,%ecx
jmp    1174 <main+0x54>
cs nopw 0x0(%rax,%rax,1)
nop
mov    %eax,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
call   1040 <getchar@plt>
mov    %ebp,%ecx
cmp    (%rbx),%eax
je     1136 <main+0x16>
xor    %ebp,%ebp
cmp    $0x20,%eax
ja     1160 <main+0x40>
mov    %eax,%edx
bt     %rdx,%r14
jae    1160 <main+0x40>
mov    $0x1,%ebp
test   %ecx,%ecx
jne    1167 <main+0x47>
mov    $0xa,%eax
jmp    1160 <main+0x40>

LLVM IR (-O0):
@EOF = global i32 0
@.str = [2 x i8] c"\0A\00"
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 = %26, %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 %27
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 %22, label %20
20: ; preds = %17
%21 = call i32 @putchar(i32 10)
store i32 1, i32* %3
br label %22
22: ; preds = %20, %17
br label %26
23: ; preds = %14
%24 = load i32, i32* %2
%25 = call i32 @putchar(i32 %24)
store i32 0, i32* %3
br label %26
26: ; preds = %23, %22
br label %4
27: ; preds = %4
%28 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%29 = load i32, i32* %1
ret i32 %29
}

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 %18, label %4
4: ; preds = %0, %13
%5 = phi i32 [ %15, %13 ], [ %1, %0 ]
%6 = phi i32 [ %14, %13 ], [ 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 %9, label %13
9: ; preds = %4, %7
%10 = phi i32 [ 10, %7 ], [ %5, %4 ]
%11 = phi i32 [ 1, %7 ], [ 0, %4 ]
%12 = tail call i32 @putchar(i32 %10)
br label %13
13: ; preds = %9, %7
%14 = phi i32 [ 1, %7 ], [ %11, %9 ]
%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 = %13, %0
%19 = tail call i32 @putchar(i32 10)
ret i32 0
}