#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 */
char EOF;
char getchar();
int /*<<< orphan*/ putchar(char);
main() {
  int state;
  state = 0;
  char c;
  while ((c = getchar()) != EOF) {
    if (c == '\t' || c == ' ') {
      if (state == 0) {
        state = 1;
        putchar(' ');
      }
    } else {
      putchar(c);
      state = 0;
    }
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %al,-0x9(%rbp)
movsbl %al,%eax
mov    0x2e9e(%rip),%rcx
movsbl (%rcx),%ecx
cmp    %ecx,%eax
je     11a4 <main+0x84>
movsbl -0x9(%rbp),%eax
cmp    $0x9,%eax
je     116f <main+0x4f>
movsbl -0x9(%rbp),%eax
cmp    $0x20,%eax
jne    118f <main+0x6f>
cmpl   $0x0,-0x8(%rbp)
jne    118a <main+0x6a>
movl   $0x1,-0x8(%rbp)
mov    $0x20,%edi
call   1030 <putchar@plt>
jmp    119f <main+0x7f>
movsbl -0x9(%rbp),%edi
call   1030 <putchar@plt>
movl   $0x0,-0x8(%rbp)
jmp    1136 <main+0x16>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb7(%rip),%rbx
cmp    (%rbx),%al
jne    113e <main+0x1e>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret
xor    %ecx,%ecx
jmp    1167 <main+0x47>
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
mov    $0x20,%al
movsbl %al,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
call   1040 <getchar@plt>
mov    %ebp,%ecx
cmp    (%rbx),%al
je     1135 <main+0x15>
cmp    $0x20,%al
je     1171 <main+0x51>
xor    %ebp,%ebp
cmp    $0x9,%al
jne    1152 <main+0x32>
mov    $0x1,%ebp
test   %ecx,%ecx
jne    115a <main+0x3a>
jmp    1150 <main+0x30>

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

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