#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 argc, char *argv[]) {
  int c, spaceseen;
  while ((c = getchar()) != EOF) {
    if (c == ' ') {
      if (spaceseen == 1) {
        continue;
      } else {
        spaceseen = 1;
      }
    } else {
      spaceseen = 0;
    }
    putchar(c);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x14(%rbp)
mov    0x2ea1(%rip),%rcx
cmp    (%rcx),%eax
je     1188 <main+0x68>
cmpl   $0x20,-0x14(%rbp)
jne    1174 <main+0x54>
cmpl   $0x1,-0x18(%rbp)
jne    1168 <main+0x48>
jmp    1136 <main+0x16>
movl   $0x1,-0x18(%rbp)
jmp    117b <main+0x5b>
movl   $0x0,-0x18(%rbp)
mov    -0x14(%rbp),%edi
call   1030 <putchar@plt>
jmp    1136 <main+0x16>
xor    %eax,%eax
add    $0x20,%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),%r14
cmp    (%r14),%eax
jne    113e <main+0x1e>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
jmp    1155 <main+0x35>
mov    %eax,%edi
call   1030 <putchar@plt>
mov    %ebp,%ebx
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%r14),%eax
je     1137 <main+0x17>
mov    $0x0,%ebp
cmp    $0x20,%eax
jne    1140 <main+0x20>
mov    $0x1,%ebp
cmp    $0x1,%ebx
mov    $0x1,%ebx
jne    1140 <main+0x20>
jmp    1149 <main+0x29>

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

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