#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);
int main() {
  int nc, lc, c;
  nc = lc = 0;
  for (nc = 0; (c = getchar()) != EOF; nc++) {
    if (c == '\n')
      lc++;
  }
  printf("%d\n", lc);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0x8(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x10(%rbp)
mov    0x2e93(%rip),%rcx
cmp    (%rcx),%eax
je     1183 <main+0x63>
cmpl   $0xa,-0x10(%rbp)
jne    1170 <main+0x50>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1175 <main+0x55>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1144 <main+0x24>
mov    -0xc(%rbp),%esi
lea    0xe73(%rip),%rdi
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
xor    %ebx,%ebx
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb4(%rip),%r14
cmp    (%r14),%eax
je     1156 <main+0x36>
xor    %ebx,%ebx
nopl   0x0(%rax,%rax,1)
xor    %ecx,%ecx
cmp    $0xa,%eax
sete   %cl
add    %ecx,%ebx
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%r14),%eax
jne    1140 <main+0x20>
lea    0xea3(%rip),%rdi
mov    %ebx,%esi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@EOF = global i32 0
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
store i32 0, i32* %2
store i32 0, i32* %2
br label %5
5: ; preds = %16, %0
%6 = call i32 (...) @getchar()
store i32 %6, i32* %4
%7 = load i32, i32* @EOF
%8 = icmp ne i32 %6, %7
br i1 %8, label %9, label %19
9: ; preds = %5
%10 = load i32, i32* %4
%11 = icmp eq i32 %10, 10
br i1 %11, label %12, label %15
12: ; preds = %9
%13 = load i32, i32* %3
%14 = add nsw i32 %13, 1
store i32 %14, i32* %3
br label %15
15: ; preds = %12, %9
br label %16
16: ; preds = %15
%17 = load i32, i32* %2
%18 = add nsw i32 %17, 1
store i32 %18, i32* %2
br label %5
19: ; preds = %5
%20 = load i32, i32* %3
%21 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %20)
%22 = load i32, i32* %1
ret i32 %22
}

LLVM IR (-O2):
@EOF = global i32 0
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %13, label %4
4: ; preds = %0, %4
%5 = phi i32 [ %10, %4 ], [ %1, %0 ]
%6 = phi i32 [ %9, %4 ], [ 0, %0 ]
%7 = icmp eq i32 %5, 10
%8 = zext i1 %7 to i32
%9 = add nuw nsw i32 %6, %8
%10 = tail call i32 (...) @getchar()
%11 = load i32, i32* @EOF
%12 = icmp eq i32 %10, %11
br i1 %12, label %13, label %4
13: ; preds = %4, %0
%14 = phi i32 [ 0, %0 ], [ %9, %4 ]
%15 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %14)
ret i32 0
}