#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 strlen(char *);
void strip(char *v_line) {
  int len;
  int pos = 0;
  len = strlen(v_line);
  for (pos = len - 1; pos > 0; pos--) {
    if (v_line[pos] == '\x0a' || v_line[pos] == '\x0d') {
      v_line[pos] = '\x00';
    }
  }
}


x86 assembly (clang, -O0):
<strip>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,-0xc(%rbp)
mov    -0xc(%rbp),%eax
sub    $0x1,%eax
mov    %eax,-0x10(%rbp)
cmpl   $0x0,-0x10(%rbp)
jle    118b <strip+0x7b>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0xa,%eax
je     116c <strip+0x5c>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0xd,%eax
jne    1178 <strip+0x68>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
jmp    117d <strip+0x6d>
mov    -0x10(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0x10(%rbp)
jmp    1138 <strip+0x28>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<strip>:
push   %rbx
mov    %rdi,%rbx
call   1030 <strlen@plt>
cmp    $0x2,%eax
jl     1151 <strip+0x41>
mov    %eax,%eax
add    $0x1,%rax
jmp    113e <strip+0x2e>
cs nopw 0x0(%rax,%rax,1)
movb   $0x0,(%rbx,%rcx,1)
add    $0xffffffffffffffff,%rax
cmp    $0x2,%rax
jbe    1151 <strip+0x41>
lea    -0x2(%rax),%ecx
movzbl (%rbx,%rcx,1),%edx
cmp    $0xd,%dl
je     1130 <strip+0x20>
cmp    $0xa,%dl
je     1130 <strip+0x20>
jmp    1134 <strip+0x24>
pop    %rbx
ret

LLVM IR (-O0):
define void @strip(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
%4 = alloca i32
store i8* %0, i8** %2
store i32 0, i32* %4
%5 = load i8*, i8** %2
%6 = call i32 @strlen(i8* %5)
store i32 %6, i32* %3
%7 = load i32, i32* %3
%8 = sub nsw i32 %7, 1
store i32 %8, i32* %4
br label %9
9: ; preds = %34, %1
%10 = load i32, i32* %4
%11 = icmp sgt i32 %10, 0
br i1 %11, label %12, label %37
12: ; preds = %9
%13 = load i8*, i8** %2
%14 = load i32, i32* %4
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i8, i8* %13, i64 %15
%17 = load i8, i8* %16
%18 = sext i8 %17 to i32
%19 = icmp eq i32 %18, 10
br i1 %19, label %28, label %20
20: ; preds = %12
%21 = load i8*, i8** %2
%22 = load i32, i32* %4
%23 = sext i32 %22 to i64
%24 = getelementptr inbounds i8, i8* %21, i64 %23
%25 = load i8, i8* %24
%26 = sext i8 %25 to i32
%27 = icmp eq i32 %26, 13
br i1 %27, label %28, label %33
28: ; preds = %20, %12
%29 = load i8*, i8** %2
%30 = load i32, i32* %4
%31 = sext i32 %30 to i64
%32 = getelementptr inbounds i8, i8* %29, i64 %31
store i8 0, i8* %32
br label %33
33: ; preds = %28, %20
br label %34
34: ; preds = %33
%35 = load i32, i32* %4
%36 = add nsw i32 %35, -1
store i32 %36, i32* %4
br label %9
37: ; preds = %9
ret void
}

LLVM IR (-O2):
define void @strip(i8* %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = icmp sgt i32 %2, 1
br i1 %3, label %4, label %15
4: ; preds = %1
%5 = zext i32 %2 to i64
br label %6
6: ; preds = %4, %13
%7 = phi i64 [ %5, %4 ], [ %8, %13 ]
%8 = add nsw i64 %7, -1
%9 = and i64 %8, 4294967295
%10 = getelementptr inbounds i8, i8* %0, i64 %9
%11 = load i8, i8* %10
switch i8 %11, label %13 [
i8 10, label %12
i8 13, label %12
]
12: ; preds = %6, %6
store i8 0, i8* %10
br label %13
13: ; preds = %6, %12
%14 = icmp ugt i64 %7, 2
br i1 %14, label %6, label %15
15: ; preds = %13, %1
ret void
}