#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 *);
int rm_return(char *s) {
  while (s[strlen(s) - 1] == '\n' || s[strlen(s) - 1] == '\r') {
    s[strlen(s) - 1] = '\0';
  }
  return 0;
}


x86 assembly (clang, -O0):
<rm_return>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x18(%rbp),%rax
sub    $0x1,%ecx
movslq %ecx,%rcx
movsbl (%rax,%rcx,1),%ecx
mov    $0x1,%al
cmp    $0xa,%ecx
mov    %al,-0x9(%rbp)
je     1175 <rm_return+0x65>
mov    -0x8(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x20(%rbp),%rax
sub    $0x1,%ecx
movslq %ecx,%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0xd,%eax
sete   %al
mov    %al,-0x9(%rbp)
mov    -0x9(%rbp),%al
test   $0x1,%al
jne    1185 <rm_return+0x75>
jmp    11ab <rm_return+0x9b>
mov    -0x8(%rbp),%rax
mov    %rax,-0x28(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x28(%rbp),%rax
sub    $0x1,%ecx
movslq %ecx,%rcx
movb   $0x0,(%rax,%rcx,1)
jmp    111c <rm_return+0xc>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<rm_return>:
push   %rbx
mov    %rdi,%rbx
jmp    112f <rm_return+0x1f>
cs nopw 0x0(%rax,%rax,1)
mov    %rbx,%rdi
call   1030 <strlen@plt>
cltq
movb   $0x0,-0x1(%rax,%rbx,1)
mov    %rbx,%rdi
call   1030 <strlen@plt>
cltq
cmpb   $0xa,-0x1(%rax,%rbx,1)
je     1120 <rm_return+0x10>
mov    %rbx,%rdi
call   1030 <strlen@plt>
cltq
cmpb   $0xd,-0x1(%rax,%rbx,1)
je     1120 <rm_return+0x10>
xor    %eax,%eax
pop    %rbx
ret

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

LLVM IR (-O2):
define i32 @rm_return(i8* %0) {
br label %2
2: ; preds = %16, %1
%3 = tail call i32 @strlen(i8* %0)
%4 = add nsw i32 %3, -1
%5 = sext i32 %4 to i64
%6 = getelementptr inbounds i8, i8* %0, i64 %5
%7 = load i8, i8* %6
%8 = icmp eq i8 %7, 10
br i1 %8, label %16, label %9
9: ; preds = %2
%10 = tail call i32 @strlen(i8* %0)
%11 = add nsw i32 %10, -1
%12 = sext i32 %11 to i64
%13 = getelementptr inbounds i8, i8* %0, i64 %12
%14 = load i8, i8* %13
%15 = icmp eq i8 %14, 13
br i1 %15, label %16, label %21
16: ; preds = %2, %9
%17 = tail call i32 @strlen(i8* %0)
%18 = add nsw i32 %17, -1
%19 = sext i32 %18 to i64
%20 = getelementptr inbounds i8, i8* %0, i64 %19
store i8 0, i8* %20
br label %2
21: ; preds = %9
ret i32 0
}