#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 *);
char *chomp(char *line) {
  int i, l;
  l = strlen(line);
  for (i = 0; i < l; i++) {
    if (line[i] == '\n' || line[i] == '\r') {
      line[i] = '\0';
      break;
    }
  }
  return line;
}


x86 assembly (clang, -O0):
<chomp>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,-0x10(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x10(%rbp),%eax
jge    1189 <chomp+0x79>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0xa,%eax
je     1165 <chomp+0x55>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0xd,%eax
jne    1176 <chomp+0x66>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movb   $0x0,(%rax,%rcx,1)
jmp    1189 <chomp+0x79>
jmp    117b <chomp+0x6b>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    112f <chomp+0x1f>
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<chomp>:
push   %rbx
mov    %rdi,%rbx
call   1030 <strlen@plt>
test   %eax,%eax
jle    114d <chomp+0x3d>
mov    %eax,%eax
xor    %ecx,%ecx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
movzbl (%rbx,%rcx,1),%edx
cmp    $0xd,%dl
je     1149 <chomp+0x39>
cmp    $0xa,%dl
je     1149 <chomp+0x39>
add    $0x1,%rcx
cmp    %rcx,%rax
jne    1130 <chomp+0x20>
jmp    114d <chomp+0x3d>
movb   $0x0,(%rbx,%rcx,1)
mov    %rbx,%rax
pop    %rbx
ret

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

LLVM IR (-O2):
define i8* @chomp(i8* returned %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = icmp sgt i32 %2, 0
br i1 %3, label %4, label %16
4: ; preds = %1
%5 = zext i32 %2 to i64
br label %6
6: ; preds = %4, %13
%7 = phi i64 [ 0, %4 ], [ %14, %13 ]
%8 = getelementptr inbounds i8, i8* %0, i64 %7
%9 = load i8, i8* %8
switch i8 %9, label %13 [
i8 10, label %10
i8 13, label %10
]
10: ; preds = %6, %6
%11 = and i64 %7, 4294967295
%12 = getelementptr inbounds i8, i8* %0, i64 %11
store i8 0, i8* %12
br label %16
13: ; preds = %6
%14 = add nuw nsw i64 %7, 1
%15 = icmp eq i64 %14, %5
br i1 %15, label %16, label %6
16: ; preds = %13, %1, %10
ret i8* %0
}