#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 */
struct termios {
  int c_lflag;
  int *c_cc;
};

/* Variables and functions */
int ECHO;
int ICANON;
int /*<<< orphan*/ TCSANOW;
size_t VMIN;
size_t VTIME;
int /*<<< orphan*/ tcgetattr(int /*<<< orphan*/, struct termios *);
int /*<<< orphan*/ tcsetattr(int /*<<< orphan*/, int /*<<< orphan*/,
                             struct termios *);
void tty_raw_mode(void) {
  struct termios tty_attr;
  tcgetattr(0, &tty_attr);
  tty_attr.c_lflag &= (~(ICANON | ECHO));
  tty_attr.c_cc[VTIME] = 0;
  tty_attr.c_cc[VMIN] = 1;
  tcsetattr(0, TCSANOW, &tty_attr);
}


x86 assembly (clang, -O0):
<tty_raw_mode>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
xor    %edi,%edi
lea    -0x10(%rbp),%rsi
call   1030 <tcgetattr@plt>
mov    0x2e86(%rip),%rax
mov    (%rax),%eax
mov    0x2e9d(%rip),%rcx
or     (%rcx),%eax
xor    $0xffffffff,%eax
and    -0x10(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%rax
mov    0x2e6f(%rip),%rcx
mov    (%rcx),%rcx
movl   $0x0,(%rax,%rcx,4)
mov    -0x8(%rbp),%rax
mov    0x2e6a(%rip),%rcx
mov    (%rcx),%rcx
movl   $0x1,(%rax,%rcx,4)
mov    0x2e69(%rip),%rax
mov    (%rax),%esi
xor    %edi,%edi
lea    -0x10(%rbp),%rdx
call   1040 <tcsetattr@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<tty_raw_mode>:
push   %rbx
sub    $0x10,%rsp
mov    %rsp,%rbx
xor    %edi,%edi
mov    %rbx,%rsi
call   1030 <tcgetattr@plt>
mov    0x2e87(%rip),%rax
mov    0x2ea0(%rip),%rcx
mov    (%rcx),%ecx
or     (%rax),%ecx
not    %ecx
and    %ecx,(%rsp)
mov    0x8(%rsp),%rax
mov    0x2e73(%rip),%rcx
mov    (%rcx),%rcx
movl   $0x0,(%rax,%rcx,4)
mov    0x2e72(%rip),%rcx
mov    (%rcx),%rcx
movl   $0x1,(%rax,%rcx,4)
mov    0x2e71(%rip),%rax
mov    (%rax),%esi
xor    %edi,%edi
mov    %rbx,%rdx
call   1040 <tcsetattr@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
%struct.termios = type { i32, i32* }
@ICANON = global i32 0
@ECHO = global i32 0
@VTIME = global i64 0
@VMIN = global i64 0
@TCSANOW = global i32 0
define void @tty_raw_mode() {
%1 = alloca %struct.termios
%2 = call i32 @tcgetattr(i32 0, %struct.termios* %1)
%3 = load i32, i32* @ICANON
%4 = load i32, i32* @ECHO
%5 = or i32 %3, %4
%6 = xor i32 %5, -1
%7 = getelementptr inbounds %struct.termios, %struct.termios* %1, i32 0, i32 0
%8 = load i32, i32* %7
%9 = and i32 %8, %6
store i32 %9, i32* %7
%10 = getelementptr inbounds %struct.termios, %struct.termios* %1, i32 0, i32 1
%11 = load i32*, i32** %10
%12 = load i64, i64* @VTIME
%13 = getelementptr inbounds i32, i32* %11, i64 %12
store i32 0, i32* %13
%14 = getelementptr inbounds %struct.termios, %struct.termios* %1, i32 0, i32 1
%15 = load i32*, i32** %14
%16 = load i64, i64* @VMIN
%17 = getelementptr inbounds i32, i32* %15, i64 %16
store i32 1, i32* %17
%18 = load i32, i32* @TCSANOW
%19 = call i32 @tcsetattr(i32 0, i32 %18, %struct.termios* %1)
ret void
}

LLVM IR (-O2):
%struct.termios = type { i32, i32* }
@ICANON = global i32 0
@ECHO = global i32 0
@VTIME = global i64 0
@VMIN = global i64 0
@TCSANOW = global i32 0
define void @tty_raw_mode() {
%1 = alloca %struct.termios
%2 = bitcast %struct.termios* %1 to i8*
%3 = call i32 @tcgetattr(i32 0, %struct.termios* %1)
%4 = load i32, i32* @ICANON
%5 = load i32, i32* @ECHO
%6 = or i32 %5, %4
%7 = xor i32 %6, -1
%8 = getelementptr inbounds %struct.termios, %struct.termios* %1, i64 0, i32 0
%9 = load i32, i32* %8
%10 = and i32 %9, %7
store i32 %10, i32* %8
%11 = getelementptr inbounds %struct.termios, %struct.termios* %1, i64 0, i32 1
%12 = load i32*, i32** %11
%13 = load i64, i64* @VTIME
%14 = getelementptr inbounds i32, i32* %12, i64 %13
store i32 0, i32* %14
%15 = load i64, i64* @VMIN
%16 = getelementptr inbounds i32, i32* %12, i64 %15
store i32 1, i32* %16
%17 = load i32, i32* @TCSANOW
%18 = call i32 @tcsetattr(i32 0, i32 %17, %struct.termios* %1)
ret void
}