#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 /*<<< orphan*/ exit(int);
int /*<<< orphan*/ printf(char *, ...);
void display_usage(const char *program) {
  printf(
      "Usage: %s [ OPTIONS ]\n"
      "Options:\n"
      "[-p, --port LISTEN_PORT]\n"
      "[-S, --scheduler] Scheduler Algorithm (OTHER, BATCH, IDLE, FIFO, RR)\n"
      "[-P, --priority NUMBER] Realtime priority between 0.99 for realtime "
      "schedulers\n"
      "[-r, --receive-buffer-size SIZE]\n"
      "[-m, --method SELECT|EPOLL|THREAD]\n\n",
      program);
  printf("Scheduler Types can be: OTHER (default), BATCH, IDLE, FIFO, RR\n");
  printf("FIFO and RR are realtime schedulers\n");
  exit(1);
}


x86 assembly (clang, -O0):
<display_usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xec9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfcd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfff(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x1,%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<display_usage>:
push   %rax
mov    %rdi,%rsi
lea    0xec5(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xfc9(%rip),%rdi
call   1030 <puts@plt>
lea    0xffc(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@.str = [274 x i8] c"Usage: %s [ OPTIONS ]\0AOptions:\0A[-p, --port LISTEN_PORT]\0A[-S, --scheduler] Scheduler Algorithm (OTHER, BATCH, IDLE, FIFO, RR)\0A[-P, --priority NUMBER] Realtime priority between 0.99 for realtime schedulers\0A[-r, --receive-buffer-size SIZE]\0A[-m, --method SELECT|EPOLL|THREAD]\0A\0A\00"
@.str.1 = [64 x i8] c"Scheduler Types can be: OTHER (default), BATCH, IDLE, FIFO, RR\0A\00"
@.str.2 = [37 x i8] c"FIFO and RR are realtime schedulers\0A\00"
define void @display_usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([274 x i8], [274 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([64 x i8], [64 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 @exit(i32 1)
unreachable
}

LLVM IR (-O2):
@.str = [274 x i8] c"Usage: %s [ OPTIONS ]\0AOptions:\0A[-p, --port LISTEN_PORT]\0A[-S, --scheduler] Scheduler Algorithm (OTHER, BATCH, IDLE, FIFO, RR)\0A[-P, --priority NUMBER] Realtime priority between 0.99 for realtime schedulers\0A[-r, --receive-buffer-size SIZE]\0A[-m, --method SELECT|EPOLL|THREAD]\0A\0A\00"
@str = [63 x i8] c"Scheduler Types can be: OTHER (default), BATCH, IDLE, FIFO, RR\00"
@str.3 = [36 x i8] c"FIFO and RR are realtime schedulers\00"
define void @display_usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([274 x i8], [274 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([63 x i8], [63 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str.3, i64 0, i64 0))
%5 = tail call i32 @exit(i32 1)
unreachable
}