#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*/ printf(char *, ...);
void show_help(char *cmd) {
  printf("Usage: %s [-D <device>] [-H <host>] [-P <port>] [-h]\n", cmd);
  printf("\tD: set device to open\n");
  printf("\tH: set host to connect\n");
  printf("\tP: set port to connect\n");
  printf("\th: show this help\n");
}


x86 assembly (clang, -O0):
<show_help>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xed9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf01(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf0b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf16(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf21(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<show_help>:
push   %rax
mov    %rdi,%rsi
lea    0xed5(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xefd(%rip),%rdi
call   1030 <puts@plt>
lea    0xf08(%rip),%rdi
call   1030 <puts@plt>
lea    0xf14(%rip),%rdi
call   1030 <puts@plt>
lea    0xf20(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [54 x i8] c"Usage: %s [-D <device>] [-H <host>] [-P <port>] [-h]\0A\00"
@.str.1 = [24 x i8] c"\09D: set device to open\0A\00"
@.str.2 = [25 x i8] c"\09H: set host to connect\0A\00"
@.str.3 = [25 x i8] c"\09P: set port to connect\0A\00"
@.str.4 = [20 x i8] c"\09h: show this help\0A\00"
define void @show_help(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([54 x i8], [54 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [54 x i8] c"Usage: %s [-D <device>] [-H <host>] [-P <port>] [-h]\0A\00"
@str = [23 x i8] c"\09D: set device to open\00"
@str.5 = [24 x i8] c"\09H: set host to connect\00"
@str.6 = [24 x i8] c"\09P: set port to connect\00"
@str.7 = [19 x i8] c"\09h: show this help\00"
define void @show_help(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([54 x i8], [54 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str.5, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str.6, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @str.7, i64 0, i64 0))
ret void
}