#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 print_help() {
  printf("usage：plz input the control num:\n");
  printf("0 adjust volume\n");
  printf("1 record source selcet\n");
  printf("2 mute or not\n");
  printf("3 adjust pcm out\n");
  printf("input mixer options:");
}


x86 assembly (clang, -O0):
<print_help>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xefd(%rip),%rdi
call   1030 <printf@plt>
lea    0xf02(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0e(%rip),%rdi
call   1030 <printf@plt>
lea    0xf11(%rip),%rdi
call   1030 <printf@plt>
lea    0xf17(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_help>:
push   %rax
lea    0xeed(%rip),%rdi
call   1030 <puts@plt>
lea    0xf04(%rip),%rdi
call   1030 <puts@plt>
lea    0xf08(%rip),%rdi
call   1030 <puts@plt>
lea    0xf13(%rip),%rdi
call   1030 <puts@plt>
lea    0xf15(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
pop    %rax
jmp    1040 <printf@plt>

LLVM IR (-O0):
@.str = [36 x i8] c"usage\EF\BC\9Aplz input the control num:\0A\00"
@.str.1 = [17 x i8] c"0 adjust volume\0A\00"
@.str.2 = [24 x i8] c"1 record source selcet\0A\00"
@.str.3 = [15 x i8] c"2 mute or not\0A\00"
@.str.4 = [18 x i8] c"3 adjust pcm out\0A\00"
@.str.5 = [21 x i8] c"input mixer options:\00"
define void @print_help() {
%1 = call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.5, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str.5 = [21 x i8] c"input mixer options:\00"
@str = [35 x i8] c"usage\EF\BC\9Aplz input the control num:\00"
@str.6 = [16 x i8] c"0 adjust volume\00"
@str.7 = [23 x i8] c"1 record source selcet\00"
@str.8 = [14 x i8] c"2 mute or not\00"
@str.9 = [17 x i8] c"3 adjust pcm out\00"
define void @print_help() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str.6, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str.7, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str.5, i64 0, i64 0))
ret void
}