#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 usage(void) {
  printf("Usage: clock [-w|-c channel -g greyscale ]\n");
  printf("                 -h    show this help message\n");
  printf("                 -b    show the current brightness detected by "
         "sensor\n");
  printf("                 -t    show the time\n");
  printf("                 -d <d> -v <v> -g <g>    set digit d to show value v "
         "at greyscale g\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf05(%rip),%rdi
call   1030 <printf@plt>
lea    0xf28(%rip),%rdi
call   1030 <printf@plt>
lea    0xf63(%rip),%rdi
call   1030 <printf@plt>
lea    0xf7d(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
lea    0xee8(%rip),%rdi
call   1030 <puts@plt>
lea    0xf07(%rip),%rdi
call   1030 <puts@plt>
lea    0xf29(%rip),%rdi
call   1030 <puts@plt>
lea    0xf63(%rip),%rdi
call   1030 <puts@plt>
lea    0xf7c(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [44 x i8] c"Usage: clock [-w|-c channel -g greyscale ]\0A\00"
@.str.1 = [47 x i8] c" -h show this help message\0A\00"
@.str.2 = [71 x i8] c" -b show the current brightness detected by sensor\0A\00"
@.str.3 = [38 x i8] c" -t show the time\0A\00"
@.str.4 = [85 x i8] c" -d <d> -v <v> -g <g> set digit d to show value v at greyscale g\0A\00"
define void @usage() {
%1 = call i32 @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([85 x i8], [85 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [43 x i8] c"Usage: clock [-w|-c channel -g greyscale ]\00"
@str.5 = [46 x i8] c" -h show this help message\00"
@str.6 = [70 x i8] c" -b show the current brightness detected by sensor\00"
@str.7 = [37 x i8] c" -t show the time\00"
@str.8 = [84 x i8] c" -d <d> -v <v> -g <g> set digit d to show value v at greyscale g\00"
define void @usage() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.5, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([70 x i8], [70 x i8]* @str.6, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @str.7, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([84 x i8], [84 x i8]* @str.8, i64 0, i64 0))
ret void
}