#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*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ stderr;
void usage(void) {
  fprintf(
      stderr,
      "Invalid command line - you must specify a port name or debug option!\n");
  fprintf(stderr, "Valid options:\n");
  fprintf(stderr,
          "\t-p <filename>    -  serial port device path, e.g. /dev/ttyS0\n");
  fprintf(stderr, "\t                    *** Make sure you have write access "
                  "to the port!\n");
  fprintf(stderr,
          "\t-d               - debug mode; do not intialize serial port\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
mov    0x2ec5(%rip),%rax
mov    (%rax),%edi
lea    0xedc(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2eb0(%rip),%rax
mov    (%rax),%edi
lea    0xf0d(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e9b(%rip),%rax
mov    (%rax),%edi
lea    0xf08(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e86(%rip),%rax
mov    (%rax),%edi
lea    0xf32(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e71(%rip),%rax
mov    (%rax),%edi
lea    0xf64(%rip),%rsi
call   1030 <fprintf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    0x2ec8(%rip),%rbx
mov    (%rbx),%edi
lea    0xedf(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf17(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf19(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf4a(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf83(%rip),%rsi
pop    %rbx
jmp    1030 <fprintf@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [70 x i8] c"Invalid command line - you must specify a port name or debug option!\0A\00"
@.str.1 = [16 x i8] c"Valid options:\0A\00"
@.str.2 = [63 x i8] c"\09-p <filename> - serial port device path, e.g. /dev/ttyS0\0A\00"
@.str.3 = [71 x i8] c"\09 *** Make sure you have write access to the port!\0A\00"
@.str.4 = [62 x i8] c"\09-d - debug mode; do not intialize serial port\0A\00"
define void @usage() {
%1 = load i32, i32* @stderr
%2 = call i32 @fprintf(i32 %1, i8* getelementptr inbounds ([70 x i8], [70 x i8]* @.str, i64 0, i64 0))
%3 = load i32, i32* @stderr
%4 = call i32 @fprintf(i32 %3, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
%5 = load i32, i32* @stderr
%6 = call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32, i32* @stderr
%8 = call i32 @fprintf(i32 %7, i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.3, i64 0, i64 0))
%9 = load i32, i32* @stderr
%10 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.4, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [70 x i8] c"Invalid command line - you must specify a port name or debug option!\0A\00"
@.str.1 = [16 x i8] c"Valid options:\0A\00"
@.str.2 = [63 x i8] c"\09-p <filename> - serial port device path, e.g. /dev/ttyS0\0A\00"
@.str.3 = [71 x i8] c"\09 *** Make sure you have write access to the port!\0A\00"
@.str.4 = [62 x i8] c"\09-d - debug mode; do not intialize serial port\0A\00"
define void @usage() {
%1 = load i32, i32* @stderr
%2 = tail call i32 @fprintf(i32 %1, i8* getelementptr inbounds ([70 x i8], [70 x i8]* @.str, i64 0, i64 0))
%3 = load i32, i32* @stderr
%4 = tail call i32 @fprintf(i32 %3, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32, i32* @stderr
%8 = tail call i32 @fprintf(i32 %7, i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.3, i64 0, i64 0))
%9 = load i32, i32* @stderr
%10 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.4, i64 0, i64 0))
ret void
}