#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 uart_usage(char *appname) {
  printf("%s -d <tty-device> -b <baud-rate> [-w -t] <data>\n", appname);
  printf("   -d <tty-device>  UART device\n");
  printf("   -b <baud-rate>   UART baud rate [default: 9600]\n");
  printf("   -w               Wait for response\n");
  printf("   -t               Wait for terminator (intrinsic -w)\n");
  printf("example:\n");
  printf("%s -d/dev/ttyS0 -b9600 \"Hello world\\n\"\n", appname);
}


x86 assembly (clang, -O0):
<uart_usage>:
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    0xefd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf10(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf36(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf4f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf79(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rsi
lea    0xf71(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<uart_usage>:
push   %rbx
mov    %rdi,%rbx
lea    0xed5(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xf1e(%rip),%rdi
call   1030 <puts@plt>
lea    0xf32(%rip),%rdi
call   1030 <puts@plt>
lea    0xf59(%rip),%rdi
call   1030 <puts@plt>
lea    0xf73(%rip),%rdi
call   1030 <puts@plt>
lea    0xf9e(%rip),%rdi
call   1030 <puts@plt>
lea    0xeba(%rip),%rdi
mov    %rbx,%rsi
xor    %eax,%eax
pop    %rbx
jmp    1040 <printf@plt>

LLVM IR (-O0):
@.str = [50 x i8] c"%s -d <tty-device> -b <baud-rate> [-w -t] <data>\0A\00"
@.str.1 = [33 x i8] c" -d <tty-device> UART device\0A\00"
@.str.2 = [52 x i8] c" -b <baud-rate> UART baud rate [default: 9600]\0A\00"
@.str.3 = [39 x i8] c" -w Wait for response\0A\00"
@.str.4 = [56 x i8] c" -t Wait for terminator (intrinsic -w)\0A\00"
@.str.5 = [10 x i8] c"example:\0A\00"
@.str.6 = [40 x i8] c"%s -d/dev/ttyS0 -b9600 \22Hello world\\n\22\0A\00"
define void @uart_usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([50 x i8], [50 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([56 x i8], [56 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.5, i64 0, i64 0))
%10 = load i8*, i8** %2
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.6, i64 0, i64 0), i8* %10)
ret void
}

LLVM IR (-O2):
@.str = [50 x i8] c"%s -d <tty-device> -b <baud-rate> [-w -t] <data>\0A\00"
@.str.6 = [40 x i8] c"%s -d/dev/ttyS0 -b9600 \22Hello world\\n\22\0A\00"
@str = [32 x i8] c" -d <tty-device> UART device\00"
@str.7 = [51 x i8] c" -b <baud-rate> UART baud rate [default: 9600]\00"
@str.8 = [38 x i8] c" -w Wait for response\00"
@str.9 = [55 x i8] c" -t Wait for terminator (intrinsic -w)\00"
@str.10 = [9 x i8] c"example:\00"
define void @uart_usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([51 x i8], [51 x i8]* @str.7, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @str.8, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([55 x i8], [55 x i8]* @str.9, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @str.10, i64 0, i64 0))
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @.str.6, i64 0, i64 0), i8* %0)
ret void
}