#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(char *prog) {
  printf("Usage: %s [options]\n", prog);
  printf("  -h\t\tPrint this message\n");
  printf("  -v\t\tPrint verbose debug statements\n");
  printf("  -d <dev>\tSpecify USART device (default: /dev/ttyUSB0)\n");
  printf("  -b <baud>\tSpecify baud rate (default: 115200)\n");
  printf("  -t <bytes>\tSpecify the number of upload transfer bytes\n");
  printf("  -U <file>\tRead firmware from device into file\n");
  printf("  -D <file>\tWrite firmware from file into device\n");
}


x86 assembly (clang, -O0):
<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    0xee0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeec(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf04(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf2f(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf52(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf7e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xfa1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
mov    %rdi,%rsi
lea    0xed5(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <puts@plt>
lea    0xee9(%rip),%rdi
call   1030 <puts@plt>
lea    0xf02(%rip),%rdi
call   1030 <puts@plt>
lea    0xf2e(%rip),%rdi
call   1030 <puts@plt>
lea    0xf52(%rip),%rdi
call   1030 <puts@plt>
lea    0xf7f(%rip),%rdi
call   1030 <puts@plt>
lea    0xfa3(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [21 x i8] c"Usage: %s [options]\0A\00"
@.str.1 = [26 x i8] c" -h\09\09Print this message\0A\00"
@.str.2 = [38 x i8] c" -v\09\09Print verbose debug statements\0A\00"
@.str.3 = [57 x i8] c" -d <dev>\09Specify USART device (default: /dev/ttyUSB0)\0A\00"
@.str.4 = [49 x i8] c" -b <baud>\09Specify baud rate (default: 115200)\0A\00"
@.str.5 = [58 x i8] c" -t <bytes>\09Specify the number of upload transfer bytes\0A\00"
@.str.6 = [49 x i8] c" -U <file>\09Read firmware from device into file\0A\00"
@.str.7 = [50 x i8] c" -D <file>\09Write firmware from file into device\0A\00"
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str.3, i64 0, i64 0))
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([49 x i8], [49 x i8]* @.str.4, i64 0, i64 0))
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.5, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([49 x i8], [49 x i8]* @.str.6, i64 0, i64 0))
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([50 x i8], [50 x i8]* @.str.7, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [21 x i8] c"Usage: %s [options]\0A\00"
@str = [25 x i8] c" -h\09\09Print this message\00"
@str.8 = [37 x i8] c" -v\09\09Print verbose debug statements\00"
@str.9 = [56 x i8] c" -d <dev>\09Specify USART device (default: /dev/ttyUSB0)\00"
@str.10 = [48 x i8] c" -b <baud>\09Specify baud rate (default: 115200)\00"
@str.11 = [57 x i8] c" -t <bytes>\09Specify the number of upload transfer bytes\00"
@str.12 = [48 x i8] c" -U <file>\09Read firmware from device into file\00"
@str.13 = [49 x i8] c" -D <file>\09Write firmware from file into device\00"
define void @usage(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([56 x i8], [56 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @str.10, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([57 x i8], [57 x i8]* @str.11, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([48 x i8], [48 x i8]* @str.12, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([49 x i8], [49 x i8]* @str.13, i64 0, i64 0))
ret void
}