#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("Best practice for parsing command line arguments with getopt.\n");
  printf("Usage: $ ./getopt_cli [-a] [-b] [-c <val>] [-d[<val>]] [-h]\n");
  printf("\n");
  printf("Arguments:\n");
  printf("   -a   Sets flag a to true.\n");
  printf("   -b   Sets flag b to true.\n");
  printf("   -c   Sets value c.\n");
  printf("   -d   Sets value d (optional, default: 42).\n");
  printf("   -h   Prints a help message.\n");
}


x86 assembly (clang, -O0):
<print_help>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf18(%rip),%rdi
call   1030 <printf@plt>
lea    0xfd5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf3d(%rip),%rdi
call   1030 <printf@plt>
lea    0xf3d(%rip),%rdi
call   1030 <printf@plt>
lea    0xf4f(%rip),%rdi
call   1030 <printf@plt>
lea    0xf61(%rip),%rdi
call   1030 <printf@plt>
lea    0xf6c(%rip),%rdi
call   1030 <printf@plt>
lea    0xf8f(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<print_help>:
push   %rax
lea    0xed8(%rip),%rdi
call   1040 <puts@plt>
lea    0xf0a(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xf30(%rip),%rdi
call   1040 <puts@plt>
lea    0xf2f(%rip),%rdi
call   1040 <puts@plt>
lea    0xf40(%rip),%rdi
call   1040 <puts@plt>
lea    0xf51(%rip),%rdi
call   1040 <puts@plt>
lea    0xf5b(%rip),%rdi
call   1040 <puts@plt>
lea    0xf7d(%rip),%rdi
pop    %rax
jmp    1040 <puts@plt>

LLVM IR (-O0):
@.str = [63 x i8] c"Best practice for parsing command line arguments with getopt.\0A\00"
@.str.1 = [61 x i8] c"Usage: $ ./getopt_cli [-a] [-b] [-c <val>] [-d[<val>]] [-h]\0A\00"
@.str.2 = [2 x i8] c"\0A\00"
@.str.3 = [12 x i8] c"Arguments:\0A\00"
@.str.4 = [30 x i8] c" -a Sets flag a to true.\0A\00"
@.str.5 = [30 x i8] c" -b Sets flag b to true.\0A\00"
@.str.6 = [23 x i8] c" -c Sets value c.\0A\00"
@.str.7 = [47 x i8] c" -d Sets value d (optional, default: 42).\0A\00"
@.str.8 = [32 x i8] c" -h Prints a help message.\0A\00"
define void @print_help() {
%1 = call i32 @printf(i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([61 x i8], [61 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.6, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.7, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.8, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [62 x i8] c"Best practice for parsing command line arguments with getopt.\00"
@str.9 = [60 x i8] c"Usage: $ ./getopt_cli [-a] [-b] [-c <val>] [-d[<val>]] [-h]\00"
@str.10 = [11 x i8] c"Arguments:\00"
@str.11 = [29 x i8] c" -a Sets flag a to true.\00"
@str.12 = [29 x i8] c" -b Sets flag b to true.\00"
@str.13 = [22 x i8] c" -c Sets value c.\00"
@str.14 = [46 x i8] c" -d Sets value d (optional, default: 42).\00"
@str.15 = [31 x i8] c" -h Prints a help message.\00"
define void @print_help() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([60 x i8], [60 x i8]* @str.9, i64 0, i64 0))
%3 = tail call i32 @putchar(i32 10)
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str.10, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.11, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.12, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.13, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.14, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @str.15, i64 0, i64 0))
ret void
}