#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 *, char const *);
int /*<<< orphan*/ puts(char *);
void usage(const char *program_name) {
  printf("usage: %s <hostname> [<page>]\n", program_name);
  puts("`hostname` is mandatory, `page` is optional (defaults to '/')");
  puts("`is present,`page must start with `/`. Otherwise the response will "
       "likely be `400 - bad request`");
  printf("example: %s www.example.com /\n", program_name);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rsi
lea    0xec9(%rip),%rdi
call   1040 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <puts@plt>
lea    0xf0e(%rip),%rdi
call   1030 <puts@plt>
mov    -0x8(%rbp),%rsi
lea    0xf5f(%rip),%rdi
call   1040 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    %rdi,%rbx
lea    0xed5(%rip),%rdi
mov    %rbx,%rsi
call   1040 <printf@plt>
lea    0xee5(%rip),%rdi
call   1030 <puts@plt>
lea    0xf17(%rip),%rdi
call   1030 <puts@plt>
lea    0xf6c(%rip),%rdi
mov    %rbx,%rsi
pop    %rbx
jmp    1040 <printf@plt>

LLVM IR (-O0):
@.str = [31 x i8] c"usage: %s <hostname> [<page>]\0A\00"
@.str.1 = [62 x i8] c"`hostname` is mandatory, `page` is optional (defaults to '/')\00"
@.str.2 = [97 x i8] c"`is present,`page must start with `/`. Otherwise the response will likely be `400 - bad request`\00"
@.str.3 = [31 x i8] c"example: %s www.example.com /\0A\00"
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = call i32 @puts(i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 @puts(i8* getelementptr inbounds ([97 x i8], [97 x i8]* @.str.2, i64 0, i64 0))
%7 = load i8*, i8** %2
%8 = call i32 @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0), i8* %7)
ret void
}

LLVM IR (-O2):
@.str = [31 x i8] c"usage: %s <hostname> [<page>]\0A\00"
@.str.1 = [62 x i8] c"`hostname` is mandatory, `page` is optional (defaults to '/')\00"
@.str.2 = [97 x i8] c"`is present,`page must start with `/`. Otherwise the response will likely be `400 - bad request`\00"
@.str.3 = [31 x i8] c"example: %s www.example.com /\0A\00"
define void @usage(i8* %0) {
%2 = tail call i32 @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i64 0, i64 0), i8* %0)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([97 x i8], [97 x i8]* @.str.2, i64 0, i64 0))
%5 = tail call i32 @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0), i8* %0)
ret void
}