#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 *);
main() {
  printf("Content-type: text/html\n");
  printf("\n");
  printf("<html>\n");
  printf("<head>\n");
  printf("<title>Hello, world</title>\n");
  printf("</head>\n");
  printf("\n");
  printf("<body>\n");
  printf("<h1>Hello, world</h1>\n");
  printf("</body>\n");
  printf("</html>\n");
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf45(%rip),%rdi
call   1030 <printf@plt>
lea    0xee6(%rip),%rdi
call   1030 <printf@plt>
lea    0xee2(%rip),%rdi
call   1030 <printf@plt>
lea    0xede(%rip),%rdi
call   1030 <printf@plt>
lea    0xeef(%rip),%rdi
call   1030 <printf@plt>
lea    0xf09(%rip),%rdi
call   1030 <printf@plt>
lea    0xee0(%rip),%rdi
call   1030 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <printf@plt>
lea    0xee7(%rip),%rdi
call   1030 <printf@plt>
lea    0xee4(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xeda(%rip),%rdi
call   1040 <puts@plt>
lea    0xed5(%rip),%rdi
call   1040 <puts@plt>
lea    0xed0(%rip),%rdi
call   1040 <puts@plt>
lea    0xee0(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xed2(%rip),%rdi
call   1040 <puts@plt>
lea    0xecd(%rip),%rdi
call   1040 <puts@plt>
lea    0xed7(%rip),%rdi
call   1040 <puts@plt>
lea    0xed3(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Content-type: text/html\0A\00"
@.str.1 = [2 x i8] c"\0A\00"
@.str.2 = [8 x i8] c"<html>\0A\00"
@.str.3 = [8 x i8] c"<head>\0A\00"
@.str.4 = [29 x i8] c"<title>Hello, world</title>\0A\00"
@.str.5 = [9 x i8] c"</head>\0A\00"
@.str.6 = [8 x i8] c"<body>\0A\00"
@.str.7 = [23 x i8] c"<h1>Hello, world</h1>\0A\00"
@.str.8 = [9 x i8] c"</body>\0A\00"
@.str.9 = [9 x i8] c"</html>\0A\00"
define i32 @main() {
%1 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.7, i64 0, i64 0))
%10 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.8, i64 0, i64 0))
%11 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.9, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@str = [24 x i8] c"Content-type: text/html\00"
@str.10 = [7 x i8] c"<html>\00"
@str.11 = [7 x i8] c"<head>\00"
@str.12 = [28 x i8] c"<title>Hello, world</title>\00"
@str.13 = [8 x i8] c"</head>\00"
@str.14 = [7 x i8] c"<body>\00"
@str.15 = [22 x i8] c"<h1>Hello, world</h1>\00"
@str.16 = [8 x i8] c"</body>\00"
@str.17 = [8 x i8] c"</html>\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @putchar(i32 10)
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str.10, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str.11, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([28 x i8], [28 x i8]* @str.12, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str.13, i64 0, i64 0))
%7 = tail call i32 @putchar(i32 10)
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str.14, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str.15, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str.16, i64 0, i64 0))
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str.17, i64 0, i64 0))
ret i32 0
}