#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*/ checksum(char *);
int /*<<< orphan*/ printf(char *, int /*<<< orphan*/);
int main() {
  printf("checksum of 'hello' is %lu\n", checksum("hello"));
  printf("checksum of 'world' is %lu\n", checksum("world"));
  printf("checsum of 'hello world' is %lu\n'", checksum("hello world"));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xee6(%rip),%rdi
call   1040 <checksum@plt>
mov    %eax,%esi
lea    0xebc(%rip),%rdi
call   1030 <printf@plt>
lea    0xf16(%rip),%rdi
call   1040 <checksum@plt>
mov    %eax,%esi
lea    0xec4(%rip),%rdi
call   1030 <printf@plt>
lea    0xef6(%rip),%rdi
call   1040 <checksum@plt>
mov    %eax,%esi
lea    0xec6(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xef4(%rip),%rdi
call   1040 <checksum@plt>
lea    0xecc(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xf24(%rip),%rdi
call   1040 <checksum@plt>
lea    0xed4(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xf04(%rip),%rdi
call   1040 <checksum@plt>
lea    0xed6(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [28 x i8] c"checksum of 'hello' is %lu\0A\00"
@.str.1 = [6 x i8] c"hello\00"
@.str.2 = [28 x i8] c"checksum of 'world' is %lu\0A\00"
@.str.3 = [6 x i8] c"world\00"
@.str.4 = [34 x i8] c"checsum of 'hello world' is %lu\0A'\00"
@.str.5 = [12 x i8] c"hello world\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @checksum(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 %2)
%4 = call i32 @checksum(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i32 %4)
%6 = call i32 @checksum(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.4, i64 0, i64 0), i32 %6)
ret i32 0
}

LLVM IR (-O2):
@.str = [28 x i8] c"checksum of 'hello' is %lu\0A\00"
@.str.1 = [6 x i8] c"hello\00"
@.str.2 = [28 x i8] c"checksum of 'world' is %lu\0A\00"
@.str.3 = [6 x i8] c"world\00"
@.str.4 = [34 x i8] c"checsum of 'hello world' is %lu\0A'\00"
@.str.5 = [12 x i8] c"hello world\00"
define i32 @main() {
%1 = tail call i32 @checksum(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%2 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 @checksum(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%4 = tail call i32 @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i32 %3)
%5 = tail call i32 @checksum(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.5, i64 0, i64 0))
%6 = tail call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.4, i64 0, i64 0), i32 %5)
ret i32 0
}