#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 *, ...);
int square(int);
int main(void) {
  printf("Hello World!\n");
  printf(" * Square of 123 is %u\n", square(123));
  printf(" * Square of 456 is %u\n", square(456));
  printf(" * Square of 789 is %u\n", square(789));
  printf(" * Square of 1122 is %u\n", square(1122));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x7b,%edi
call   1030 <square@plt>
mov    %eax,%esi
lea    0xebe(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x1c8,%edi
call   1030 <square@plt>
mov    %eax,%esi
lea    0xebc(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x315,%edi
call   1030 <square@plt>
mov    %eax,%esi
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x462,%edi
call   1030 <square@plt>
mov    %eax,%esi
lea    0xeb8(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xf29(%rip),%rdi
call   1030 <puts@plt>
mov    $0x7b,%edi
call   1040 <square@plt>
lea    0xeb2(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0x1c8,%edi
call   1040 <square@plt>
lea    0xeb0(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0x315,%edi
call   1040 <square@plt>
lea    0xeae(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0x462,%edi
call   1040 <square@plt>
lea    0xeac(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [14 x i8] c"Hello World!\0A\00"
@.str.1 = [24 x i8] c" * Square of 123 is %u\0A\00"
@.str.2 = [24 x i8] c" * Square of 456 is %u\0A\00"
@.str.3 = [24 x i8] c" * Square of 789 is %u\0A\00"
@.str.4 = [25 x i8] c" * Square of 1122 is %u\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @square(i32 123)
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%5 = call i32 @square(i32 456)
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = call i32 @square(i32 789)
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = call i32 @square(i32 1122)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0), i32 %9)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [24 x i8] c" * Square of 123 is %u\0A\00"
@.str.2 = [24 x i8] c" * Square of 456 is %u\0A\00"
@.str.3 = [24 x i8] c" * Square of 789 is %u\0A\00"
@.str.4 = [25 x i8] c" * Square of 1122 is %u\0A\00"
@str = [13 x i8] c"Hello World!\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @square(i32 123)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i32 %2)
%4 = tail call i32 @square(i32 456)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.2, i64 0, i64 0), i32 %4)
%6 = tail call i32 @square(i32 789)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %6)
%8 = tail call i32 @square(i32 1122)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0), i32 %8)
ret i32 0
}