#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 factorial(int);
int /*<<< orphan*/ printf(char *, int);
int main(void) {
  int r;
  r = factorial(1);
  printf("%d\n", r);
  r = factorial(5);
  printf("%d\n", r);
  r = factorial(10);
  printf("%d\n", r);
  r = factorial(-1024);
  printf("%d\n", r);
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x1,%edi
call   1030 <factorial@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xeba(%rip),%rdi
call   1040 <printf@plt>
mov    $0x5,%edi
call   1030 <factorial@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe9e(%rip),%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <factorial@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe82(%rip),%rdi
call   1040 <printf@plt>
mov    $0xfffffc00,%edi
call   1030 <factorial@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe66(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    $0x1,%edi
call   1030 <factorial@plt>
lea    0xece(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
mov    $0x5,%edi
call   1030 <factorial@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <factorial@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
mov    $0xfffffc00,%edi
call   1030 <factorial@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @factorial(i32 1)
store i32 %3, i32* %2
%4 = load i32, i32* %2
%5 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = call i32 @factorial(i32 5)
store i32 %6, i32* %2
%7 = load i32, i32* %2
%8 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = call i32 @factorial(i32 10)
store i32 %9, i32* %2
%10 = load i32, i32* %2
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %10)
%12 = call i32 @factorial(i32 -1024)
store i32 %12, i32* %2
%13 = load i32, i32* %2
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = tail call i32 @factorial(i32 1)
%2 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 @factorial(i32 5)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %3)
%5 = tail call i32 @factorial(i32 10)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = tail call i32 @factorial(i32 -1024)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %7)
ret i32 0
}