#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*/ fib(int);
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ printf(char *, ...);
int main() {
  int i, n = 10;
  printf("Print a Fibonacci series.\n");
  for (i = 0; i < n; i++)
    printf("%6ld", fib(i));
  printf("\nPress any key to end...");
  getchar();
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0xa,-0xc(%rbp)
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    118d <main+0x5d>
mov    -0x8(%rbp),%edi
call   1050 <fib@plt>
mov    %eax,%esi
lea    0xea3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    115b <main+0x2b>
lea    0xe8c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1040 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xed6(%rip),%rdi
call   1030 <puts@plt>
xor    %edi,%edi
call   1060 <fib@plt>
lea    0xea5(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x1,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x2,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x3,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x4,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x5,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x6,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x7,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x8,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x9,%edi
call   1060 <fib@plt>
mov    %rbx,%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xdd1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Print a Fibonacci series.\0A\00"
@.str.1 = [5 x i8] c"%6ld\00"
@.str.2 = [25 x i8] c"\0APress any key to end...\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 10, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %2
br label %5
5: ; preds = %13, %0
%6 = load i32, i32* %2
%7 = load i32, i32* %3
%8 = icmp slt i32 %6, %7
br i1 %8, label %9, label %16
9: ; preds = %5
%10 = load i32, i32* %2
%11 = call i32 @fib(i32 %10)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %11)
br label %13
13: ; preds = %9
%14 = load i32, i32* %2
%15 = add nsw i32 %14, 1
store i32 %15, i32* %2
br label %5
16: ; preds = %5
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0))
%18 = call i32 (...) @getchar()
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [5 x i8] c"%6ld\00"
@.str.2 = [25 x i8] c"\0APress any key to end...\00"
@str = [26 x i8] c"Print a Fibonacci series.\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @fib(i32 0)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %2)
%4 = tail call i32 @fib(i32 1)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %4)
%6 = tail call i32 @fib(i32 2)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %6)
%8 = tail call i32 @fib(i32 3)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %8)
%10 = tail call i32 @fib(i32 4)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %10)
%12 = tail call i32 @fib(i32 5)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %12)
%14 = tail call i32 @fib(i32 6)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %14)
%16 = tail call i32 @fib(i32 7)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %16)
%18 = tail call i32 @fib(i32 8)
%19 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %18)
%20 = tail call i32 @fib(i32 9)
%21 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i32 %20)
%22 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0))
%23 = tail call i32 (...) @getchar()
ret i32 0
}