#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 dec_to_binary(int);
int /*<<< orphan*/ printf(char *, int, int);
int to_binary_recursive(int);
int main() {
  int i;
  for (i = 0; i < 16; i++)
    printf("%2d :: \t%6d\n", i, dec_to_binary(i));
  for (; i < 32; i++)
    printf("%2d :: \t%6d\n", i, to_binary_recursive(i));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0x10,-0x8(%rbp)
jge    117d <main+0x4d>
mov    -0x8(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%edi
call   1030 <dec_to_binary@plt>
mov    -0xc(%rbp),%esi
mov    %eax,%edx
lea    0xe96(%rip),%rdi
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1146 <main+0x16>
jmp    1182 <main+0x52>
cmpl   $0x20,-0x8(%rbp)
jge    11b9 <main+0x89>
mov    -0x8(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%edi
call   1050 <to_binary_recursive@plt>
mov    -0x10(%rbp),%esi
mov    %eax,%edx
lea    0xe5a(%rip),%rdi
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1182 <main+0x52>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
xor    %edi,%edi
call   1030 <dec_to_binary@plt>
lea    0xec1(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x2,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x3,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x4,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x5,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x6,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x7,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x7,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x8,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x9,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0x9,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xb,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xb,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xc,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xc,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xd,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xd,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xe,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xe,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0xf,%edi
call   1030 <dec_to_binary@plt>
mov    %rbx,%rdi
mov    $0xf,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x10,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x10,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x11,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x11,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x12,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x12,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x13,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x13,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x14,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x14,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x15,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x15,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x16,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x16,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x17,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x17,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x18,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x18,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x19,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x19,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1a,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1a,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1b,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1b,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1c,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1c,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1d,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1d,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1e,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1e,%esi
mov    %eax,%edx
call   1040 <printf@plt>
mov    $0x1f,%edi
call   1050 <to_binary_recursive@plt>
mov    %rbx,%rdi
mov    $0x1f,%esi
mov    %eax,%edx
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [13 x i8] c"%2d :: \09%6d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
br label %3
3: ; preds = %11, %0
%4 = load i32, i32* %2
%5 = icmp slt i32 %4, 16
br i1 %5, label %6, label %14
6: ; preds = %3
%7 = load i32, i32* %2
%8 = load i32, i32* %2
%9 = call i32 @dec_to_binary(i32 %8)
%10 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %7, i32 %9)
br label %11
11: ; preds = %6
%12 = load i32, i32* %2
%13 = add nsw i32 %12, 1
store i32 %13, i32* %2
br label %3
14: ; preds = %3
br label %15
15: ; preds = %23, %14
%16 = load i32, i32* %2
%17 = icmp slt i32 %16, 32
br i1 %17, label %18, label %26
18: ; preds = %15
%19 = load i32, i32* %2
%20 = load i32, i32* %2
%21 = call i32 @to_binary_recursive(i32 %20)
%22 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %19, i32 %21)
br label %23
23: ; preds = %18
%24 = load i32, i32* %2
%25 = add nsw i32 %24, 1
store i32 %25, i32* %2
br label %15
26: ; preds = %15
ret i32 0
}

LLVM IR (-O2):
@.str = [13 x i8] c"%2d :: \09%6d\0A\00"
define i32 @main() {
%1 = tail call i32 @dec_to_binary(i32 0)
%2 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 0, i32 %1)
%3 = tail call i32 @dec_to_binary(i32 1)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 1, i32 %3)
%5 = tail call i32 @dec_to_binary(i32 2)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 2, i32 %5)
%7 = tail call i32 @dec_to_binary(i32 3)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 3, i32 %7)
%9 = tail call i32 @dec_to_binary(i32 4)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 4, i32 %9)
%11 = tail call i32 @dec_to_binary(i32 5)
%12 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 5, i32 %11)
%13 = tail call i32 @dec_to_binary(i32 6)
%14 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 6, i32 %13)
%15 = tail call i32 @dec_to_binary(i32 7)
%16 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 7, i32 %15)
%17 = tail call i32 @dec_to_binary(i32 8)
%18 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 8, i32 %17)
%19 = tail call i32 @dec_to_binary(i32 9)
%20 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 9, i32 %19)
%21 = tail call i32 @dec_to_binary(i32 10)
%22 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 10, i32 %21)
%23 = tail call i32 @dec_to_binary(i32 11)
%24 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 11, i32 %23)
%25 = tail call i32 @dec_to_binary(i32 12)
%26 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 12, i32 %25)
%27 = tail call i32 @dec_to_binary(i32 13)
%28 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 13, i32 %27)
%29 = tail call i32 @dec_to_binary(i32 14)
%30 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 14, i32 %29)
%31 = tail call i32 @dec_to_binary(i32 15)
%32 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 15, i32 %31)
%33 = tail call i32 @to_binary_recursive(i32 16)
%34 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 16, i32 %33)
%35 = tail call i32 @to_binary_recursive(i32 17)
%36 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 17, i32 %35)
%37 = tail call i32 @to_binary_recursive(i32 18)
%38 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 18, i32 %37)
%39 = tail call i32 @to_binary_recursive(i32 19)
%40 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 19, i32 %39)
%41 = tail call i32 @to_binary_recursive(i32 20)
%42 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 20, i32 %41)
%43 = tail call i32 @to_binary_recursive(i32 21)
%44 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 21, i32 %43)
%45 = tail call i32 @to_binary_recursive(i32 22)
%46 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 22, i32 %45)
%47 = tail call i32 @to_binary_recursive(i32 23)
%48 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 23, i32 %47)
%49 = tail call i32 @to_binary_recursive(i32 24)
%50 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 24, i32 %49)
%51 = tail call i32 @to_binary_recursive(i32 25)
%52 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 25, i32 %51)
%53 = tail call i32 @to_binary_recursive(i32 26)
%54 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 26, i32 %53)
%55 = tail call i32 @to_binary_recursive(i32 27)
%56 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 27, i32 %55)
%57 = tail call i32 @to_binary_recursive(i32 28)
%58 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 28, i32 %57)
%59 = tail call i32 @to_binary_recursive(i32 29)
%60 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 29, i32 %59)
%61 = tail call i32 @to_binary_recursive(i32 30)
%62 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 30, i32 %61)
%63 = tail call i32 @to_binary_recursive(i32 31)
%64 = tail call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 31, i32 %63)
ret i32 0
}