#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 */
struct node {
  int dummy;
};

/* Variables and functions */
struct node *BuildTree(int *, int *, int /*<<< orphan*/, int);
int /*<<< orphan*/ preOrder(struct node *);
int main(void) {
  int in[] = {4, 8, 2, 5, 1, 6, 3, 7};
  int post[] = {8, 4, 5, 2, 6, 7, 3, 1};
  struct node *root = BuildTree(in, post, 0, 7);
  preOrder(root);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x60,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeca(%rip),%rax
mov    %rax,-0x30(%rbp)
mov    0xec7(%rip),%rax
mov    %rax,-0x28(%rbp)
mov    0xec4(%rip),%rax
mov    %rax,-0x20(%rbp)
mov    0xec1(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    0xebe(%rip),%rax
mov    %rax,-0x50(%rbp)
mov    0xebb(%rip),%rax
mov    %rax,-0x48(%rbp)
mov    0xeb8(%rip),%rax
mov    %rax,-0x40(%rbp)
mov    0xeb5(%rip),%rax
mov    %rax,-0x38(%rbp)
lea    -0x30(%rbp),%rdi
lea    -0x50(%rbp),%rsi
xor    %edx,%edx
mov    $0x7,%ecx
call   1040 <BuildTree@plt>
mov    %rax,-0x58(%rbp)
mov    -0x58(%rbp),%rdi
call   1030 <preOrder@plt>
xor    %eax,%eax
add    $0x60,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x48,%rsp
movaps 0xee5(%rip),%xmm0
movaps %xmm0,0x30(%rsp)
movaps 0xec9(%rip),%xmm0
movaps %xmm0,0x20(%rsp)
movaps 0xeed(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movaps 0xed1(%rip),%xmm0
movaps %xmm0,(%rsp)
lea    0x20(%rsp),%rdi
mov    %rsp,%rsi
xor    %edx,%edx
mov    $0x7,%ecx
call   1040 <BuildTree@plt>
mov    %rax,%rdi
call   1030 <preOrder@plt>
xor    %eax,%eax
add    $0x48,%rsp
ret

LLVM IR (-O0):
%struct.node = type { i32 }
@__const.main.in = [8 x i32] [i32 4, i32 8, i32 2, i32 5, i32 1, i32 6, i32 3, i32 7]
@__const.main.post = [8 x i32] [i32 8, i32 4, i32 5, i32 2, i32 6, i32 7, i32 3, i32 1]
define i32 @main() {
%1 = alloca i32
%2 = alloca [8 x i32]
%3 = alloca [8 x i32]
%4 = alloca %struct.node*
store i32 0, i32* %1
%5 = bitcast [8 x i32]* %2 to i8*
%6 = bitcast [8 x i32]* %3 to i8*
%7 = getelementptr inbounds [8 x i32], [8 x i32]* %2, i64 0, i64 0
%8 = getelementptr inbounds [8 x i32], [8 x i32]* %3, i64 0, i64 0
%9 = call %struct.node* @BuildTree(i32* %7, i32* %8, i32 0, i32 7)
store %struct.node* %9, %struct.node** %4
%10 = load %struct.node*, %struct.node** %4
%11 = call i32 @preOrder(%struct.node* %10)
ret i32 0
}

LLVM IR (-O2):
%struct.node = type { i32 }
@__const.main.in = [8 x i32] [i32 4, i32 8, i32 2, i32 5, i32 1, i32 6, i32 3, i32 7]
@__const.main.post = [8 x i32] [i32 8, i32 4, i32 5, i32 2, i32 6, i32 7, i32 3, i32 1]
define i32 @main() {
%1 = alloca [8 x i32]
%2 = alloca [8 x i32]
%3 = bitcast [8 x i32]* %1 to i8*
%4 = bitcast [8 x i32]* %2 to i8*
%5 = getelementptr inbounds [8 x i32], [8 x i32]* %1, i64 0, i64 0
%6 = getelementptr inbounds [8 x i32], [8 x i32]* %2, i64 0, i64 0
%7 = call %struct.node* @BuildTree(i32* %5, i32* %6, i32 0, i32 7)
%8 = call i32 @preOrder(%struct.node* %7)
ret i32 0
}