#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 tree_node {
  int dummy;
};

/* Variables and functions */
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
struct tree_node *get_tree_from_file(char *);
int /*<<< orphan*/ print_tree(struct tree_node *);
int /*<<< orphan*/ stderr;
int main(int argc, char *argv[]) {
  struct tree_node *root;
  if (argc != 2) {
    fprintf(stderr, "Usage: %s <input_tree_file>\n\n", argv[0]);
    exit(1);
  }
  root = get_tree_from_file(argv[1]);
  print_tree(root);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     1186 <main+0x46>
mov    0x2e79(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe89(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <get_tree_from_file@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
call   1050 <print_tree@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    115b <main+0x1b>
mov    0x8(%rsi),%rdi
call   1030 <get_tree_from_file@plt>
mov    %rax,%rdi
call   1050 <print_tree@plt>
xor    %eax,%eax
pop    %rcx
ret
mov    0x2e7e(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xe92(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
%struct.tree_node = type { i32 }
@stderr = global i32 0
@.str = [30 x i8] c"Usage: %s <input_tree_file>\0A\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca %struct.tree_node*
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp ne i32 %7, 2
br i1 %8, label %9, label %16
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = call i32 @exit(i32 1)
unreachable
16: ; preds = %2
%17 = load i8**, i8*** %5
%18 = getelementptr inbounds i8*, i8** %17, i64 1
%19 = load i8*, i8** %18
%20 = call %struct.tree_node* @get_tree_from_file(i8* %19)
store %struct.tree_node* %20, %struct.tree_node** %6
%21 = load %struct.tree_node*, %struct.tree_node** %6
%22 = call i32 @print_tree(%struct.tree_node* %21)
ret i32 0
}

LLVM IR (-O2):
%struct.tree_node = type { i32 }
@stderr = global i32 0
@.str = [30 x i8] c"Usage: %s <input_tree_file>\0A\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %9, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = tail call i32 @exit(i32 1)
unreachable
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = tail call %struct.tree_node* @get_tree_from_file(i8* %11)
%13 = tail call i32 @print_tree(%struct.tree_node* %12)
ret i32 0
}