#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*/ debug_input();
int /*<<< orphan*/ debug_output();
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ init_input(char *);
int /*<<< orphan*/ init_node();
int /*<<< orphan*/ sim();
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  if (argc != 2) {
    fprintf(stderr, "usage: %s FILE\n", *argv);
    return 1;
  }
  init_input(argv[1]);
  debug_input();
  init_node();
  sim();
  debug_output();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     11a8 <main+0x48>
mov    0x2e59(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe69(%rip),%rsi
call   1050 <fprintf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11d1 <main+0x71>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1070 <init_input@plt>
mov    $0x0,%al
call   1060 <debug_input@plt>
mov    $0x0,%al
call   1040 <init_node@plt>
mov    $0x0,%al
call   1080 <sim@plt>
mov    $0x0,%al
call   1030 <debug_output@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x2,%edi
jne    118f <main+0x2f>
mov    0x8(%rsi),%rdi
call   1070 <init_input@plt>
xor    %ebx,%ebx
xor    %eax,%eax
call   1060 <debug_input@plt>
xor    %eax,%eax
call   1040 <init_node@plt>
xor    %eax,%eax
call   1080 <sim@plt>
xor    %eax,%eax
call   1030 <debug_output@plt>
jmp    11ac <main+0x4c>
mov    0x2e4a(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xe5e(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%ebx
mov    %ebx,%eax
pop    %rbx
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [16 x i8] c"usage: %s FILE\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 2
br i1 %7, label %8, label %13
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = load i8**, i8*** %5
%11 = load i8*, i8** %10
%12 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 1, i32* %3
br label %22
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i32 @init_input(i8* %16)
%18 = call i32 (...) @debug_input()
%19 = call i32 (...) @init_node()
%20 = call i32 (...) @sim()
%21 = call i32 (...) @debug_output()
br label %22
22: ; preds = %13, %8
%23 = load i32, i32* %3
ret i32 %23
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [16 x i8] c"usage: %s FILE\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %8, 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 ([16 x i8], [16 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %16
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i32 @init_input(i8* %10)
%12 = tail call i32 (...) @debug_input()
%13 = tail call i32 (...) @init_node()
%14 = tail call i32 (...) @sim()
%15 = tail call i32 (...) @debug_output()
br label %16
16: ; preds = %8, %4
%17 = phi i32 [ 1, %4 ], [ 0, %8 ]
ret i32 %17
}