#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*/ analyze_changes();
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ init();
scalar_t__ load_hex_file(char *);
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ run();
int /*<<< orphan*/ save_state();
int main(int argc, char **argv) {
  if (argc != 2) {
    printf("Usage: %s hex_file_name\n", argv[0]);
    return 1;
  }
  init();
  if (load_hex_file(argv[1]))
    return 2;
  while (1) {
    save_state();
    run();
    getchar();
    analyze_changes();
  }
  return 0;
}


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     11af <main+0x3f>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe62(%rip),%rdi
call   1040 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11ff <main+0x8f>
mov    $0x0,%al
call   1070 <init@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1080 <load_hex_file@plt>
cmp    $0x0,%rax
je     11d9 <main+0x69>
movl   $0x2,-0x4(%rbp)
jmp    11ff <main+0x8f>
jmp    11de <main+0x6e>
mov    $0x0,%al
call   1050 <save_state@plt>
mov    $0x0,%al
call   1030 <run@plt>
mov    $0x0,%al
call   1060 <getchar@plt>
mov    $0x0,%al
call   1090 <analyze_changes@plt>
jmp    11de <main+0x6e>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x2,%edi
jne    11be <main+0x4e>
xor    %eax,%eax
call   1070 <init@plt>
mov    0x8(%rbx),%rdi
call   1080 <load_hex_file@plt>
mov    %rax,%rcx
mov    $0x2,%eax
test   %rcx,%rcx
je     11a0 <main+0x30>
pop    %rbx
ret
nopl   0x0(%rax,%rax,1)
xor    %eax,%eax
call   1050 <save_state@plt>
xor    %eax,%eax
call   1030 <run@plt>
xor    %eax,%eax
call   1060 <getchar@plt>
xor    %eax,%eax
call   1090 <analyze_changes@plt>
jmp    11a0 <main+0x30>
mov    (%rbx),%rsi
lea    0xe38(%rip),%rdi
call   1040 <printf@plt>
mov    $0x1,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Usage: %s hex_file_name\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 i8**, i8*** %5
%10 = getelementptr inbounds i8*, i8** %9, i64 0
%11 = load i8*, i8** %10
%12 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 1, i32* %3
br label %27
13: ; preds = %2
%14 = call i32 (...) @init()
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i64 @load_hex_file(i8* %17)
%19 = icmp ne i64 %18, 0
br i1 %19, label %20, label %21
20: ; preds = %13
store i32 2, i32* %3
br label %27
21: ; preds = %13
br label %22
22: ; preds = %21, %22
%23 = call i32 (...) @save_state()
%24 = call i32 (...) @run()
%25 = call i32 (...) @getchar()
%26 = call i32 (...) @analyze_changes()
br label %22
27: ; preds = %20, %8
%28 = load i32, i32* %3
ret i32 %28
}

LLVM IR (-O2):
@.str = [25 x i8] c"Usage: %s hex_file_name\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = load i8*, i8** %1
%6 = tail call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0), i8* %5)
br label %18
7: ; preds = %2
%8 = tail call i32 (...) @init()
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i64 @load_hex_file(i8* %10)
%12 = icmp eq i64 %11, 0
br i1 %12, label %13, label %18
13: ; preds = %7, %13
%14 = tail call i32 (...) @save_state()
%15 = tail call i32 (...) @run()
%16 = tail call i32 (...) @getchar()
%17 = tail call i32 (...) @analyze_changes()
br label %13
18: ; preds = %7, %4
%19 = phi i32 [ 1, %4 ], [ 2, %7 ]
ret i32 %19
}