#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ EXIT_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ stderr;
int main(int argc, char *argv[]) {
  FILE *in, *out;
  int ch;
  char name[40];
  int count = 0;
  if (argc < 2) {
    fprintf(stderr, "Usage: %s filename\n", argv[0]);
    exit(EXIT_FAILURE);
  }
  if ((in = fopen(argv[1], "r")) == NULL) {
    fprintf(stderr, "");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x60,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x0,-0x54(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    1183 <main+0x53>
mov    0x2e82(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe92(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
lea    0xe82(%rip),%rsi
call   1040 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmp    $0x0,%rax
jne    11bc <main+0x8c>
mov    0x2e34(%rip),%rax
mov    (%rax),%edi
lea    0xe5e(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    -0x4(%rbp),%eax
add    $0x60,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x1,%edi
jle    1166 <main+0x36>
mov    0x8(%rsi),%rdi
lea    0xed3(%rip),%rsi
call   1040 <fopen@plt>
test   %rax,%rax
jne    1162 <main+0x32>
mov    0x2e8e(%rip),%rax
mov    (%rax),%edi
lea    0xeb8(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
xor    %eax,%eax
pop    %rcx
ret
mov    0x2e73(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xe87(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x2e51(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [20 x i8] c"Usage: %s filename\0A\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [1 x i8] zeroinitializer
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32*
%7 = alloca i32*
%8 = alloca i32
%9 = alloca [40 x i8]
%10 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 0, i32* %10
%11 = load i32, i32* %4
%12 = icmp slt i32 %11, 2
br i1 %12, label %13, label %21
13: ; preds = %2
%14 = load i32, i32* @stderr
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 0
%17 = load i8*, i8** %16
%18 = call i32 (i32, i8*, ...) @fprintf(i32 %14, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %17)
%19 = load i32, i32* @EXIT_FAILURE
%20 = call i32 @exit(i32 %19)
unreachable
21: ; preds = %2
%22 = load i8**, i8*** %5
%23 = getelementptr inbounds i8*, i8** %22, i64 1
%24 = load i8*, i8** %23
%25 = call i32* @fopen(i8* %24, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %25, i32** %6
%26 = icmp eq i32* %25, null
br i1 %26, label %27, label %30
27: ; preds = %21
%28 = load i32, i32* @stderr
%29 = call i32 (i32, i8*, ...) @fprintf(i32 %28, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.2, i64 0, i64 0))
br label %30
30: ; preds = %27, %21
%31 = load i32, i32* %3
ret i32 %31
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [20 x i8] c"Usage: %s filename\0A\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [1 x i8] zeroinitializer
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %10
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 (i32, i8*, ...) @fprintf(i32 %5, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = load i32, i32* @EXIT_FAILURE
%9 = tail call i32 @exit(i32 %8)
unreachable
10: ; preds = %2
%11 = getelementptr inbounds i8*, i8** %1, i64 1
%12 = load i8*, i8** %11
%13 = tail call i32* @fopen(i8* %12, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%14 = icmp eq i32* %13, null
br i1 %14, label %15, label %18
15: ; preds = %10
%16 = load i32, i32* @stderr
%17 = tail call i32 (i32, i8*, ...) @fprintf(i32 %16, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.2, i64 0, i64 0))
br label %18
18: ; preds = %15, %10
ret i32 0
}