#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(int);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stderr;
int main(int argc, char **argv) {
  FILE *fp;
  if (argc != 3) {
    fprintf(stderr, "usage:  %s path mode", argv[0]);
    exit(1);
  }
  fp = fopen(argv[1], argv[2]);
  if (!fp) {
    perror(argv[1]);
    exit(1);
  }
  fclose(fp);
  exit(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   $0x3,-0x8(%rbp)
je     1196 <main+0x46>
mov    0x2e69(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe79(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    11d1 <main+0x81>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
xor    %edi,%edi
call   1070 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x3,%edi
jne    117e <main+0x2e>
mov    0x8(%rbx),%rdi
mov    0x10(%rbx),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
jne    11a0 <main+0x50>
mov    0x8(%rbx),%rdi
call   1060 <perror@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    0x2e5b(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe6f(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    %rax,%rdi
call   1030 <fclose@plt>
xor    %edi,%edi
call   1070 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [21 x i8] c"usage: %s path mode\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32*
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, 3
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 ([21 x i8], [21 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 = load i8**, i8*** %5
%21 = getelementptr inbounds i8*, i8** %20, i64 2
%22 = load i8*, i8** %21
%23 = call i32* @fopen(i8* %19, i8* %22)
store i32* %23, i32** %6
%24 = load i32*, i32** %6
%25 = icmp ne i32* %24, null
br i1 %25, label %32, label %26
26: ; preds = %16
%27 = load i8**, i8*** %5
%28 = getelementptr inbounds i8*, i8** %27, i64 1
%29 = load i8*, i8** %28
%30 = call i32 @perror(i8* %29)
%31 = call i32 @exit(i32 1)
unreachable
32: ; preds = %16
%33 = load i32*, i32** %6
%34 = call i32 @fclose(i32* %33)
%35 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [21 x i8] c"usage: %s path mode\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
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 ([21 x i8], [21 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 = getelementptr inbounds i8*, i8** %1, i64 2
%13 = load i8*, i8** %12
%14 = tail call i32* @fopen(i8* %11, i8* %13)
%15 = icmp eq i32* %14, null
br i1 %15, label %16, label %20
16: ; preds = %9
%17 = load i8*, i8** %10
%18 = tail call i32 @perror(i8* %17)
%19 = tail call i32 @exit(i32 1)
unreachable
20: ; preds = %9
%21 = tail call i32 @fclose(i32* %14)
%22 = tail call i32 @exit(i32 0)
unreachable
}