#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*/ O_RDONLY;
int analyze_dl(int);
int open(char *, int /*<<< orphan*/);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ usage(char *);
int main(int argc, char *argv[]) {
  int fd = -1;
  int ret = -1;
  if (argc != 2) {
    usage(argv[0]);
    return -1;
  }
  fd = open(argv[1], O_RDONLY);
  if (fd < 0) {
    perror("Open");
    return -1;
  }
  ret = analyze_dl(fd);
  return ret;
}


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)
movl   $0xffffffff,-0x14(%rbp)
movl   $0xffffffff,-0x18(%rbp)
cmpl   $0x2,-0x8(%rbp)
je     1186 <main+0x46>
mov    -0x10(%rbp),%rax
mov    (%rax),%rdi
call   1040 <usage@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    11d2 <main+0x92>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    0x2e53(%rip),%rax
mov    (%rax),%esi
call   1050 <open@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0x0,-0x14(%rbp)
jge    11c1 <main+0x81>
lea    0xe50(%rip),%rdi
call   1060 <perror@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    11d2 <main+0x92>
mov    -0x14(%rbp),%edi
call   1030 <analyze_dl@plt>
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x2,%edi
jne    1164 <main+0x24>
mov    0x8(%rsi),%rdi
mov    0x2e97(%rip),%rax
mov    (%rax),%esi
call   1050 <open@plt>
test   %eax,%eax
js     1173 <main+0x33>
mov    %eax,%edi
pop    %rax
jmp    1030 <analyze_dl@plt>
mov    (%rsi),%rdi
call   1040 <usage@plt>
mov    $0xffffffff,%eax
pop    %rcx
ret
lea    0xe86(%rip),%rdi
call   1060 <perror@plt>
jmp    116c <main+0x2c>

LLVM IR (-O0):
@O_RDONLY = global i32 0
@.str = [5 x i8] c"Open\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 -1, i32* %6
store i32 -1, i32* %7
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 2
br i1 %9, label %10, label %15
10: ; preds = %2
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @usage(i8* %13)
store i32 -1, i32* %3
br label %29
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = load i32, i32* @O_RDONLY
%20 = call i32 @open(i8* %18, i32 %19)
store i32 %20, i32* %6
%21 = load i32, i32* %6
%22 = icmp slt i32 %21, 0
br i1 %22, label %23, label %25
23: ; preds = %15
%24 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %3
br label %29
25: ; preds = %15
%26 = load i32, i32* %6
%27 = call i32 @analyze_dl(i32 %26)
store i32 %27, i32* %7
%28 = load i32, i32* %7
store i32 %28, i32* %3
br label %29
29: ; preds = %25, %23, %10
%30 = load i32, i32* %3
ret i32 %30
}

LLVM IR (-O2):
@O_RDONLY = global i32 0
@.str = [5 x i8] c"Open\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 @usage(i8* %5)
br label %17
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = load i32, i32* @O_RDONLY
%11 = tail call i32 @open(i8* %9, i32 %10)
%12 = icmp slt i32 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %7
%14 = tail call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
br label %17
15: ; preds = %7
%16 = tail call i32 @analyze_dl(i32 %11)
br label %17
17: ; preds = %15, %13, %4
%18 = phi i32 [ -1, %4 ], [ -1, %13 ], [ %16, %15 ]
ret i32 %18
}