#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*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
scalar_t__ mkfifo(char *, int);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stdout;
int main(int argc, char *argv[]) {
  if (argc < 2) {
    fprintf(stdout, "usage: %s <filename>\n:", argv[0]);
    exit(-1);
  }
  if (mkfifo(argv[1], 0644) < 0) {
    perror("mkfifo() fail");
    exit(-1);
  }
  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)
jge    1186 <main+0x46>
mov    0x2e79(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe89(%rip),%rsi
call   1030 <fprintf@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    $0x1a4,%esi
call   1040 <mkfifo@plt>
cmp    $0x0,%rax
jge    11b8 <main+0x78>
lea    0xe6e(%rip),%rdi
call   1050 <perror@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
cmp    $0x1,%edi
jle    115d <main+0x1d>
mov    0x8(%rsi),%rdi
mov    $0x1a4,%esi
call   1040 <mkfifo@plt>
test   %rax,%rax
js     117f <main+0x3f>
xor    %eax,%eax
pop    %rcx
ret
mov    0x2e7c(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xe90(%rip),%rsi
call   1030 <fprintf@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>
lea    0xe91(%rip),%rdi
call   1050 <perror@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@stdout = global i32 0
@.str = [23 x i8] c"usage: %s <filename>\0A:\00"
@.str.1 = [14 x i8] c"mkfifo() fail\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 slt i32 %6, 2
br i1 %7, label %8, label %15
8: ; preds = %2
%9 = load i32, i32* @stdout
%10 = load i8**, i8*** %5
%11 = getelementptr inbounds i8*, i8** %10, i64 0
%12 = load i8*, i8** %11
%13 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0), i8* %12)
%14 = call i32 @exit(i32 -1)
unreachable
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = call i64 @mkfifo(i8* %18, i32 420)
%20 = icmp slt i64 %19, 0
br i1 %20, label %21, label %24
21: ; preds = %15
%22 = call i32 @perror(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%23 = call i32 @exit(i32 -1)
unreachable
24: ; preds = %15
ret i32 0
}

LLVM IR (-O2):
@stdout = global i32 0
@.str = [23 x i8] c"usage: %s <filename>\0A:\00"
@.str.1 = [14 x i8] c"mkfifo() fail\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 2
br i1 %3, label %4, label %9
4: ; preds = %2
%5 = load i32, i32* @stdout
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([23 x i8], [23 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 = tail call i64 @mkfifo(i8* %11, i32 420)
%13 = icmp slt i64 %12, 0
br i1 %13, label %14, label %17
14: ; preds = %9
%15 = tail call i32 @perror(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%16 = tail call i32 @exit(i32 -1)
unreachable
17: ; preds = %9
ret i32 0
}