#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 */
struct sockaddr_un {
  int /*<<< orphan*/ sun_path;
  int /*<<< orphan*/ sun_family;
};
struct sockaddr {
  int dummy;
};
typedef int /*<<< orphan*/ addr;

/* Variables and functions */
int /*<<< orphan*/ AF_UNIX;
int /*<<< orphan*/ PF_UNIX;
int /*<<< orphan*/ SOCK_STREAM;
int connect(int, struct sockaddr *, int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ memset(struct sockaddr_un *, int /*<<< orphan*/, int);
int /*<<< orphan*/ perror(char *);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ strcpy(int /*<<< orphan*/, char const *);
int socket_open(const char *name) {
  int fd;
  if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) == -1) {
    perror("socket error");
    exit(-1);
  }
  struct sockaddr_un addr;
  memset(&addr, 0, sizeof(addr));
  addr.sun_family = AF_UNIX;
  strcpy(addr.sun_path, name);
  if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
    perror("connect error");
    exit(-1);
  }
  return fd;
}


x86 assembly (clang, -O0):
<socket_open>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    0x2e85(%rip),%rax
mov    (%rax),%edi
mov    0x2e54(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1080 <socket@plt>
mov    %eax,-0xc(%rbp)
cmp    $0xffffffff,%eax
jne    11a7 <socket_open+0x47>
lea    0xe68(%rip),%rdi
call   1050 <perror@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>
lea    -0x18(%rbp),%rdi
xor    %esi,%esi
mov    $0x8,%edx
call   1040 <memset@plt>
mov    0x2e22(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
mov    -0x18(%rbp),%edi
mov    -0x8(%rbp),%rsi
call   1030 <strcpy@plt>
mov    -0xc(%rbp),%edi
lea    -0x18(%rbp),%rsi
mov    $0x8,%edx
call   1070 <connect@plt>
cmp    $0xffffffff,%eax
jne    11ff <socket_open+0x9f>
lea    0xe1d(%rip),%rdi
call   1050 <perror@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>
mov    -0xc(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<socket_open>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
mov    %rdi,%r14
mov    0x2e85(%rip),%rax
mov    (%rax),%edi
mov    0x2e54(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1080 <socket@plt>
cmp    $0xffffffff,%eax
je     11d9 <socket_open+0x79>
mov    %eax,%ebx
lea    0x8(%rsp),%r15
mov    %r15,%rdi
xor    %esi,%esi
mov    $0x8,%edx
call   1040 <memset@plt>
mov    0x2e39(%rip),%rax
mov    (%rax),%eax
mov    %eax,0xc(%rsp)
mov    0x8(%rsp),%edi
mov    %r14,%rsi
call   1030 <strcpy@plt>
mov    %ebx,%edi
mov    %r15,%rsi
mov    $0x8,%edx
call   1070 <connect@plt>
cmp    $0xffffffff,%eax
je     11e2 <socket_open+0x82>
mov    %ebx,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret
lea    0xe20(%rip),%rdi
jmp    11e9 <socket_open+0x89>
lea    0xe24(%rip),%rdi
call   1050 <perror@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_un = type { i32, i32 }
%struct.sockaddr = type { i32 }
@PF_UNIX = global i32 0
@SOCK_STREAM = global i32 0
@.str = [13 x i8] c"socket error\00"
@AF_UNIX = global i32 0
@.str.1 = [14 x i8] c"connect error\00"
define i32 @socket_open(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
%4 = alloca %struct.sockaddr_un
store i8* %0, i8** %2
%5 = load i32, i32* @PF_UNIX
%6 = load i32, i32* @SOCK_STREAM
%7 = call i32 @socket(i32 %5, i32 %6, i32 0)
store i32 %7, i32* %3
%8 = icmp eq i32 %7, -1
br i1 %8, label %9, label %12
9: ; preds = %1
%10 = call i32 @perror(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @exit(i32 -1)
unreachable
12: ; preds = %1
%13 = call i32 @memset(%struct.sockaddr_un* %4, i32 0, i32 8)
%14 = load i32, i32* @AF_UNIX
%15 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %4, i32 0, i32 1
store i32 %14, i32* %15
%16 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %4, i32 0, i32 0
%17 = load i32, i32* %16
%18 = load i8*, i8** %2
%19 = call i32 @strcpy(i32 %17, i8* %18)
%20 = load i32, i32* %3
%21 = bitcast %struct.sockaddr_un* %4 to %struct.sockaddr*
%22 = call i32 @connect(i32 %20, %struct.sockaddr* %21, i32 8)
%23 = icmp eq i32 %22, -1
br i1 %23, label %24, label %27
24: ; preds = %12
%25 = call i32 @perror(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0))
%26 = call i32 @exit(i32 -1)
unreachable
27: ; preds = %12
%28 = load i32, i32* %3
ret i32 %28
}

LLVM IR (-O2):
%struct.sockaddr_un = type { i32, i32 }
%struct.sockaddr = type { i32 }
@PF_UNIX = global i32 0
@SOCK_STREAM = global i32 0
@.str = [13 x i8] c"socket error\00"
@AF_UNIX = global i32 0
@.str.1 = [14 x i8] c"connect error\00"
define i32 @socket_open(i8* %0) {
%2 = alloca %struct.sockaddr_un
%3 = load i32, i32* @PF_UNIX
%4 = load i32, i32* @SOCK_STREAM
%5 = tail call i32 @socket(i32 %3, i32 %4, i32 0)
%6 = icmp eq i32 %5, -1
br i1 %6, label %7, label %10
7: ; preds = %1
%8 = tail call i32 @perror(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0))
%9 = tail call i32 @exit(i32 -1)
unreachable
10: ; preds = %1
%11 = bitcast %struct.sockaddr_un* %2 to i8*
%12 = call i32 @memset(%struct.sockaddr_un* %2, i32 0, i32 8)
%13 = load i32, i32* @AF_UNIX
%14 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %2, i64 0, i32 1
store i32 %13, i32* %14
%15 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %2, i64 0, i32 0
%16 = load i32, i32* %15
%17 = call i32 @strcpy(i32 %16, i8* %0)
%18 = bitcast %struct.sockaddr_un* %2 to %struct.sockaddr*
%19 = call i32 @connect(i32 %5, %struct.sockaddr* %18, i32 8)
%20 = icmp eq i32 %19, -1
br i1 %20, label %21, label %24
21: ; preds = %10
%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 = %10
ret i32 %5
}