#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*/ AF_INET;
int /*<<< orphan*/ SOCK_STREAM;
int /*<<< orphan*/ close(int);
int /*<<< orphan*/ printf(char *, ...);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int main(void) {
  int soc;
  soc = socket(AF_INET, SOCK_STREAM, 0);
  if (soc == -1) {
    printf("socket error!\n");
    return -1;
  }
  printf("soc = %d\n", soc);
  close(soc);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2ea2(%rip),%rax
mov    (%rax),%edi
mov    0x2e89(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   1050 <socket@plt>
mov    %eax,-0x8(%rbp)
cmpl   $0xffffffff,-0x8(%rbp)
jne    117f <main+0x4f>
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    119f <main+0x6f>
mov    -0x8(%rbp),%esi
lea    0xe86(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%edi
call   1040 <close@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
mov    0x2e9e(%rip),%rax
mov    (%rax),%edi
mov    0x2e85(%rip),%rax
mov    (%rax),%esi
xor    %ebx,%ebx
xor    %edx,%edx
call   1060 <socket@plt>
cmp    $0xffffffff,%eax
je     117e <main+0x3e>
mov    %eax,%ebp
lea    0xe94(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebp,%edi
call   1050 <close@plt>
jmp    118f <main+0x4f>
lea    0xe85(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffff,%ebx
mov    %ebx,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str = [15 x i8] c"socket error!\0A\00"
@.str.1 = [10 x i8] c"soc = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = load i32, i32* @AF_INET
%4 = load i32, i32* @SOCK_STREAM
%5 = call i32 @socket(i32 %3, i32 %4, i32 0)
store i32 %5, i32* %2
%6 = load i32, i32* %2
%7 = icmp eq i32 %6, -1
br i1 %7, label %8, label %10
8: ; preds = %0
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
store i32 -1, i32* %1
br label %15
10: ; preds = %0
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32 %11)
%13 = load i32, i32* %2
%14 = call i32 @close(i32 %13)
store i32 0, i32* %1
br label %15
15: ; preds = %10, %8
%16 = load i32, i32* %1
ret i32 %16
}

LLVM IR (-O2):
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str.1 = [10 x i8] c"soc = %d\0A\00"
@str = [14 x i8] c"socket error!\00"
define i32 @main() {
%1 = load i32, i32* @AF_INET
%2 = load i32, i32* @SOCK_STREAM
%3 = tail call i32 @socket(i32 %1, i32 %2, i32 0)
%4 = icmp eq i32 %3, -1
br i1 %4, label %5, label %7
5: ; preds = %0
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @str, i64 0, i64 0))
br label %10
7: ; preds = %0
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%9 = tail call i32 @close(i32 %3)
br label %10
10: ; preds = %7, %5
%11 = phi i32 [ -1, %5 ], [ 0, %7 ]
ret i32 %11
}