#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 */
scalar_t__ strncmp(char *, char const *, int);
int is_this_server_link(char const *link) {
  if (0 == strncmp("http://", link, 7))
    return 0;
  else if (0 == strncmp("https://", link, 8))
    return 0;
  else if (0 == strncmp("ftp://", link, 6))
    return 0;
  else
    return 1;
}


x86 assembly (clang, -O0):
<is_this_server_link>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rsi
lea    0xed9(%rip),%rdi
mov    $0x7,%edx
call   1030 <strncmp@plt>
mov    %rax,%rcx
xor    %eax,%eax
cmp    %rcx,%rax
jne    114b <is_this_server_link+0x3b>
movl   $0x0,-0x4(%rbp)
jmp    11b0 <is_this_server_link+0xa0>
mov    -0x10(%rbp),%rsi
lea    0xeb2(%rip),%rdi
mov    $0x8,%edx
call   1030 <strncmp@plt>
mov    %rax,%rcx
xor    %eax,%eax
cmp    %rcx,%rax
jne    117a <is_this_server_link+0x6a>
movl   $0x0,-0x4(%rbp)
jmp    11b0 <is_this_server_link+0xa0>
mov    -0x10(%rbp),%rsi
lea    0xe8c(%rip),%rdi
mov    $0x6,%edx
call   1030 <strncmp@plt>
mov    %rax,%rcx
xor    %eax,%eax
cmp    %rcx,%rax
jne    11a9 <is_this_server_link+0x99>
movl   $0x0,-0x4(%rbp)
jmp    11b0 <is_this_server_link+0xa0>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<is_this_server_link>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rdi
mov    %rbx,%rsi
mov    $0x7,%edx
call   1030 <strncmp@plt>
xor    %ebp,%ebp
test   %rax,%rax
je     1167 <is_this_server_link+0x57>
lea    0xed0(%rip),%rdi
mov    %rbx,%rsi
mov    $0x8,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     1167 <is_this_server_link+0x57>
lea    0xec0(%rip),%rdi
mov    %rbx,%rsi
mov    $0x6,%edx
call   1030 <strncmp@plt>
xor    %ebp,%ebp
test   %rax,%rax
setne  %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [8 x i8] c"http://\00"
@.str.1 = [9 x i8] c"https://\00"
@.str.2 = [7 x i8] c"ftp://\00"
define i32 @is_this_server_link(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strncmp(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i8* %4, i32 7)
%6 = icmp eq i64 0, %5
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 0, i32* %2
br label %19
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strncmp(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i8* %9, i32 8)
%11 = icmp eq i64 0, %10
br i1 %11, label %12, label %13
12: ; preds = %8
store i32 0, i32* %2
br label %19
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strncmp(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i8* %14, i32 6)
%16 = icmp eq i64 0, %15
br i1 %16, label %17, label %18
17: ; preds = %13
store i32 0, i32* %2
br label %19
18: ; preds = %13
store i32 1, i32* %2
br label %19
19: ; preds = %18, %17, %12, %7
%20 = load i32, i32* %2
ret i32 %20
}

LLVM IR (-O2):
@.str = [8 x i8] c"http://\00"
@.str.1 = [9 x i8] c"https://\00"
@.str.2 = [7 x i8] c"ftp://\00"
define i32 @is_this_server_link(i8* %0) {
%2 = tail call i64 @strncmp(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i8* %0, i32 7)
%3 = icmp eq i64 %2, 0
br i1 %3, label %11, label %4
4: ; preds = %1
%5 = tail call i64 @strncmp(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0), i8* %0, i32 8)
%6 = icmp eq i64 %5, 0
br i1 %6, label %11, label %7
7: ; preds = %4
%8 = tail call i64 @strncmp(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i8* %0, i32 6)
%9 = icmp ne i64 %8, 0
%10 = zext i1 %9 to i32
br label %11
11: ; preds = %7, %4, %1
%12 = phi i32 [ 0, %1 ], [ 0, %4 ], [ %10, %7 ]
ret i32 %12
}