#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__ strcmp(char const *, char *);
int is_in_array(const char *needle, char **haystack) {
  for (int i = 0; 0 != haystack[i]; i++) {
    if (0 == strcmp(needle, haystack[i])) {
      return 1;
    }
  }
  return 0;
}


x86 assembly (clang, -O0):
<is_in_array>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
mov    -0x18(%rbp),%rcx
movslq -0x1c(%rbp),%rdx
xor    %eax,%eax
cmp    (%rcx,%rdx,8),%rax
je     117d <is_in_array+0x6d>
mov    -0x10(%rbp),%rdi
mov    -0x18(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
call   1030 <strcmp@plt>
mov    %rax,%rcx
xor    %eax,%eax
cmp    %rcx,%rax
jne    116a <is_in_array+0x5a>
movl   $0x1,-0x4(%rbp)
jmp    1184 <is_in_array+0x74>
jmp    116f <is_in_array+0x5f>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    1127 <is_in_array+0x17>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<is_in_array>:
push   %r14
push   %rbx
push   %rax
mov    %rsi,%rbx
mov    (%rsi),%rsi
test   %rsi,%rsi
je     1153 <is_in_array+0x43>
mov    %rdi,%r14
add    $0x8,%rbx
cs nopw 0x0(%rax,%rax,1)
mov    %r14,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1149 <is_in_array+0x39>
mov    (%rbx),%rsi
add    $0x8,%rbx
test   %rsi,%rsi
jne    1130 <is_in_array+0x20>
xor    %ecx,%ecx
test   %rax,%rax
sete   %cl
jmp    1155 <is_in_array+0x45>
xor    %ecx,%ecx
mov    %ecx,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
define i32 @is_in_array(i8* %0, i8** %1) {
%3 = alloca i32
%4 = alloca i8*
%5 = alloca i8**
%6 = alloca i32
store i8* %0, i8** %4
store i8** %1, i8*** %5
store i32 0, i32* %6
br label %7
7: ; preds = %25, %2
%8 = load i8**, i8*** %5
%9 = load i32, i32* %6
%10 = sext i32 %9 to i64
%11 = getelementptr inbounds i8*, i8** %8, i64 %10
%12 = load i8*, i8** %11
%13 = icmp ne i8* null, %12
br i1 %13, label %14, label %28
14: ; preds = %7
%15 = load i8*, i8** %4
%16 = load i8**, i8*** %5
%17 = load i32, i32* %6
%18 = sext i32 %17 to i64
%19 = getelementptr inbounds i8*, i8** %16, i64 %18
%20 = load i8*, i8** %19
%21 = call i64 @strcmp(i8* %15, i8* %20)
%22 = icmp eq i64 0, %21
br i1 %22, label %23, label %24
23: ; preds = %14
store i32 1, i32* %3
br label %29
24: ; preds = %14
br label %25
25: ; preds = %24
%26 = load i32, i32* %6
%27 = add nsw i32 %26, 1
store i32 %27, i32* %6
br label %7
28: ; preds = %7
store i32 0, i32* %3
br label %29
29: ; preds = %28, %23
%30 = load i32, i32* %3
ret i32 %30
}

LLVM IR (-O2):
define i32 @is_in_array(i8* %0, i8** nocapture %1) {
%3 = load i8*, i8** %1
%4 = icmp eq i8* %3, null
br i1 %4, label %17, label %9
5: ; preds = %9
%6 = getelementptr inbounds i8*, i8** %1, i64 %14
%7 = load i8*, i8** %6
%8 = icmp eq i8* %7, null
br i1 %8, label %15, label %9
9: ; preds = %2, %5
%10 = phi i64 [ %14, %5 ], [ 0, %2 ]
%11 = phi i8* [ %7, %5 ], [ %3, %2 ]
%12 = tail call i64 @strcmp(i8* %0, i8* %11)
%13 = icmp eq i64 %12, 0
%14 = add nuw i64 %10, 1
br i1 %13, label %15, label %5
15: ; preds = %9, %5
%16 = zext i1 %13 to i32
br label %17
17: ; preds = %15, %2
%18 = phi i32 [ 0, %2 ], [ %16, %15 ]
ret i32 %18
}