#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__ strchr(char const *, char);
char *strpbrk(const char *str, const char *set) {
  char *result = (char *)str;
  for (; result[0] != '\0'; result++)
    if (strchr(set, result[0]) != 0)
      return result;
  return 0;
}


x86 assembly (clang, -O0):
<strpbrk>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rax
movsbl (%rax),%eax
cmp    $0x0,%eax
je     1175 <strpbrk+0x65>
mov    -0x18(%rbp),%rdi
mov    -0x20(%rbp),%rax
movsbl (%rax),%esi
call   1030 <strchr@plt>
cmp    $0x0,%rax
je     115f <strpbrk+0x4f>
mov    -0x20(%rbp),%rax
mov    %rax,-0x8(%rbp)
jmp    117d <strpbrk+0x6d>
jmp    1164 <strpbrk+0x54>
mov    -0x20(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x20(%rbp)
jmp    1128 <strpbrk+0x18>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<strpbrk>:
push   %r14
push   %rbx
push   %rax
mov    (%rdi),%al
test   %al,%al
je     113c <strpbrk+0x2c>
mov    %rsi,%r14
mov    %rdi,%rbx
movsbl %al,%esi
mov    %r14,%rdi
call   1030 <strchr@plt>
test   %rax,%rax
jne    113e <strpbrk+0x2e>
movzbl 0x1(%rbx),%eax
add    $0x1,%rbx
test   %al,%al
jne    1120 <strpbrk+0x10>
xor    %ebx,%ebx
mov    %rbx,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

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

LLVM IR (-O2):
define i8* @strpbrk(i8* %0, i8* %1) {
%3 = load i8, i8* %0
%4 = icmp eq i8 %3, 0
br i1 %4, label %14, label %5
5: ; preds = %2, %10
%6 = phi i8 [ %12, %10 ], [ %3, %2 ]
%7 = phi i8* [ %11, %10 ], [ %0, %2 ]
%8 = tail call i64 @strchr(i8* %1, i8 signext %6)
%9 = icmp eq i64 %8, 0
br i1 %9, label %10, label %14
10: ; preds = %5
%11 = getelementptr inbounds i8, i8* %7, i64 1
%12 = load i8, i8* %11
%13 = icmp eq i8 %12, 0
br i1 %13, label %14, label %5
14: ; preds = %5, %10, %2
%15 = phi i8* [ null, %2 ], [ null, %10 ], [ %7, %5 ]
ret i8* %15
}