unsigned int xat_attribute_hash(register const char *str,
                                register unsigned int len) {
  static const unsigned char asso_values[] = {
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 0,  13, 13, 13, 13, 13, 5,  13, 5,
      13, 0,  13, 13, 13, 13, 13, 13, 0,  0,  13, 0,  13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
      13, 13, 13, 13};
  return len + asso_values[(unsigned char)str[0]];
}


x86 assembly (clang, -O0):
<xat_attribute_hash>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
mov    -0x8(%rbp),%rcx
movzbl (%rcx),%ecx
mov    %ecx,%edx
lea    0xee2(%rip),%rcx
movzbl (%rcx,%rdx,1),%ecx
add    %ecx,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<xat_attribute_hash>:
movzbl (%rdi),%eax
lea    0xef6(%rip),%rcx
movzbl (%rax,%rcx,1),%eax
add    %esi,%eax
ret

LLVM IR (-O0):
@xat_attribute_hash.asso_values = internal constant [256 x i8] c"\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\00\0D\0D\0D\0D\0D\05\0D\05\0D\00\0D\0D\0D\0D\0D\0D\00\00\0D\00\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D"
define i32 @xat_attribute_hash(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
%5 = load i32, i32* %4
%6 = load i8*, i8** %3
%7 = getelementptr inbounds i8, i8* %6, i64 0
%8 = load i8, i8* %7
%9 = zext i8 %8 to i64
%10 = getelementptr inbounds [256 x i8], [256 x i8]* @xat_attribute_hash.asso_values, i64 0, i64 %9
%11 = load i8, i8* %10
%12 = zext i8 %11 to i32
%13 = add i32 %5, %12
ret i32 %13
}

LLVM IR (-O2):
@xat_attribute_hash.asso_values = internal unnamed_addr constant [256 x i8] c"\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\00\0D\0D\0D\0D\0D\05\0D\05\0D\00\0D\0D\0D\0D\0D\0D\00\00\0D\00\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D\0D"
define i32 @xat_attribute_hash(i8* nocapture %0, i32 %1) {
%3 = load i8, i8* %0
%4 = zext i8 %3 to i64
%5 = getelementptr inbounds [256 x i8], [256 x i8]* @xat_attribute_hash.asso_values, i64 0, i64 %4
%6 = load i8, i8* %5
%7 = zext i8 %6 to i32
%8 = add i32 %7, %1
ret i32 %8
}