[Issue 10866] Regression (2.064 git-head) Massive compiler slowdown

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10866



--- Comment #17 from Dmitry Olshansky <dmitry.olsh at gmail.com> 2013-09-12 15:19:35 PDT ---
(In reply to comment #16)
> I think that it's not the tables but rather the subtle thing is that 
> a lot of tempalted code runs std.format and then we have this:
> 
> private void formatChar(Writer)(Writer w, in dchar c, in char quote)
> {
>    import std.uni : isGraphical;
> 
>     if (std.uni.isGraphical(c))
>     {
>         if (c == quote || c == '\\')
>             put(w, '\\'), put(w, c);
>         else
>             put(w, c);
>     }
> 
> That bounces as at CTFE to this:
> 
> bool isGraphical(dchar c)
> {
>     static immutable graphicalTrie = asTrie(graphicalTrieEntries);
>     return graphicalTrie[c];
> }
> 
> And that hurts as there is no longer ASCII only case in place 
> and said trie look up is only fast at R-T with proper inlining.

Well that's not the case with simple import std.stdio + empty main.

I think our only way out is to isolate the unicode_tables is separate
compilation + ~ .di file so that compiler doesn't have to re-tokenize 1.3M
file.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------