Those pesky incomprehensible if statements

[Theodore Papadopoulo]

zackw@stanford.edu said:
> But I still had to stare at it for, oh, thirty seconds before I could
> see what it does, because it's buried under all the verbiage.  And I
> said to myself, what we need here is some syntactic sugar.  Something
> like

>   if (match_p (set, '(set (stack_pointer_rtx) 
> 			  (plus (stack_pointer_rtx) (const_int)))))

> Isn't that so much easier to read?

> Of course, I have not the slightest notion how to implement such a
> thing such that the minilanguage has a sensible grammar and the
> implementation doesn't slow the compiler to a crawl. 

Um, um... A special preprocessor ;-)
Ugly... definitely, but clearly an improved readability !!!
Of course, the sensible grammar problem remains...



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Theodore Papadopoulo
Email: Theodore.Papadopoulo@sophia.inria.fr Tel: (33) 04 92 38 76 01
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