[Bug tree-optimization/17790] [4.0 Regression] Significant compile time increases for sixtrack with tree LICM and IV optimization

[rakdver at atrey dot karlin dot mff dot cuni dot cz]

------- Additional Comments From rakdver at atrey dot karlin dot mff dot cuni dot cz  2004-12-06 00:12 -------
Subject: Re:  [4.0 Regression] Significant compile time increases for sixtrack with tree LICM and IV optimization

> ------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-06 00:02 -------
> Hmm, I found another testcase where we are slow at LIM:
>  loop invariant motion :   2.55 ( 5%) usr   0.40 ( 3%) sys   3.36 ( 4%) wall
> This is PR8361.
> 
> Zdenek can you update your patch for the changes where V_MUST_DEF changes and see what the 
> compile time improvements you get with the patch?

there is an updated version of the patch

http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01642.html

that should work (possibly with minor changes due to some renaming).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17790