------- Additional Comments From dnovillo at redhat dot com 2005-09-23 12:30 ------- Subject: Re: CCP is broken
On September 23, 2005 01:29, kazu at gcc dot gnu dot org wrote: > ------- Additional Comments From kazu at gcc dot gnu dot org > 2005-09-23 05:29 ------- The reason why CCP thinks that the result of > the PHI node is varying is because ccp_initialize thinks that a PHI > node is varying if at least one of PHI argument is varying. > This is very related to 23588. The heuristics to speed up propagation are crippling the propagator. likely_value and ccp_initialize are the main functions to start fixing. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24028
