Paolo Bonzini - Re: [dataflow] [RFC] Remove many almost useless DCE passes (original) (raw)

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• From: Paolo Bonzini
• To: Vladimir Makarov
• Cc: Steven Bosscher , GCC Patches , Kenneth Zadeck
• Date: Tue, 27 Feb 2007 16:52:37 +0100
• Subject: Re: [dataflow] [RFC] Remove many almost useless DCE passes
• References: <45E3D856.1030007@lu.unisi.ch> <571f6b510702262323l65ad866drb110392ca39c1643@mail.gmail.com> <45E3DD5B.4040206@lu.unisi.ch> <45E44626.2000402@redhat.com> <45E446CC.4030106@lu.unisi.ch> <45E44B63.8080609@redhat.com> <571f6b510702270742q318254beha843442d15d37c1@mail.gmail.com> <45E45391.4080705@redhat.com>

Then you are probably moving in wrong direction worsening the generated code. It is not only performance. The generated code size for x86_64 (SPECInt2000) was 0.5% bigger on the branch before the patch and I am sure it will be even bigger after the patch.

The patch will never be applied. It was not meant to be.Paolo

• Follow-Ups:
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Vladimir Makarov
• References:
  • [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Paolo Bonzini
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Steven Bosscher
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Paolo Bonzini
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Vladimir Makarov
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Paolo Bonzini
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Vladimir Makarov
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Steven Bosscher
  • Re: [dataflow] [RFC] Remove many almost useless DCE passes
    * From: Vladimir Makarov