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Re: [PATCH] New and semi-improved PHI-OPT

From: Diego Novillo <dnovillo at redhat dot com>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: gcc-patches at gcc dot gnu dot org
Date: Mon, 07 Mar 2005 07:39:29 -0500
Subject: Re: [PATCH] New and semi-improved PHI-OPT
Organization: Red Hat Canada
References: <c81857d3aa4cce84c410384a29a0bae0@physics.uc.edu>

Andrew Pinski wrote:

    PR tree-opt/17671
    * tree-ssa-phiopt.c (tree_ssa_phiopt): Rewrite so we base the
    bbs on the COND_EXPR instead of the PHI_NODEs.
    (candidate_bb_for_phi_optimization): Remove.
    (replace_phi_with_stmt): Rename to ...
    (replace_phi_edge_with_variable): this and change so that we
    replace the phi argument instead of removing the PHI.
    (conditional_replacement): Change so we deal with PHI with more
    than two arguments.
    (value_replacement): Likewise.
    (abs_replacement): Likewise.

OK after addressing Kazu's feedback.

Diego.

References:
- [PATCH] New and semi-improved PHI-OPT
  - From: Andrew Pinski

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