This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: speedup TER (28071 again)

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 25 Aug 2006 18:40:17 +0200
Subject: Re: speedup TER (28071 again)
References: <1156470878.30138.18.camel@localhost.localdomain> <44EF2531.4090208@codesourcery.com>

    * tree-outof-ssa.c (struct value_expr_d): Remove.
    (struct temp_expr_table_d): Change value_expr_p's to bitmap.  Delete
    free_list.
These do seem like big patches for Stage 3, and I would have to spend a lot of time to review them carefully -- so I'm not going to do so.

I've only skimmed the other patch, but this one is really simpler than it seems. It's changing a few linked lists into bitmaps, with no algorithmic changes -- that's it (see the changes to the structs).

If I have to choose one, I'd pick this one because it affects -O2 too; the other one is for -O3, and only solves "half" of the problem.

Paolo

References:
- speedup TER (28071 again)
  - From: Andrew MacLeod
- Re: speedup TER (28071 again)
  - From: Mark Mitchell

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]