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[Bug rtl-optimization/31360] [4.2 Regression] rtl loop invariant is broken
- From: "rearnsha at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 May 2007 14:34:56 -0000
- Subject: [Bug rtl-optimization/31360] [4.2 Regression] rtl loop invariant is broken
- References: <bug-31360-6528@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #21 from rearnsha at gcc dot gnu dot org 2007-05-06 15:34 -------
(In reply to comment #20)
> Re. comment #19: What "code size regression"? Your comment is too unspecific.
>
The code size regression that shows up on CSiBE between r123918 and r123919 on
ARM, mips and PPC (at least). Just build CSiBE at -Os with and without this
patch. On ARM this is approx 0.3%, which is a significant move (given that a
good improvement is normally about 0.01%).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31360