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Re: [Bug tree-optimization/23361] Can't eliminate empty loops withpower of two step and variable bounds

From: Daniel Berlin <dberlin at dberlin dot org>
To: gcc-bugzilla at gcc dot gnu dot org
Cc: gcc-bugs at gcc dot gnu dot org
Date: Fri, 12 Aug 2005 19:43:15 -0400
Subject: Re: [Bug tree-optimization/23361] Can't eliminate empty loops withpower of two step and variable bounds
References: <20050812185248.23361.chris@bubblescope.net> <20050812191032.27086.qmail@sourceware.org>

On Fri, 2005-08-12 at 19:10 +0000, pinskia at gcc dot gnu dot org wrote:
> ------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-12 19:10 -------

Personally, i think -funsafe-loop-optimizations should be on by default
in -O3, with a warning for when we rely on it.

It's *incredibly* rare that a user actually intends for a loop counter
to be able to overflow.

References:
- [Bug rtl-optimization/23361] New: Can't eliminate empty loops with power of two step and variable bounds
  - From: chris at bubblescope dot net
- [Bug tree-optimization/23361] Can't eliminate empty loops with power of two step and variable bounds
  - From: pinskia at gcc dot gnu dot org

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