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Re: ABI voilation

From: Andrew Haley <aph-gcc at littlepinkcloud dot COM>
To: Tim Prince <tprince at computer dot org>
Cc: kanishk rastogi <kanishk dot 85 at gmail dot com>, gcc-help at gcc dot gnu dot org
Date: Mon, 8 Oct 2007 13:48:10 +0100
Subject: Re: ABI voilation
References: <9ee2fe770710072302s1d2f819ci6272529738339d72@mail.gmail.com> <470A25D6.5050506@computer.org>

Tim Prince writes:
 > kanishk rastogi wrote:
 > > hi all,
 > > I wanted to know if when i specify -O[0-3] flag to gcc does gcc
 > > optimize the code even violating ABI for that specific arch.
 > > If yes can i specify gcc not to violate the ABI ....
 > > I am mostly concerned witht he ABI specification which tells how to
 > > call another function..
 > > 
 > 
 > Only the -Os changes the value of -mpreferred-stack-boundary, breaking
 > the ability to support vectorization or other alignment dependent code
 > in the callee.

-Os breaks vectorization?  That would be A Bug, for sure.  Do you have
references, Bugzilla entries, for this?

Andrew.

Follow-Ups:
- Re: ABI voilation
  - From: Dorit Nuzman

References:
- ABI voilation
  - From: kanishk rastogi
- Re: ABI voilation
  - From: Tim Prince

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