This is the mail archive of the gdb@sourceware.org mailing list for the GDB 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: [PATCH] Built kernel without -O2 option

From: "Segher Boessenkool" <segher at kernel dot crashing dot org>
To: "Christian Borntraeger" <borntraeger at de dot ibm dot com>
Cc: Américo Wang <xiyou dot wangcong at gmail dot com>, "Hui Zhu" <teawater at gmail dot com>, linux-kernel at vger dot kernel dot org, gdb at sourceware dot org, hellogcc at freelists dot org, linux-kbuild at vger dot kernel dot org
Date: Mon, 29 Nov 2010 12:12:01 +0100 (CET)
Subject: Re: [PATCH] Built kernel without -O2 option
References: <AANLkTimewZ4QhxzL2vOYYV85pegy8Fu6Rb4XUAPqGUXS@mail.gmail.com> <20101129081619.GD5218@cr0.nay.redhat.com> <4CF37603.5080301@de.ibm.com>

> In essence -O2 just tells gcc to activate a list of optimizations
> gcc  -Q -O2 --help=optimizers
> tells you what.

Not quite; see http://gcc.gnu.org/wiki/FAQ#optimization-options .


Segher

Follow-Ups:
- Re: [PATCH] Built kernel without -O2 option
  - From: Christian Borntraeger

References:
- [PATCH] Built kernel without -O2 option
  - From: Hui Zhu
- Re: [PATCH] Built kernel without -O2 option
  - From: AmÃrico Wang
- Re: [PATCH] Built kernel without -O2 option
  - From: Christian Borntraeger

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