From: "H.J. Lu" <hjl.tools@gmail.com>
To: GCC Patches <gcc-patches@gcc.gnu.org>
Subject: PING: PATCH: PR target/46770: Use .init_array/.fini_array sections
Date: Mon, 21 Mar 2011 18:40:00 -0000 [thread overview]
Message-ID: <AANLkTik8RB9N52grGxMbpj14jwzoLB0oRYdKnmAXyESu@mail.gmail.com> (raw)
On Mon, Mar 14, 2011 at 12:28 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Thu, Jan 27, 2011 at 2:40 AM, Richard Guenther
> <richard.guenther@gmail.com> wrote:
>> On Thu, Jan 27, 2011 at 12:12 AM, H.J. Lu <hongjiu.lu@intel.com> wrote:
>>> On Tue, Dec 14, 2010 at 05:20:48PM -0800, H.J. Lu wrote:
>>>> This patch uses .init_array/.fini_array sections instead of
>>>> .ctors/.dtors sections if mixing .init_array/.fini_array and
>>>> .ctors/.dtors sections with init_priority works.
>>>>
>>>> It removes .ctors/.ctors sections from executables and DSOes, which will
>>>> remove one function call at startup time from each executable and DSO.
>>>> It should reduce image size and improve system startup time.
>>>>
>>>> If a platform with a working .init_array/.fini_array support needs a
>>>> different .init_array/.fini_array implementation, it can set
>>>> use_initfini_array to no.
>>>>
>>>> Since .init_array/.fini_array is a target feature. --enable-initfini-array
>>>> is default to no unless the native run-time test is passed.
>>>>
>>>> To pass the native run-time test, a linker with SORT_BY_INIT_PRIORITY
>>>> support is required. The binutils patch is available at
>>>>
>>>> http://sourceware.org/ml/binutils/2010-12/msg00466.html
>>>
>>> Linker patch has been checked in.
>>>
>>>>
>>>> This patch passed 32bit/64bit regression test on Linux/x86-64. Any
>>>> comments?
>>>>
>>>
>>> This updated patch fixes build on Linux/ia64 and should work on others.
>>> Any comments?
>>
>> Yes. This is stage1 material.
>>
>
> Here is the updated patch. OK for trunk?
>
> Thanks.
>
>
> --
> H.J.
> ----
> 2011-03-14 H.J. Lu <hongjiu.lu@intel.com>
>
> PR target/46770
> * acinclude.m4 (gcc_AC_INITFINI_ARRAY): Removed.
>
> * config.gcc (use_initfini_array): New variable.
> Use initfini-array.o if supported.
>
> * crtstuff.c: Don't generate .ctors nor .dtors sections if
> NO_CTORS_DTORS_SECTIONS is defined.
>
> * configure.ac: Remove gcc_AC_INITFINI_ARRAY. Add
> --enable-initfini-array and check if .init_array can be used with
> .ctors.
>
> * configure: Regenerated.
>
> * config/initfini-array.c: New.
> * config/initfini-array.h: Likewise.
> * config/t-initfini-array: Likewise.
>
> * config/arm/arm.c (arm_asm_init_sections): Call
> elf_initfini_array_init_sections if NO_CTORS_DTORS_SECTIONS
> is defined.
> * config/avr/avr.c (avr_asm_init_sections): Likewise.
> * config/ia64/ia64.c (ia64_asm_init_sections): Likewise.
> * config/mep/mep.c (mep_asm_init_sections): Likewise.
> * config/microblaze/microblaze.c (microblaze_elf_asm_init_sections):
> Likewise.
> * config/rs6000/rs6000.c (rs6000_elf_asm_init_sections): Likewise.
> * config/stormy16/stormy16.c (xstormy16_asm_init_sections):
> Likewise.
> * config/v850/v850.c (v850_asm_init_sections): Likewise.
>
PING:
http://gcc.gnu.org/ml/gcc-patches/2011-03/msg00760.html
--
H.J.
next reply other threads:[~2011-03-21 18:40 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-21 18:40 H.J. Lu [this message]
2011-03-31 15:15 ` H.J. Lu
2011-04-14 19:11 ` H.J. Lu
2011-04-26 13:08 ` H.J. Lu
2011-05-18 17:30 ` H.J. Lu
2011-06-01 23:30 ` Carrot Wei
2011-06-03 4:31 ` H.J. Lu
2011-06-03 12:31 ` Richard Guenther
2011-06-03 12:52 ` H.J. Lu
2011-06-19 20:02 ` H.J. Lu
2011-06-19 21:31 ` Uros Bizjak
2011-07-22 12:31 ` H.J. Lu
2011-07-22 12:36 ` Rainer Orth
2011-07-22 12:36 ` H.J. Lu
2011-07-22 13:20 ` Rainer Orth
2011-07-22 12:37 ` Jakub Jelinek
2011-07-22 13:21 ` Joseph S. Myers
2011-07-22 13:29 ` H.J. Lu
2011-07-22 14:17 ` H.J. Lu
2011-07-22 14:55 ` H.J. Lu
2011-08-06 14:51 ` H.J. Lu
2011-08-09 14:32 ` H.J. Lu
2011-08-14 19:20 ` H.J. Lu
2011-08-19 10:05 ` Jakub Jelinek
2011-08-19 14:58 ` H.J. Lu
2011-08-19 15:54 ` Jakub Jelinek
2011-08-20 21:16 ` H.J. Lu
2012-03-19 20:35 ` DJ Delorie
2012-03-19 20:40 ` Andrew Pinski
2012-03-19 20:42 ` DJ Delorie
2011-07-01 14:12 ` H.J. Lu
2011-06-03 17:13 ` Michael Eager
2011-08-22 7:39 David Edelsohn
2011-08-22 7:44 ` H.J. Lu
2011-08-22 7:46 ` Jakub Jelinek
2011-08-22 14:23 ` H.J. Lu
2011-08-22 15:27 ` H.J. Lu
2011-08-22 15:46 ` Paolo Bonzini
2011-08-22 17:37 ` H.J. Lu
2011-08-22 18:33 ` H.J. Lu
2011-08-22 19:12 ` Joseph S. Myers
2011-08-22 19:19 ` H.J. Lu
2011-08-22 19:38 ` Joseph S. Myers
2011-08-22 20:50 ` H.J. Lu
2011-08-22 7:46 ` David Edelsohn
2011-08-22 16:26 ` H.J. Lu
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