On 04/10/11 17:20, Peter Bigot wrote:
> On Tue, Oct 4, 2011 at 9:34 AM, David Brown<da...@westcontrol.com> wrote:
>
>>
>> Does link-time optimisation work on mpcgcc? As LTO matures, it should make
>> things like -ffunction-sections obsolete (compile everything with -flto,
>> then use -fwhole-program in the link). Of course, LTO makes debugging a bit
>> more of a challenge.
>>
>
> The msp430 extensions to binutils have not been adapted for LTO. Assessment
> of LTO is part of phase 6 on a proposed roadmap for mspgcc enhancements.
> Phases 1 through 5 are estimated to be 500 hours effort and will lead to
> 20-bit support. I hope to start within a few weeks.
>
I am consistently impressed by how much you manage to do for mspgcc.
Although I haven't actually used the compiler for some time (I've
recently used AVR's more on small projects), I am very grateful to you
(and the other mspgcc developers).
Although I think LTO will be a big step forward, I fully agree with your
prioritising - lack of 20-bit support is a hinder for mspgcc. I have a
project where we had to move from mspgcc to Code Composter, to get the
support for large flash space - and it really was a step into the dark
ages. If only TI would sponsor you, with the aim of shifting out the
CCS tools with mspgcc!
> Peter
>
>
>>
>> mvh.,
>>
>> David
>>
>>
>>
>> On 04/10/2011 16:18, Peter Bigot wrote:
>>
>>> Use the version of mspgcc on the current git trunk, or wait for the
>>> first 4.6.x-based release which will include the following:
>>>
>>> commit dbd2219822a8ddbd59238c154f84cd**d4b0c065c3 Author: Peter A.
>>> Bigot<pabigot@users.**sourceforge.net<pabi...@users.sourceforge.net>>
>>> Date: Fri Aug 5 08:32:31 2011
>>> -0500
>>>
>>> Put function-local string constants into unique rodata where
>>> appropriate
>>>
>>> Peter
>>>
>>> On Tue, Oct 4, 2011 at 8:56 AM, Bustamante,
>>> Paul<pbustama...@ceit.es>**wrote:
>>>
>>> Dear all,
>>>>
>>>> I have a question with GCC compiler. When I have a function that I
>>>> don't need to compile, I use the options "-ffunction-sections
>>>> -fdata-sections" and in the linker --gc-sections. That's ok, but if
>>>> I have a sentence like this, inside that function: printf("text to
>>>> print");, I saw that in the code I have the string "text to print",
>>>> and if I have more, more large is the code.
>>>>
>>>> Somebody can tell me how to avoid this?
>>>>
>>>> Best regards,
>>>>
>>>> Paul
>>>>
>>>>
>
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