REQUIRES_FRAME_POINTER

[Gaël Thomas]

Exactly :) clang assumes -fomit-frame-pointer with -O3 on linux/x86_64,

Gaël
Le 10 janv. 2014 21:36, "Eric Christopher" <echristo at gmail.com> a écrit :

> It's definitely what's expected, basically working around compilers that
> assume -fomit-frame-pointer by default?
>
> -eric
>
> On Fri Jan 10 2014 at 7:12:02 AM, Rafael Espíndola <
> rafael.espindola at gmail.com> wrote:
>
>> Seems reasonable. CCing Eric who is the code owner of configure/make
>> build system.
>>
>> On 23 December 2013 14:56, Gaël Thomas <gael.thomas00 at gmail.com> wrote:
>> > Hi all,
>> >
>> > I made a small patch to modify the file Makefile.rules when the flag
>> > REQUIRES_FRAME_POINTER is used. In this case, I have added the
>> > -fno-omit-frame-pointer flag to force the use of the frame pointer.
>> > It's mandatory for vmkit, which supposes that all the frames are
>> > "well" formed in the sense that they use frame pointers (we rely on
>> > the frame pointers to inspect the stack during a collection). As the
>> > flag already exists, I think that forcing frame pointers is exactly
>> > what the user could expect, even when the code is optimized?
>> >
>> > See you,
>> > Gaël
>> >
>> >
>> >
>> > --
>> > -------------------------------------------------------------------
>> > Gaël Thomas, Associate Professor, UPMC
>> > http://pagesperso-systeme.lip6.fr/Gael.Thomas/
>> > -------------------------------------------------------------------
>> >
>> > _______________________________________________
>> > llvm-commits mailing list
>> > llvm-commits at cs.uiuc.edu
>> > http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>> >
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20140110/46fed0c2/attachment.html>