[Bug target/66697] Feature request: -mstackrealign and force_align_arg_pointer for x86_64

["hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66697

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |hjl.tools at gmail dot com

--- Comment #20 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #19)
> (In reply to Justas L from comment #18)
> > Out of curiosity, what could it be that makes -mincoming-stack-boundary=3
> > successfully deal with rogue code while -mstackrealign fails at that?
> > Shouldn't -mstackrealign do the same job without being told what the outside
> > stack alignment is, or am I misunderstanding it?
> 
> -mstackrealign conditionally generates realignment prologue, depending on
> presence of insns that require 128bit alignment. It looks that heuristics is
> not yet fully reliable on x86_64. Bugreports welcome!

-mstackrealign works correctly as designed on x86-64.  The
issue is MIN_STACK_BOUNDARY.  When MIN_STACK_BOUNDARY is 128,
you don't need to realign the stack if you only need 128-bit
stack alignment.
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Subject: [Bug fortran/65889] [6 Regressions] [OOP] ICE with sizeof a polymorphic variable.
Date: Wed, 07 Oct 2015 10:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide889

--- Comment #4 from vehre at gcc dot gnu.org ---
Author: vehre
Date: Wed Oct  7 10:58:46 2015
New Revision: 228566

URL: https://gcc.gnu.org/viewcvs?rev"8566&root=gcc&view=rev
Log:
gcc/fortran/ChangeLog:

2015-10-07  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/65889
        * trans-intrinsic.c (gfc_conv_intrinsic_sizeof): Handle pointer to and
        on stack class objects as sizeof parameter.

gcc/testsuite/ChangeLog:

2015-10-07  Andre Vehreschild  <vehre@gcc.gnu.org>

        PR fortran/65889
        * gfortran.dg/sizeof_5.f90: New test.



Added:
    trunk/gcc/testsuite/gfortran.dg/sizeof_5.f90
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/trans-intrinsic.c
    trunk/gcc/testsuite/ChangeLog