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Subject: [Bug middle-end/36253] Caller-save stack slot may not have proper alignment
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------- Comment #4 from hjl at gcc dot gnu dot org  2008-05-17 23:58 -------
Subject: Bug 36253

Author: hjl
Date: Sat May 17 23:57:59 2008
New Revision: 135486

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135486
Log:
2008-05-17  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/36253
        * caller-save.c (insert_restore): Verify alignment of spill
        space.
        (insert_save): Likewise.

        * cfgexpand.c (LOCAL_ALIGNMENT): Removed.
        (get_decl_align_unit): Pass VOIDmode to LOCAL_ALIGNMENT.

        * defaults.h (LOCAL_ALIGNMENT): New. Provide default.

        * function.c (LOCAL_ALIGNMENT): Removed.
        (get_stack_local_alignment): New.
        (assign_stack_local): Use it.  Set alignment on stack slot.
        (assign_stack_temp_for_type): Use get_stack_local_alignment.

        * config/bfin/bfin.c (bfin_local_alignment): Updated.
        * config/bfin/bfin.h (LOCAL_ALIGNMENT): Likewise.
        * config/bfin/bfin-protos.h (bfin_local_alignment): Likewise.
        * config/i386/i386.h (LOCAL_ALIGNMENT): Likewise.
        * config/i386/i386-protos.h (ix86_local_alignment): Likewise.
        * config/mips/mips.h (LOCAL_ALIGNMENT): Likewise.
        * config/mmix/mmix.c (mmix_local_alignment): Likewise.
        * config/mmix/mmix.h (LOCAL_ALIGNMENT): Likewise.
        * config/mmix/mmix-protos.h (mmix_local_alignment): Likewise.
        * config/rs6000/rs6000.h (LOCAL_ALIGNMENT): Likewise.
        * config/score/score.h (LOCAL_ALIGNMENT): Likewise.
        * config/sh/sh.h (LOCAL_ALIGNMENT): Likewise.
        * config/sparc/sparc.h (LOCAL_ALIGNMENT): Likewise.
        * config/spu/spu.h (LOCAL_ALIGNMENT): Likewise.

        * config/i386/i386.c (ix86_local_alignment): Handle caller-save
        stack slot in XFmode.

        * config/rs6000/rs6000.h (LOCAL_ALIGNMENT_1): New.
        * config/sh/sh.h (LOCAL_ALIGNMENT_1): Likewise.

        * doc/tm.texi (LOCAL_ALIGNMENT): Add mode.

Modified:
    branches/stack/gcc/ChangeLog.stackalign
    branches/stack/gcc/caller-save.c
    branches/stack/gcc/cfgexpand.c
    branches/stack/gcc/config/bfin/bfin-protos.h
    branches/stack/gcc/config/bfin/bfin.c
    branches/stack/gcc/config/bfin/bfin.h
    branches/stack/gcc/config/i386/i386-protos.h
    branches/stack/gcc/config/i386/i386.c
    branches/stack/gcc/config/i386/i386.h
    branches/stack/gcc/config/mips/mips.h
    branches/stack/gcc/config/mmix/mmix-protos.h
    branches/stack/gcc/config/mmix/mmix.c
    branches/stack/gcc/config/mmix/mmix.h
    branches/stack/gcc/config/rs6000/rs6000.h
    branches/stack/gcc/config/score/score.h
    branches/stack/gcc/config/sh/sh.h
    branches/stack/gcc/config/sparc/sparc.h
    branches/stack/gcc/config/spu/spu.h
    branches/stack/gcc/defaults.h
    branches/stack/gcc/doc/tm.texi
    branches/stack/gcc/function.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36253