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Subject: [Bug rtl-optimization/40838] gcc shouldn't assume that the stack is aligned
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------- Comment #64 from hjl at gcc dot gnu dot org  2009-10-30 15:45 -------
Subject: Bug 40838

Author: hjl
Date: Fri Oct 30 15:45:23 2009
New Revision: 153757

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153757
Log:
gcc/

2009-10-30  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline:
        2009-10-30  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/40838
        * cfgexpand.c (expand_stack_alignment): Call update_stack_boundary
        first.  Move assert on stack_alignment_estimated just before
        setting stack_realign_needed.
        (gimple_expand_cfg): Initialize stack_alignment_estimated to 0.
        Don't call update_stack_boundary.

        * config/i386/i386.c (ix86_minimum_incoming_stack_boundary): New.
        (verride_options): Don't check ix86_force_align_arg_pointer here.
        (ix86_function_ok_for_sibcall): Use it.
        (ix86_update_stack_boundary): Likewise.

        * config/i386/i386.h (STACK_REALIGN_DEFAULT): Update comments.

gcc/testsuite/

2009-10-30  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline:
        2009-10-30  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/40838
        * gcc.target/i386/incoming-6.c: New.
        * gcc.target/i386/incoming-7.c: Likewise.
        * gcc.target/i386/incoming-8.c: Likewise.
        * gcc.target/i386/incoming-9.c: Likewise.
        * gcc.target/i386/incoming-10.c: Likewise.
        * gcc.target/i386/incoming-11.c: Likewise.
        * gcc.target/i386/incoming-12.c: Likewise.
        * gcc.target/i386/incoming-13.c: Likewise.
        * gcc.target/i386/incoming-14.c: Likewise.
        * gcc.target/i386/incoming-15.c: Likewise.
        * gcc.target/i386/pr37843-4.c: Likewise.

Added:
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-10.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-11.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-12.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-13.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-14.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-15.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-6.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-7.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-8.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/incoming-9.c
    branches/ix86/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/pr37843-4.c
Modified:
    branches/ix86/gcc-4_4-branch/gcc/ChangeLog.ix86
    branches/ix86/gcc-4_4-branch/gcc/cfgexpand.c
    branches/ix86/gcc-4_4-branch/gcc/config/i386/i386.c
    branches/ix86/gcc-4_4-branch/gcc/config/i386/i386.h
    branches/ix86/gcc-4_4-branch/gcc/testsuite/ChangeLog.ix86


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838