[Bug middle-end/45234] [4.4/4.5/4.6 Regression] ICE in expand_call, at calls.c:2845 when passing aligned function argument from unaligned stack after alloca

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45234

--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-09-24 14:37:06 UTC ---
Author: jakub
Date: Fri Sep 24 14:37:02 2010
New Revision: 164593

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164593
Log:
    PR middle-end/45234
    * rtl.h (enum global_rtl_index): Add
    GR_VIRTUAL_PREFERRED_STACK_BOUNDARY.
    (LAST_VIRTUAL_POINTER_REGISTER): Define.
    (virtual_preferred_stack_boundary_rtx,
    VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM): Define.
    (LAST_VIRTUAL_REGISTER): Increase by one.
    (REGNO_PTR_FRAME_P): Use LAST_VIRTUAL_POINTER_REGISTER
    instead of LAST_VIRTUAL_REGISTER.
    * function.c (instantiate_new_reg): Handle
    virtual_preferred_stack_boundary_rtx.
    * emit-rtl.c (init_virtual_regs): Handle
    VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM.
    (init_emit_regs): Initialize virtual_preferred_stack_boundary_rtx.
    * explow.c (round_push): If crtl->preferred_stack_boundary
    is smaller than MAX_SUPPORTED_STACK_ALIGNMENT, use
    virtual_preferred_stack_boundary_rtx alignment instead of
    crtl->preferred_stack_boundary alignment.
    (allocate_dynamic_stack_space): Use CONST_INT_P and REG_P
    macros.  Never decrease crtl->preferred_stack_boundary,
    use crtl->preferred_stack_boundary or MAX_SUPPORTED_STACK_ALIGNMENT
    instead of PREFERRED_STACK_BOUNDARY.  Don't modify
    stack_pointer_delta in dynamic allocation, even when size
    is constant.
    (probe_stack_range, anti_adjust_stack_and_probe): Use CONST_INT_P
    macro.
    * print-rtl.c (print_rtx): Handle
    VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM.
    * config/alpha/alpha.h (NONSTRICT_REG_OK_FP_BASE_P): Use
    LAST_VIRTUAL_POINTER_REGISTER instead of LAST_VIRTUAL_REGISTER.
    * config/frv/frv.c (frv_emit_movsi): Likewise.
    * config/arm/arm.c (thumb1_legitimate_address_p): Likewise.
    * config/rs6000/rs6000.c (virtual_stack_registers_memory_p):
    Likewise.

    * gcc.dg/torture/stackalign/alloca-6.c: New test.
    * gcc.target/i386/pr45234.c: New test.

    Revert:
    2010-09-17  H.J. Lu  <hongjiu.lu@intel.com>

    PR middle-end/45234
    * calls.c (expand_call): Make sure that all variable sized
    adjustments are multiple of preferred stack boundary after
    stack alignment.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/stackalign/alloca-6.c
    trunk/gcc/testsuite/gcc.target/i386/pr45234.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/calls.c
    trunk/gcc/config/alpha/alpha.h
    trunk/gcc/config/arm/arm.c
    trunk/gcc/config/frv/frv.c
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/emit-rtl.c
    trunk/gcc/explow.c
    trunk/gcc/function.c
    trunk/gcc/print-rtl.c
    trunk/gcc/rtl.h
    trunk/gcc/testsuite/ChangeLog

-- 
Configure bugmail: http://gcc.gnu.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.