[Bug middle-end/65958] -fstack-check breaks alloca on architectures using generic stack checking

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65958

--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Dec  4 18:25:54 2015
New Revision: 231295

URL: https://gcc.gnu.org/viewcvs?rev=231295&root=gcc&view=rev
Log:
        PR middle-end/65958
        * config/arm/unspecs.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
        (unspecv): Add VUNSPEC_PROBE_STACK_RANGE.
        * config/arm/arm.md (probe_stack_range): Adjust.
        * config/aarch64/aarch64.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
        (unspecv): Add UNSPECV_PROBE_STACK_RANGE.
        (probe_stack_range_<PTR:mode>): Adjust.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64.md
    trunk/gcc/config/arm/arm.md
    trunk/gcc/config/arm/unspecs.md