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[Bug middle-end/65958] -fstack-check breaks alloca on architectures using generic stack checking
- From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 04 Dec 2015 11:52:35 +0000
- Subject: [Bug middle-end/65958] -fstack-check breaks alloca on architectures using generic stack checking
- Auto-submitted: auto-generated
- References: <bug-65958-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65958
--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Dec 4 11:52:04 2015
New Revision: 231259
URL: https://gcc.gnu.org/viewcvs?rev=231259&root=gcc&view=rev
Log:
PR middle-end/65958
* config/aarch64/aarch64-protos.h (aarch64_output_probe_stack-range):
Declare.
* config/aarch64/aarch64.md: Declare UNSPECV_BLOCKAGE and
UNSPEC_PROBE_STACK_RANGE.
(blockage): New instruction.
(probe_stack_range_<PTR:mode>): Likewise.
* config/aarch64/aarch64.c (aarch64_emit_probe_stack_range): New
function.
(aarch64_output_probe_stack_range): Likewise.
(aarch64_expand_prologue): Invoke aarch64_emit_probe_stack_range if
static builtin stack checking is enabled.
* config/aarch64/aarch64-linux.h (STACK_CHECK_STATIC_BUILTIN):
Define to 1.
Added:
trunk/gcc/testsuite/gcc.target/aarch64/stack-checking.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64-linux.h
trunk/gcc/config/aarch64/aarch64-protos.h
trunk/gcc/config/aarch64/aarch64.c
trunk/gcc/config/aarch64/aarch64.md
trunk/gcc/testsuite/ChangeLog