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* [gcc r11-9050] Fix ICE with stack checking emulation at -O2
@ 2021-10-01 8:59 Eric Botcazou
0 siblings, 0 replies; only message in thread
From: Eric Botcazou @ 2021-10-01 8:59 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:3aaa884141f832b9a678d44a80e2ececfc9fc090
commit r11-9050-g3aaa884141f832b9a678d44a80e2ececfc9fc090
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Fri Oct 1 10:56:45 2021 +0200
Fix ICE with stack checking emulation at -O2
On bare-metal platforms, the Ada compiler emulates stack checking (it is
required by the language and tested by ACATS) in the runtime via the
stack_check_libfunc hook of the RTL middle-end. Calls to the function
are generated as libcalls but they now require a proper function type
at -O2 or above.
gcc/
* explow.c: Include langhooks.h.
(set_stack_check_libfunc): Build a proper function type.
Diff:
---
gcc/explow.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/gcc/explow.c b/gcc/explow.c
index b6da277f689..a35423f5d16 100644
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -34,6 +34,7 @@ along with GCC; see the file COPYING3. If not see
#include "recog.h"
#include "diagnostic-core.h"
#include "stor-layout.h"
+#include "langhooks.h"
#include "except.h"
#include "dojump.h"
#include "explow.h"
@@ -1641,8 +1642,14 @@ set_stack_check_libfunc (const char *libfunc_name)
{
gcc_assert (stack_check_libfunc == NULL_RTX);
stack_check_libfunc = gen_rtx_SYMBOL_REF (Pmode, libfunc_name);
+ tree ptype
+ = Pmode == ptr_mode
+ ? ptr_type_node
+ : lang_hooks.types.type_for_mode (Pmode, 1);
+ tree ftype
+ = build_function_type_list (void_type_node, ptype, NULL_TREE);
tree decl = build_decl (UNKNOWN_LOCATION, FUNCTION_DECL,
- get_identifier (libfunc_name), void_type_node);
+ get_identifier (libfunc_name), ftype);
DECL_EXTERNAL (decl) = 1;
SET_SYMBOL_REF_DECL (stack_check_libfunc, decl);
}
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2021-10-01 8:59 [gcc r11-9050] Fix ICE with stack checking emulation at -O2 Eric Botcazou
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