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defaults.h (STACK_OLD_CHECK_PROTECT): Adjust for -fno-exceptions. 

* defaults.h (STACK_OLD_CHECK_PROTECT): Adjust for -fno-exceptions.
	Bump to 4KB for SJLJ exceptions.
	(STACK_CHECK_PROTECT): Likewise.  Bump to 8KB for SJLJ exceptions.
	* doc/tm.texi.in (STACK_CHECK_PROTECT): Adjust.
	* doc/tm.texi: Regenerate.

From-SVN: r227799
This commit is contained in:
Eric Botcazou 2015-09-15 16:25:59 +00:00 committed by Eric Botcazou
parent 78dc36f80a
commit c55721c0df
4 changed files with 23 additions and 11 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2015-09-15 Eric Botcazou <ebotcazou@adacore.com>
* defaults.h (STACK_OLD_CHECK_PROTECT): Adjust for -fno-exceptions.
Bump to 4KB for SJLJ exceptions.
(STACK_CHECK_PROTECT): Likewise. Bump to 8KB for SJLJ exceptions.
* doc/tm.texi.in (STACK_CHECK_PROTECT): Adjust.
* doc/tm.texi: Regenerate.
2015-09-15 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/arm.c (arm_gen_constant): Use HOST_WIDE_INT_M1U instead

14
gcc/defaults.h
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@ -1406,9 +1406,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
#else
#define STACK_OLD_CHECK_PROTECT \
(targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
(!global_options.x_flag_exceptions \
? 75 * UNITS_PER_WORD \
: 8 * 1024)
: targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
? 4 * 1024 \
: 8 * 1024)
#endif
/* Minimum amount of stack required to recover from an anticipated stack
@ -1416,9 +1418,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
of stack required to propagate an exception. */
#ifndef STACK_CHECK_PROTECT
#define STACK_CHECK_PROTECT \
(targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
? 75 * UNITS_PER_WORD \
: 12 * 1024)
(!global_options.x_flag_exceptions \
? 4 * 1024 \
: targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
? 8 * 1024 \
: 12 * 1024)
#endif
/* Make the maximum frame size be the largest we can and still only need

6
gcc/doc/tm.texi
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@ -3360,10 +3360,10 @@ default value of this macro is zero.
@defmac STACK_CHECK_PROTECT
The number of bytes of stack needed to recover from a stack overflow, for
languages where such a recovery is supported. The default value of 75 words
languages where such a recovery is supported. The default value of 4KB/8KB
with the @code{setjmp}/@code{longjmp}-based exception handling mechanism and
8192 bytes with other exception handling mechanisms should be adequate for
most machines.
8KB/12KB with other exception handling mechanisms should be adequate for most
architectures and operating systems.
@end defmac
The following macros are relevant only if neither STACK_CHECK_BUILTIN

6
gcc/doc/tm.texi.in
View File

@ -2946,10 +2946,10 @@ default value of this macro is zero.
@defmac STACK_CHECK_PROTECT
The number of bytes of stack needed to recover from a stack overflow, for
languages where such a recovery is supported. The default value of 75 words
languages where such a recovery is supported. The default value of 4KB/8KB
with the @code{setjmp}/@code{longjmp}-based exception handling mechanism and
8192 bytes with other exception handling mechanisms should be adequate for
most machines.
8KB/12KB with other exception handling mechanisms should be adequate for most
architectures and operating systems.
@end defmac
The following macros are relevant only if neither STACK_CHECK_BUILTIN