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tm.texi (STACK_CHECK_PROBE_LOAD): Delete. 

* doc/tm.texi (STACK_CHECK_PROBE_LOAD): Delete.
	* expr.h (STACK_CHECK_PROBE_LOAD): Likewise.
	* explow.c (emit_stack_probe): Do not test STACK_CHECK_PROBE_LOAD.
	* system.h (STACK_CHECK_PROBE_LOAD): Poison.

From-SVN: r155199
This commit is contained in:
Eric Botcazou 2009-12-13 23:00:53 +00:00 committed by Eric Botcazou
parent 840a82bab8
commit 82b68940a3
5 changed files with 10 additions and 17 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2009-12-13 Eric Botcazou <ebotcazou@adacore.com>
* doc/tm.texi (STACK_CHECK_PROBE_LOAD): Delete.
* expr.h (STACK_CHECK_PROBE_LOAD): Likewise.
* explow.c (emit_stack_probe): Do not test STACK_CHECK_PROBE_LOAD.
* system.h (STACK_CHECK_PROBE_LOAD): Poison.
2009-12-13 Michael Matz <matz@suse.de>
PR tree-optimization/42027

6
gcc/doc/tm.texi
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@ -3564,12 +3564,6 @@ the ``guard pages'' at the end of a stack area. The default value
of 12 (4096-byte interval) is suitable for most systems.
@end defmac
@defmac STACK_CHECK_PROBE_LOAD
An integer which is nonzero if GCC should perform the stack probe
as a load instruction and zero if GCC should use a store instruction.
The default is zero, which is the most efficient choice on most systems.
@end defmac
@defmac STACK_CHECK_MOVING_SP
An integer which is nonzero if GCC should move the stack pointer page by page
when doing probes. This can be necessary on systems where the stack pointer

3
gcc/explow.c
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@ -1366,9 +1366,6 @@ emit_stack_probe (rtx address)
emit_insn (gen_probe_stack (memref));
else
#endif
if (STACK_CHECK_PROBE_LOAD)
emit_move_insn (gen_reg_rtx (word_mode), memref);
else
emit_move_insn (memref, const0_rtx);
}

5
gcc/expr.h
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@ -223,11 +223,6 @@ do { \
#define STACK_CHECK_PROBE_INTERVAL_EXP 12
#endif
/* The default is to do a store into the stack. */
#ifndef STACK_CHECK_PROBE_LOAD
#define STACK_CHECK_PROBE_LOAD 0
#endif
/* The default is not to move the stack pointer. */
#ifndef STACK_CHECK_MOVING_SP
#define STACK_CHECK_MOVING_SP 0

6
gcc/system.h
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@ -756,12 +756,12 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
PREDICATE_CODES SPECIAL_MODE_PREDICATES \
PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
ASM_OUTPUT_SHARED_LOCAL UNALIGNED_WORD_ASM_OP \
ASM_MAKE_LABEL_LINKONCE STACK_CHECK_PROBE_INTERVAL
ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD
/* Hooks that are no longer used. */
#pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \