* toplev.c (flag_caller_saves): Always initialize with 0.
* doc/tm.texi (DEFAULT_CALLER_SAVES): Remove.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@74655
138bc75d-0d04-0410-961f-
82ee72b054a4
2003-12-15 Kazu Hirata <kazu@cs.umass.edu>
+ * system.h (DEFAULT_CALLER_SAVES): Poison.
+ * toplev.c (flag_caller_saves): Always initialize with 0.
+ * doc/tm.texi (DEFAULT_CALLER_SAVES): Remove.
+
+2003-12-15 Kazu Hirata <kazu@cs.umass.edu>
+
* flow.c (EXIT_IGNORE_STACK): Move to ...
* defaults.h (EXIT_IGNORE_STACK): ... here.
* dojump.c (clear_pending_stack_adjust): Don't use #ifdef
makes it possible to use call-clobbered registers to hold variables that
must live across calls.
-@defmac DEFAULT_CALLER_SAVES
-Define this macro if function calls on the target machine do not preserve
-any registers; in other words, if @code{CALL_USED_REGISTERS} has 1
-for all registers. When defined, this macro enables @option{-fcaller-saves}
-by default for all optimization levels. It has no effect for optimization
-levels 2 and higher, where @option{-fcaller-saves} is the default.
-@end defmac
-
@defmac CALLER_SAVE_PROFITABLE (@var{refs}, @var{calls})
A C expression to determine whether it is worthwhile to consider placing
a pseudo-register in a call-clobbered hard register and saving and
DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
- LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL
+ LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES
/* Hooks that are no longer used. */
#pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
be saved across function calls, if that produces overall better code.
Optional now, so people can test it. */
-#ifdef DEFAULT_CALLER_SAVES
-int flag_caller_saves = 1;
-#else
int flag_caller_saves = 0;
-#endif
/* Nonzero if structures and unions should be returned in memory.