gcc/gcc ChangeLog Makefile.in flags.h flow.c h ...

[amylaar at gcc dot gnu dot org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	amylaar@gcc.gnu.org	2003-06-18 19:43:56

Modified files:
	gcc            : ChangeLog Makefile.in flags.h flow.c hooks.c 
	                 hooks.h recog.c rtl.h target-def.h target.h 
	                 toplev.c 
	gcc/config/ia64: ia64.c 
	gcc/config/rs6000: rs6000.c 
	gcc/config/sh  : sh.c sh.h 
	gcc/config/sparc: sparc.c 
	gcc/doc        : invoke.texi tm.texi 
Added files:
	gcc            : bt-load.c 

Log message:
	2003-06-18  Stephen Clarke <stephen.clarke@superh.com>
	J"orn Rennecke <joern.rennecke@superh.com>
	
	* bt-load.c: New file.
	* Makefile.in (OBJS): Include bt-load.o
	(bt-load.o): Add dependencies.
	* flags.h (flag_branch_target_load_optimize): Declare.
	(flag_branch_target_load_optimize2): Likewise.
	* hooks.c (hook_reg_class_void_no_regs): New function.
	(hook_bool_bool_false): Likewise.
	* hooks.h (hook_reg_class_void_no_regs, hook_bool_bool_false): Declare.
	* rtl.h (branch_target_load_optimize): Declare.
	* target-def.h (TARGET_BRANCH_TARGET_REGISTER_CLASS): Define.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	(TARGET_INITIALIZER): Include these.
	* target.h (struct gcc_target): Add branch_target_register_class
	and branch_target_register_callee_saved members.
	* toplev.c (enum dump_file_index): Add DFI_branch_target_load
	(dump_file) Add "tars" entry.
	(flag_branch_target_load_optimize): New variable.
	(flag_branch_target_load_optimize2): Likewise.
	(lang_independent_options): Add entries for new options.
	(rest_of_compilation): Call branch_target_load_optimize.
	* doc/tm.texi (TARGET_BRANCH_TARGET_REGISTER_CLASS): Document.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	* doc/invoke.texi: Document -fbranch-target-load-optimize and
	-fbranch-target-load-optimize2.
	* rtl.h (epilogue_completed): Declare.
	* recog.c (epilogue_completed): New variable.
	* toplev.c (rest_of_compilation): Set it.
	* flow.c (mark_regs_live_at_end): Use it.
	* config/ia64/ia64.c (ia64_output_mi_thunk): Set it.
	* config/rs6000/rs6000.c (rs6000_output_mi_thunk): Likewise.
	* config/sh/sh.c (sh_output_mi_thunk): Likewise.
	* config/sparc/sparc.c (sparc_output_mi_thunk): Likewise.
	
	* sh.c (shmedia_space_reserved_for_target_registers): New variable.
	(sh_target_reg_class): New function.
	(sh_optimize_target_register_callee_saved): Likwise.
	(shmedia_target_regs_stack_space): Likewise.
	(shmedia_reserve_space_for_target_registers_p): Likewise.
	(shmedia_target_regs_stack_adjust): Likewise.
	(TARGET_BRANCH_TARGET_REGISTER_CLASS): Override.
	(TARGET_BRANCH_TARGET_REGISTER_CALLEE_SAVED): Likewise.
	(calc_live_regs): If flag_branch_target_load_optimize2 and
	TARGET_SAVE_ALL_TARGET_REGS is enabled, and we have space reserved
	for target registers, make sure that we save all target registers.
	(sh_expand_prologue, sh_expand_epilogue): Take target register
	optimizations into account.  Collapse stack adjustments if that
	is beneficial.
	(initial_elimination_offset): Reserve space for target registers
	if necessary.
	* sh.h (SAVE_ALL_TR_BIT, TARGET_SAVE_ALL_TARGET_REGS): Define.
	(OPTIMIZATION_OPTIONS): Enable flag_branch_target_load_optimize.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/bt-load.c.diff?cvsroot=gcc&r1=NONE&r2=2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.58&r2=2.59
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/Makefile.in.diff?cvsroot=gcc&r1=1.1084&r2=1.1085
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flags.h.diff?cvsroot=gcc&r1=1.111&r2=1.112
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&r1=1.552&r2=1.553
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/hooks.c.diff?cvsroot=gcc&r1=1.15&r2=1.16
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/hooks.h.diff?cvsroot=gcc&r1=1.15&r2=1.16
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/recog.c.diff?cvsroot=gcc&r1=1.180&r2=1.181
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtl.h.diff?cvsroot=gcc&r1=1.416&r2=1.417
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/target-def.h.diff?cvsroot=gcc&r1=1.50&r2=1.51
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/target.h.diff?cvsroot=gcc&r1=1.57&r2=1.58
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.c.diff?cvsroot=gcc&r1=1.776&r2=1.777
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/ia64/ia64.c.diff?cvsroot=gcc&r1=1.230&r2=1.231
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&r1=1.494&r2=1.495
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh.c.diff?cvsroot=gcc&r1=1.221&r2=1.222
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh.h.diff?cvsroot=gcc&r1=1.211&r2=1.212
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sparc/sparc.c.diff?cvsroot=gcc&r1=1.248&r2=1.249
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/invoke.texi.diff?cvsroot=gcc&r1=1.293&r2=1.294
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/tm.texi.diff?cvsroot=gcc&r1=1.235&r2=1.236