egcs/gcc ChangeLog config/avr/avr.c config/avr ...

[denisc at gcc dot gnu dot org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	denisc@gcc.gnu.org	2000-11-14 11:05:42

Modified files:
	gcc            : ChangeLog 
	gcc/config/avr : avr.c avr.h avr.md libgcc.S 

Log message:
	* config/avr/avr.c (avr_case_values_threshold): New.
	(avr_override_options): Set it depending on options, make it large
	when not optimizing to work around "unable to generate reloads".
	
	* config/avr/avr.h (TARGET_SWITCHES): Add -mno-tablejump option.
	(EXTRA_SECTION_FUNCTIONS): Make the .progmem.gcc_sw_table section
	executable if not AVR_MEGA.  Make sure jump tables are word-aligned.
	(JUMP_TABLES_IN_TEXT_SECTION): Define as 0, not 1.
	(ASM_OUTPUT_ADDR_VEC_ELT): Optimize, use "rjmp" if not AVR_MEGA.
	(avr_case_values_threshold): Declare as extern int.
	(CASE_VALUES_THRESHOLD): Define as avr_case_values_threshold.
	
	* config/avr/avr.md (tablejump): Removed.
	(*tablejump_rjmp): New for jump tables made from "rjmp" instructions.
	(*tablejump_lib, *tablejump_enh, *tablejump): Change to expect the
	index in the table, not multiplied by 2.
	(casesi): Change to match the above insns.  Always enable.
	
	* config/avr/libgcc.S (__tablejump__): Rename to __tablejump2__.
	Change to expect the word address of the table, multiply it by 2
	here and not in the caller.  Change "adiw" to faster "inc".

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.8277&r2=1.8278
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/avr/avr.c.diff?cvsroot=gcc&r1=1.28&r2=1.29
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/avr/avr.h.diff?cvsroot=gcc&r1=1.14&r2=1.15
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/avr/avr.md.diff?cvsroot=gcc&r1=1.18&r2=1.19
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/avr/libgcc.S.diff?cvsroot=gcc&r1=1.8&r2=1.9