[Bug target/19059] New: Atmel AVR Tiny13 and Tiny2313 support corrupted

[Bug target/19059] New: Atmel AVR Tiny13 and Tiny2313 support corrupted

[frouleau at naotek dot com]

AtTiny13 and AtTiny2313 are considered as avr4 architecture. But they do not
support all the instructions of avr4.
For example the "mul" instruction does not exist. See bellow a test case for mul.

avr-gcc -mmcu=attiny2313 test_mul.c

int main(void) {
	uint8_t a, b;
	uint16_t res;
	res = a * b;
}

-- 
           Summary: Atmel AVR Tiny13 and Tiny2313 support corrupted
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P1
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: frouleau at naotek dot com
                CC: ericw at evcohs dot com,gcc-bugs at gcc dot gnu dot org
 GCC build triplet: Any
  GCC host triplet: Any
GCC target triplet: avr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19059

[Bug target/19059] Atmel AVR Tiny13 and Tiny2313 support corrupted

[frouleau at naotek dot com]

------- Additional Comments From frouleau at naotek dot com  2004-12-23 08:45 -------
Created an attachment (id=7810)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7810&action=view)
workarround to fix the bug

This patch moves attiny13 and attiny2313 from arch4 to arch2. Thus no bugs
occure anymore but the generated code is not optimized (lost movw, spm and some
form of lpm asm instructions).
A new architecture should be created to fully solve the problem.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19059

[Bug target/19059] Atmel AVR Tiny13 and Tiny2313 support corrupted

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-12-25 22:20 -------
Subject: Bug 19059

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	marekm@gcc.gnu.org	2004-12-25 22:20:05

Modified files:
	gcc            : ChangeLog 
	gcc/config/avr : avr.c avr.h t-avr 

Log message:
	PR target/19059
	* config/avr/avr.c (avr_mcu_types): Move attiny{13,2313} from avr4
	to avr2.
	* config/avr/avr.h (LINK_SPEC): Ditto.
	* config/avr/t-avr (MULTILIB_MATCHES): Ditto.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6954&r2=2.6955
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/avr/avr.c.diff?cvsroot=gcc&r1=1.124&r2=1.125
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/avr/avr.h.diff?cvsroot=gcc&r1=1.109&r2=1.110
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/avr/t-avr.diff?cvsroot=gcc&r1=1.13&r2=1.14



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19059

[Bug target/19059] Atmel AVR Tiny13 and Tiny2313 support corrupted

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-25 23:11 -------
Fixed but who ever applied this patch, please note we are in regression only mode and that this patch 
should not have been applied unless you got special approval from Mark M.  Also note the patch which 
fixed has not been sent to gcc-patches@ yet but really should be as normal produces for gcc.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19059

[Bug target/19059] Atmel AVR Tiny13 and Tiny2313 support corrupted

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19059