[avr-gcc-list] AVR bug fix status

[Andrew Hutchinson]

Here is status of the bugs I have looked at.

Bug status needs updating to status in Bugzilla

For example, confirm and update known to work/known to fail information. I cannot do this.

Some of the bugs are serious and generally I would advise against using 4.3 - especially with long operands.

Andy



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 [avr] gcc is pushing too many registers   

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32871

Patch created and submitted  with Anatoly since 3/2/2008
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Various BASE_POINTER spill failure ICE  bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19636
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31786
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24894
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31644

Patch created and submitted  with Anatoly since 1/16/2008
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ICE in extract_insn, at recog.c:1990 AVR Tiny Stack

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34412

fixed and committed
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Incomplete check for  pm() annotation/call through function pointer goes to wrong address

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27192
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35013

Patched posted 2/16/2008
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The following GCC bugs are not due to AVR backend - but cause problems!


[Bug middle-end/35519] COMBINE repeating same matches and can SEG fault]
gcc.c-torture/execute/pr27364.c fails with -O1, -O2 and -Os

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34916
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35519

Combine bug posted with patch 3/9/2008
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fwprop only propagates one operand
missed-optimization transforming a byte array to unsigned long
(and perhaps many others)

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35542
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27663

Bug reported 3/11/2008 with suggested patch

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[avr] 4.3.0: size of small function increases from 2 to 29 words

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35507

Outline solution posted 3/9/2008 - needs patch.