https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
Eric Gallager changed:
What|Removed |Added
Status|WAITING |RESOLVED
CC|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
Eric Gallager changed:
What|Removed |Added
Status|UNCONFIRMED |WAITING
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
Eric Gallager changed:
What|Removed |Added
CC||egallager at gcc dot gnu.org
--- Comment
--- Comment #8 from dj at redhat dot com 2007-10-31 22:27 ---
Subject: Re: iv folding fails with pointer iterations
Right, that's why I was trying to use 32 bit math instead, which led
to the original iv bug.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
--- Comment #7 from rguenth at gcc dot gnu dot org 2007-10-31 22:15 ---
look at set_sizetype and its cousins. Though I'd think that not be able to
do arithmetic in that precision might be a problem in the end.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
--- Comment #6 from dj at redhat dot com 2007-10-31 18:36 ---
Subject: Re: iv folding fails with pointer iterations
Hmmm... pointers are PSImode (24 bits) with --mcpu=m32c. How do you
make sizetype that size? The chip doesn't have enough 24 bit math
opcodes to do all the things gcc
--- Comment #5 from rguenth at gcc dot gnu dot org 2007-10-31 18:20 ---
I think the middle-end internal sizetype needs to be at least the same size
as pointer types, otherwise you _will_ definitely see wrong-code in some
circumstances.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=
--- Comment #4 from dj at redhat dot com 2007-10-31 18:03 ---
Subject: Re: iv folding fails with pointer iterations
Oops, sorry, I have a local patch. Apparently I'm trying to support
pointer math the same size as pointers (pointers are 24 bits) as an
option for the future, which low
--- Comment #3 from rakdver at gcc dot gnu dot org 2007-10-31 17:39 ---
It does not reproduce for me on i686-linux, either. Do you pass any special
flags to configure?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
--- Comment #2 from dj at redhat dot com 2007-10-30 04:30 ---
Subject: Re: iv folding fails with pointer iterations
Yup. I did a source update, rebuilt the natives, and tried to build...
m32c-elf-gcc -B/greed/dj/m32c/newlib/m32c-elf/m32c-elf/m32cm/newlib/ -isystem
/greed/dj/m32c/new
--- Comment #1 from rakdver at gcc dot gnu dot org 2007-10-30 03:32 ---
I cannot reproduce it (using ./configure --enable-languages=c --target=m32c-elf
on amd64-linux). Does it still fail for you?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33915
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