Re: [tree-ssa] having problems recently

[Eyal Lebedinsky <eyal at eyal dot emu dot id dot au>]

Andrew Pinski wrote:
> 
> >
> > This is a multi-part message in MIME format.
> > --------------EE2795D6169FC19FAC0BD7AE
> > Content-Type: text/plain; charset=us-ascii
> > Content-Transfer-Encoding: 7bit
> >
> > As of the last week I am having problems. My main use if with mudflap,
> > where I started getting programs returning wrong results, and running
> > very slowly. I then rebuilt without mudflap (-O0 -g) and observed the
> > same problems. So maybe this is not a mudflap problem at all (I saw
> > no mudflap checkings for a while).
> >
> > BTW, I am building off cvs.
> I would file a bug for this one so we can track it

OK, sorry for the delay, reducing a million lines to the one bad
line took time. Here is a test program. I will now go learn how to
log a bug report...

BTW, the very long run-time was a result of the bad result (bad keys
generated in the database) and not a separate problem.


A good run
==========
eyal@e7:~$ sh ~/zz21.sh
Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs
gcc version 2.95.4 20011002 (Debian prerelease)
 /usr/lib/gcc-lib/i386-linux/2.95.4/cpp0 -lang-c -v -D__GNUC__=2
-D__GNUC_MINOR__=95 -D__ELF__ -Dunix -D__i386__ -Dlinux -D__ELF__
-D__unix__ -D__i386__ -D__linux__ -D__unix -D__linux -Asystem(posix) -g
-Wall -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__
/home/eyal/zz.c /tmp/ccFHzraM.i
GNU CPP version 2.95.4 20011002 (Debian prerelease) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/2.95.4/include
 /usr/include
End of search list.
The following default directories have been omitted from the search
path:
 /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3
 /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../i386-linux/include
End of omitted list.
 /usr/lib/gcc-lib/i386-linux/2.95.4/cc1 /tmp/ccFHzraM.i -quiet -dumpbase
zz.c -g -O0 -Wall -version -o /tmp/ccSVhF8s.s
GNU C version 2.95.4 20011002 (Debian prerelease) (i386-linux) compiled
by GNU C version 2.95.4 20011002 (Debian prerelease).
 as -V -Qy -o /tmp/ccT9u9Vb.o /tmp/ccSVhF8s.s
GNU assembler version 2.12.90.0.1 (i386-linux) using BFD version
2.12.90.0.1 20020307 Debian/GNU Linux
 /usr/lib/gcc-lib/i386-linux/2.95.4/collect2 -m elf_i386 -dynamic-linker
/lib/ld-linux.so.2 -o /home/eyal/zz /usr/lib/crt1.o /usr/lib/crti.o
/usr/lib/gcc-lib/i386-linux/2.95.4/crtbegin.o
-L/usr/lib/gcc-lib/i386-linux/2.95.4 /tmp/ccT9u9Vb.o -lgcc -lc -lgcc
/usr/lib/gcc-lib/i386-linux/2.95.4/crtend.o /usr/lib/crtn.o
'I'
if=1

A bad run
=========
eyal@e7:~$ sh ~/zz21.sh
Reading specs from
/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/specs
Configured with: ../gcc/configure --prefix=/usr/local/gcc-mudflap
--enable-languages=c
Thread model: posix
gcc version 3.5-tree-ssa 20030829 (merged 20030817)

/data2/usr/local/gcc-mudflap-20030829-203101/bin/../libexec/gcc/i686-pc-linux-gnu/3.5-tree-ssa/cc1
-quiet -v -iprefix
/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/
/home/eyal/zz.c -quiet -dumpbase zz.c -mtune=pentiumpro -auxbase zz -g
-O0 -Wall -version -o /tmp/cc1uYL6H.s
ignoring nonexistent directory
"/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/../../../../i686-pc-linux-gnu/include"
ignoring duplicate directory
"/usr/local/gcc-mudflap/lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/include"
ignoring nonexistent directory
"/usr/local/gcc-mudflap/lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/../../../../i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:

/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/include
 /usr/local/include
 /usr/local/gcc-mudflap/include
 /usr/include
End of search list.
GNU C version 3.5-tree-ssa 20030829 (merged 20030817)
(i686-pc-linux-gnu)
        compiled by GNU C version 3.5-tree-ssa 20030829 (merged
20030817).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64574
 as -V -Qy -o /tmp/ccKFH6io.o /tmp/cc1uYL6H.s
GNU assembler version 2.12.90.0.1 (i386-linux) using BFD version
2.12.90.0.1 20020307 Debian/GNU Linux

/data2/usr/local/gcc-mudflap-20030829-203101/bin/../libexec/gcc/i686-pc-linux-gnu/3.5-tree-ssa/collect2
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o
/home/eyal/zz /usr/lib/crt1.o /usr/lib/crti.o
/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/crtbegin.o
-L/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa
-L/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc
-L/usr/local/gcc-mudflap/lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa
-L/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/../../..
-L/usr/local/gcc-mudflap/lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/../../..
/tmp/ccKFH6io.o -lgcc -lgcc_eh -lc -lgcc -lgcc_eh
/data2/usr/local/gcc-mudflap-20030829-203101/bin/../lib/gcc/i686-pc-linux-gnu/3.5-tree-ssa/crtend.o
/usr/lib/crtn.o
'I'
if=0

--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>